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1
Onyelowe, Kennedy C., Michael E. Onyia, Duc Bui Van, Haci Baykara e Hyginus U. Ugwu. "Pozzolanic Reaction in Clayey Soils for Stabilization Purposes: A Classical Overview of Sustainable Transport Geotechnics". Advances in Materials Science and Engineering 2021 (25 marzo 2021): 1–7. http://dx.doi.org/10.1155/2021/6632171.
Testo completoAbstract (sommario):
Problematic soil stabilization processes involve the application of binders to improve the engineering properties of the soil. This is done to change the undesirable properties of these soils to meet basic design standards. However, very little attention has been given to the reactive phase of soil stabilization. This phase is the most important in every stabilization protocol because it embodies the reactions that lead to the bonding of the dispersed particles of clayey soil. Hence, this reactive phase is reviewed. When clayey soils which make up the greatest fraction of expansive soil come in contact with moisture, they experience volume changes due to adsorbed moisture that forms films of double diffused layer on the particles. When this happens, the clayey particles disperse and float, increasing the pore spaces or voids that exist in the soil mass. Stabilizations of these soils are conducted to close the gaps between the dispersed clayey soil particles. This is achieved by mixing additives that will release calcium, aluminum, silicon, etc., in the presence of adsorbed moisture, and a hydration reaction occurs. This is followed by the displacement reaction based on the metallic order in the electrochemical series. This causes a calcination reaction, a process whereby calcium displaces the hydrogen ions of the dipole adsorbed moisture and displaces the sodium ion responsible for the swelling potential of clayey soils. These whole processes lead to a pozzolanic reaction, which finally forms calcium alumina-silica hydrate. This formation is responsible for soil stabilization.
2
Purnama Putra, Paksitya, Diah Ayu Paramiswari, Abdullah Ilham e M. Farid Ma’ruf. "Expansive soil improvement of Glagahagung village, Purwoharjo sub-district, Banyuwangi district, which is chemically stabilized". MATEC Web of Conferences 195 (2018): 03009. http://dx.doi.org/10.1051/matecconf/201819503009.
Testo completoAbstract (sommario):
Expansive soil can be easily found at Purwoharjo, a sub-district of Banyuwangi. Swelling and shrinkage behavior of the soil is usually referred to by the local community as a “moving soil” phenomenon. It causes cracks on a number of buildings which is a major issue in that area. Various methods of expansive soil stabilization are available. This work intends to lay comparisons on stabilizations using wood charcoal powder and salt. The stabilizing materials are mixed with the soils under different proportion. Volume weight, index properties, and dry density are parameters to be investigated during the stabilization process. The results show that salt stabilized expansive soil is better than wood charcoal powder. 15% proportion of salt to soils weight increases the density by about 20%. Meanwhile, the stabilized soil is as a result of change to low plasticity silt (ML) from previously high plasticity soil (CH) of the original one.
3
Babatunde, Quadri Olakunle, e Yong-Hoon Byun. "Soil Stabilization Using Zein Biopolymer". Sustainability 15, n. 3 (21 gennaio 2023): 2075. http://dx.doi.org/10.3390/su15032075.
Testo completoAbstract (sommario):
The characterization and analysis of the cementation properties of novel biopolymer binders in soils are essential for their potential application in geotechnical engineering. This study investigates the cementation effect of a novel zein biopolymer binder on sandy soils. Soil specimens are mixed with various contents of zein biopolymer ranging from 0 to 5%. The mechanical and microscopic characteristics of the treated specimens are evaluated using unconfined compression tests and scanning electron microscopy, respectively, after curing for 3, 7, and 28 days. The results show a consistent increase in compressive strength and elastic modulus of treated soils with increasing curing periods and biopolymer contents. A small amount (1%) of zein biopolymer increases soil strength and elasticity regardless of gradation. Additionally, the bonding force between the soil–zein biopolymer increases linearly with soil uniformity. Therefore, the application of zein biopolymer can be potentially used as a binder for fine- and coarse-grained soils in geotechnical engineering considering its stabilization and sustainability properties.
4
Chougale, Prof V. C. "Utilization of Waste Material in Road Sub Grade for Stabilization of Soil". International Journal for Research in Applied Science and Engineering Technology 11, n. 6 (30 giugno 2023): 782–84. http://dx.doi.org/10.22214/ijraset.2023.53573.
Testo completoAbstract (sommario):
Abstract: Soil stabilization is a quite common process for nearly all the building projects. Broadly, all kinds of soil stabilization may be classified into two groups, i.e. mechanical stabilization and chemical stabilization. In mechanical stabilization, the grading of a soil is modified by mixing it with other sorts of soils of various grades. By doing so, a compacted soil mass may be achieved. On the opposite hand, chemical stabilization is related to the modification of soil properties by the addition of chemically active materials. In soil stabilization, it's important to grasp the material properties involved within the mixture and also the outcome after mixing.
5
Mekonnen, Eshetu, Ameha Kebede, Tekle Tafesse e Mesfin Tafesse. "Application of Microbial Bioenzymes in Soil Stabilization". International Journal of Microbiology 2020 (30 luglio 2020): 1–8. http://dx.doi.org/10.1155/2020/1725482.
Testo completoAbstract (sommario):
Soil stabilization is a mechanical or chemical alteration of one or more soil properties to create an improved soil material possessing the desired engineering properties. The aim of this article was to review bioenzyme-based soil stabilization techniques with an emphasis on bioenzymes production, mechanism of soil stabilization and future challenges, and opportunities of the sector. Soils are stabilized to increase strength and durability or to prevent erosion and dust generation. Cost-effective soil stabilization technology has been a fundamental part of any construction and is very important for economic growth in any country. In some cases, construction has been challenged due to the high cost of soil stabilization processes. Besides, methods of stabilizations using common stabilizing agents are getting costly. Currently, there is a growing interest to identify new and green technology to improve construction techniques and to expand the road network. Therefore, the search for new materials and improved techniques to process the local materials has received an increased focus. For developing countries, bioenzymes are now creating an opportunity to improve soil stability with tremendous effectiveness in the overall process of soil stabilization. In the world, bioenzymes have been used in different projects for several years and are generally proprietary products, often of patented formulation that needs intensive field tests. Currently, the use and production of bioenzymes is becoming the most promising key for the advancement of a country by saving time, energy, and finance. It also reduces environmental pollution due to carbon emission by the conventional stabilizers. Thus, a better understanding of this emerging technology is of utmost importance to exploit any improvement it can offer to soil stability. With little research and practice, it is possible to produce soil stabilizing bioenzymes using local raw materials. Due to this, production of low cost, easily and widely applicable, and environmentally friendly enzymatic formulations from locally available raw materials should be the interest of research and academic institutes of any country.
6
Meghana, V., e Y. Raja Veerendra. "Performance evaluation of expansive clay subgrade stabilized with synthetic rubber". IOP Conference Series: Earth and Environmental Science 982, n. 1 (1 marzo 2022): 012053. http://dx.doi.org/10.1088/1755-1315/982/1/012053.
Testo completoAbstract (sommario):
Abstract In our everyday lives, transport plays an important part. An important necessity for the building of pavements is the existence of a decent subgrade. Soil stabilization is the process of improving the physical qualities of the soil in order to enhance its strength, durability etc. Soil stabilization gives an option to enhancing its strength and capacity to carry load. The many ways utilized to stabilize the soil Subgrade. However, the carbon footprint for most of the chemical stabilizations is enormous, which made researchers to find some sustainable alternatives. Present study focuses on the applicability of styrene butadiene rubber (SBR), a synthetic rubber, which is an easily accessible adhesive that may be used to improve the characteristics of soil. Soils combined with chemical stabilizer (SBR) in varied percentages have been tested for Standard Proctor Test, and California Bearing Ratio Test. As a consequence of the stabilization, the OMC was lowered and MDD of the soil increased. The results were satisfactory till the addition of 12% chemical, which means that SBR can be used as a stabilizer for improving the properties of expansive clay subgrade
7
Yi, Yaolin, Martin Liska, Cise Unluer e Abir Al-Tabbaa. "Carbonating magnesia for soil stabilization". Canadian Geotechnical Journal 50, n. 8 (agosto 2013): 899–905. http://dx.doi.org/10.1139/cgj-2012-0364.
Testo completoAbstract (sommario):
This paper investigates the potential for carbonating reactive magnesia (MgO) to serve as a more sustainable soil stabilization method by providing rapid and significant strength development of the stabilized soil through absorbing substantial quantities of CO2. Gaseous CO2 was forced through laboratory-prepared reactive MgO-treated soil samples in a triaxial cell set-up, and their resulting mechanical and microstructural properties were investigated using unconfined compressive strength, X-ray diffraction, and scanning electron microscopy. The results showed that adequately carbonated MgO-treated soils could, in a few hours, reach a similar strength range to corresponding 28 day Portland cement (PC)-stabilized soils. Hydrated magnesium carbonates, namely nesquehonite and hydromagnesite–dypingite, were the main products of the carbonated MgO in the soil, and were responsible for the significant strength development.
8
Rakh, Avinash. "A Brief Review on Soil Stabilization Techniques". INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, n. 05 (22 maggio 2024): 1–5. http://dx.doi.org/10.55041/ijsrem34435.
Testo completoAbstract (sommario):
Soil stabilization techniques play a crucial role in enhancing the engineering properties of soils, ensuring their suitability for various construction applications. This review paper synthesizes the findings from multiple studies on soil stabilization methods and their effectiveness in improving soil characteristics. A comprehensive comparison of different stabilization techniques, including traditional methods like cement and lime stabilization, as well as modern approaches utilizing materials such as fly ash, coal bottom ash, and ground granulated blast-furnace slag (GGBS), is presented. The review examines the impact of these techniques on soil strength, moisture content, and swelling behavior. Additionally, innovative approaches such as microbial-induced carbonate precipitation and chemical grouting with polymers are explored for their potential in soil stabilization. The paper also discusses the environmental implications and economic feasibility of various stabilization methods. Through a thorough analysis of the literature, this review aims to provide insights into the selection and application of soil stabilization techniques based on specific soil conditions and project requirements. Keywords— Soil stabilization, ground improvement, engineering properties, traditional methods, modern techniques, environmental impact, economic feasibility.
9
Kotwal, Sheetal, e Anoop Sharma. "IMPROVING THE ENGINEERING PROPERTIES OF SOIL USING NYLON FIBRE WITH GROUND GRANULATED BLAST FURNACE SLAG". INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 07, n. 12 (1 dicembre 2023): 1–10. http://dx.doi.org/10.55041/ijsrem27493.
Testo completoAbstract (sommario):
Among the major issues facing the engineering community are the development of economically viable ground improvement techniques and the safe and efficient disposal of industrial pollutants. In this work, an effort has been made to look at the viability of using GGBS with fibers. These hazardous industrial waste materials are used to stabilize soil because they can be used in large quantities for geotechnical projects including building embankments, earth dams, and paving for roads and airports. The process of increasing the soil's engineering qualities and making it more stable is known as soil stabilization. When the construction- ready soil is unfit for the intended use, it is necessary. Stabilization, in its broadest definition, encompasses preconsolidation, drainage, and many other similar processes. However, the term "stabilization" is typically used to refer to a procedure where the soil material is changed in order to improve its qualities. For the purpose of stabilizing a natural soil, a cementing substance or chemical is added. In earth structures, soil stabilization is utilized to increase shear strength and decrease permeability and compressibility of the soil mass. To strengthen the foundation soils' bearing capability, soil stabilization is necessary. Stabilization is mostly used to enhance the natural soils for the building of roads and airports. The grading of soils and aggregates used to build the bases and sub bases of highways and airports are governed by the principles of soil stabilization. Key Words: Compaction test, CBR, UCS, Nylon Fibre, GGBS
10
Imafidon, D., O. R. Ogirigbo e J. O. Ehiorobo. "Improvement of deltaic lateritic soil using river sand and cement for use as pavement construction material". Nigerian Journal of Technology 40, n. 2 (18 ottobre 2021): 168–76. http://dx.doi.org/10.4314/njt.v40i2.1.
Testo completoAbstract (sommario):
This study examined the effect of mechanical and chemical improvement on deltaic lateritic soils in Warri East in Delta State, Nigeria. Mechanical stabilization was carried out by adding river sand to the natural soil in various proportions, while chemical stabilization was carried out using cement and a mixture of cement and sand. Compaction and CBR tests were conducted on the natural soil before and after stabilization. From the results obtained, it was seen that the mechanical stabilization method improved the strength properties of the soil making it suitable for use as subbase materials, though not as much as the chemical stabilization method or the mixed method of stabilization. It was concluded that using a combination of cement and sand as a stabilizing agent for deltaic lateritic soils can lead to significant reduction in the amount of cement required for soil stabilization thus saving costs.
11
Sahoo, Swarnaprava, SK Jaish Quadri, Bishwajit Kar, Chandan Mallik e Surajit Pattnaik. "Application of Terrazyme (Bio-Enzyme) as a Soil Stabilizer". International Journal for Research in Applied Science and Engineering Technology 11, n. 6 (30 giugno 2023): 4177–83. http://dx.doi.org/10.22214/ijraset.2023.54410.
Testo completoAbstract (sommario):
Abstract: Soil stabilization is a mechanical or chemical alteration of one or more soil properties to create an improved soil material possessing the desired engineering properties. 'e aim of this article was to review bio enzyme-based soil stabilization techniques with an emphasis onBio-enzymes production, mechanism of soil stabilization and future challenges, and opportunities of the sector. Soils are stabilized to increase strength and durability or to prevent erosion and dust generation. Cost-effective soil stabilization technology has been a fundamental part of any construction and is very important for economic growth in any country. In some cases, construction has been challenged due to the high cost of soil stabilization processes. Besides, methods of stabilizations using common stabilizing agents are getting costly. Currently, there is a growing interest to identify new and green technology to improve construction techniques and to expand the road network. Ere fore, the search for new materials and improved techniques to process the local materials has received an increased focus. For developing countries, bio enzymes are now creating an opportunity to improve soil stability with tremendous effectiveness in the overall process of soil stabilization. In the world, bioenzymes have been used in different projects for several years and are generally proprietary products, often of patented formulation that needs intensive field tests. Currently, the use and production of bio enzymes is becoming the most promising key for the advancement of a country by saving time, energy, and finance. It also reduces environmental pollution due to carbon emission by the conventional stabilizers. 'us, a better understanding of this emerging technology is of utmost importance to exploit any improvement it can offer to soil stability. With little research and practice, it is possible to produce soil stabilizing bio enzymes using local raw materials. Due to this, production of low cost, easily and widely applicable, and environmentally friendly enzymatic formulations from locally available raw materials should be the interest of research and academic institutes of any country. system is applied to several major cities across the globe to demonstrate its use and usefulness.
12
Dauda, Deborah, e Manju Dominic. "Effectiveness of agricultural wastes in soil stabilization." Sustainability, Agri, Food and Environmental Research 10, n. 1 (11 marzo 2021): 14. http://dx.doi.org/10.7770/safer-v10n1-art2452.
Testo completoAbstract (sommario):
Many ways have been sought to improve soils, especially expansive soils which have been problematic to structures and pavements built over them and soil stabilization seems to be one of the effective ways. But soil stabilization in itself is not cost-effective hence the introduction of agricultural wastes being researched on and seen as a cheaper means to be used as stabilizing agents which helps in minimizing the cost of soil stabilization, thereby reducing the problem of waste disposal. Agricultural wastes like Rice Husk Ash, Bagasse Ash, Sugarcane Straw Ash, Saw Dust Ash, Coconut Husk Ash, Millet Husk Ash, Corn Cob Ash, Locust Bean Pod Ash, Cassava Peel Ash and Bamboo Leaf Ash have been experimented with in stabilizing soils and as well, serving as supplementary cementitious materials for cement in concrete production. The strengths of the soils and the concrete stabilized with these wastes were seen to improve significantly and their effectiveness was estimated based on an average optimum value. Agricultural waste processing Industries can be set up to help in the massive production of these natural stabilizers which would lessen the cost of soil stabilization using cement and chemicals and also generally reduce problems that are associated with waste disposal, helping in waste management.
Keywords—expansive soils, soil stabilization, agricultural wastes
13
S. G, Jadhav. "Soil Stabilization using Agricultural Waste". International Journal for Research in Applied Science and Engineering Technology 9, n. VII (31 luglio 2021): 2647–51. http://dx.doi.org/10.22214/ijraset.2021.36491.
Testo completoAbstract (sommario):
The stability and strength of structure depends on Construction design and also on the strength of subgrade soil on which the structure is being erected. Soil should poses adequate strength and stability for a safe and economic Construction work. Construction work on Expansive soils poses a problem for Civil Engineers as such soil shows swelling and shrinking when exposed to changes in the moisture content, thus methods of Soil Stabilization can be adopted. This paper examined the Effects of Agricultural Waste such as Sugarcane Straw Ash (SCSA) and Coconut Husk Ash (CHA) as Stabilizer Material for Economic and Environmental Friendly way of Soil Stabilization. The Geotechnical lab tests carried out were Liquid Limit, Plastic Limit, Plasticity Index Water Content, Specific Gravity Test and Standard Proctor Test on soil. Engineering tests like California Bearing Ration (CBR) (unsoaked) was performed with percentage of 8% with and without Stabilizer Material. The results showed significant improvement in CBR with addition of stabilizers. The research concludes Sugarcane Straw Ash (SCSA) and Coconut Husk Ash (CHA) are very effective source of soil stabilization.
14
Jadhav, Shubham G. "Soil Stabilization using Agricultural Waste". International Journal for Research in Applied Science and Engineering Technology 9, n. VI (30 giugno 2021): 3232–37. http://dx.doi.org/10.22214/ijraset.2021.35695.
Testo completoAbstract (sommario):
The stability and strength of structure depends on Construction design and also on the strength of subgrade soil on which the structure is being erected. Soil should poses adequate strength and stability for a safe and economic Construction work. Construction work on Expansive soils poses a problem for Civil Engineers as such soil shows swelling and shrinking when exposed to changes in the moisture content, thus methods of Soil Stabilization can be adopted. This paper examined the Effects of Agricultural Waste such as Sugarcane Straw Ash (SCSA) and Coconut Husk Ash (CHA) as Stabilizer Material for Economic and Environmental Friendly way of Soil Stabilization. The Geotechnical lab tests carried out were Liquid Limit, Plastic Limit, Plasticity Index Water Content and Specific Gravity Test and Standard Proctor Test on soil. Engineering tests like California Bearing Ration (CBR) (unsoaked) was performed with percentage of 8% with and without Stabilizer Material. The results showed significant improvement in CBR with addition of stabilizers. The research concludes Sugarcane Straw Ash (SCSA) and Coconut Husk Ash (CHA) are very effective source of soil stabilization.
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Churilin, V. S., e G. V. Pushkareva. "Soil genetics in its complex stabilization". Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture 23, n. 6 (26 dicembre 2021): 190–200. http://dx.doi.org/10.31675/1607-1859-2021-23-6-190-200.
Testo completoAbstract (sommario):
The problem of the inter-repair time of automobile roads in Russia can be solved by the reinforcing the subgrade soils with cement. Soil is a multicomponent system affecting the deformation and strength properties of the composition (cement and soil). The cement-soil composition has drawbacks, especially in seasonal freezing regions, which affects its durability.In order to increase the composition efficiency, the Nicoflok polymer-mineral additive is used to strengthen subgrade with cement. However, the influence of the type regional and genetic soil on strength properties of the cement-soil + Nicoflok composition is yet studied.The paper presents the factor analysis of the influence of soil genetics on the composition strength properties. The study of the multicomponent system includes the response surface of the soil genetics on the strength properties of the composition. Additional studies are required to move from the qualitative evaluation of the soil genetics on the composition (cement-soil + Nicoflok) to the quantitative evaluation. These studies must be carried out according to a single scheme, which regards the seasonal freezing of subgrade soils in the northern regions of European Russia and West Siberia.
16
Levenko, G. M. "DETERMINATION OF THE MAIN DESIGN PARAMETERS FOR SOIL CHEMICAL STABILIZATION". ACADEMIC JOURNAL Series: Industrial Machine Building, Civil Engineering 2, n. 49 (17 ottobre 2017): 82–87. http://dx.doi.org/10.26906/znp.2017.49.828.
Testo completoAbstract (sommario):
When designing or reconstructing buildings and structures on the swelling soils, it is necessary to be particularly concerned about the pattern of these soils behavior in order to subsequently be able to predict the behavior of the ‘basement – foundation – building’ system. The most effective way to stabilize soil behavior of the basement contaminated with industrial effluents is injection methods used for stabilization. The main task of soil chemical stabilization is to strengthen the bonds between soil particles with the help of chemical reagents. As a result of the research, the design parameters for foundations stabilization of soils composed contaminated with peroxy acid were determined. Depending on the concentration of peroxy acid in the soil and the density of the used sodium silicate solution, the limiting values initial components volume ratios were determined to carry out qualitative and reliable soil stabilization for the basements.
17
Kollaros, G., e A. Athanasopoulou. "SAND AS A SOIL STABILIZER". Bulletin of the Geological Society of Greece 50, n. 2 (27 luglio 2017): 770. http://dx.doi.org/10.12681/bgsg.11783.
Testo completoAbstract (sommario):
Clayey soils often exhibit undesirable engineering behaviour such as low strength, swelling and shrinkage characteristics etc. To improve these properties, the common method followed is stabilization. An experimental program carried out in this study aims to highlight the physical mechanisms of stabilization of an expansive soil by adding an inert material (sand). The study aimed to analyze the effect of stabilization on the variation of soil consistency and the results have shown that soil consistency improved appreciably. The findings of the laboratory testing procedures also presented substantial improvement in strength with the addition of sand percentages up to 60% by weight of soil, as well a noticeable alteration in the moisture-density relation. The soil tested could be used as subgrade material in pavement structures for low volume bearing roads, after its stabilization with fine sand. A further step in the investigation process could be the analysis of the swelling potential of clayey soils in conjunction with the addition of other waste materials along with sand, as well as the cost-benefit relationships of stabilization with sand in large projects like the highway construction.
18
Sas, Wojciech, Andrzej Głuchowski e Alojzy Szymański. "Impact of the stabilization of compacted cohesive soil – sandy clay on yield criterion improvement". Annals of Warsaw University of Life Sciences, Land Reclamation 46, n. 2 (1 dicembre 2014): 139–51. http://dx.doi.org/10.2478/sggw-2014-0012.
Testo completoAbstract (sommario):
Abstract Impact of the stabilization of compacted cohesive soil - sandy clay on yield criterion improvement. Soft soils, exhibiting low strength properties in the case of external load, require improvement. Chemical stabilization is easy in preparing and presents very good results in improving mechanical properties. In this paper, results of CBR and unconfined compressive strength test are presented for cohesive soil - sandy clay. Stabilization medium was Reymix, which is a cement derivative. Conducted tests define the characteristics of mechanical properties improvement and estimate yield criterion for stabilized soil during the time of stabilization, which is different for non-stabilized soils
19
Dwi Atmanto, Indrastono. "PENGENALAN STABILISASI TANAH DENGAN JET GROUTING". Teknik 34, n. 2 (13 settembre 2013): 75. http://dx.doi.org/10.14710/teknik.v34i2.5628.
Testo completoAbstract (sommario):
Due to restriction of land availability it is frequently we have to build constructions on soft or low bearingcapacity soils, so that soil stabilization must be applied in order to increase its properties. There are manytechniques of soil stabilization, where its applicability depends on many factors regarding appropriateengineering judgement. This paper presents the soil stabilization method by jet grouting, including its theory andpractice.
20
Yarba, Necmi, e Ekrem Kalkan. "Stabilization of Clayey Soils by Using the Organic Waste-Material". International journal of Science and Engineering Applications 9, n. 11 (18 novembre 2020): 129–32. http://dx.doi.org/10.7753/ijsea0911.1002.
Testo completoAbstract (sommario):
Soil stabilization known as the process of improving the engineering properties of soils is a method applied when the engineering properties of soil are not suitable for purpose. There are several methods of soil stabilization that could be implemented to improve the physical characteristics of the soil. In this study, the pine tree sawdust as an organic material wase used as additive material for stabilization of clayey soils and the influence of pine tree sawdust on the geotechnical properties of clayey soil was investigated in terms of strength behaviors. The pine tree sawdust is an organic waste resulting from the mechanical milling or processing of timber (wood) into various standard shapes and useable sizes. The strength properties of the clayey soil when blended with pine tree sawdust indicates that the pine tree sawdust is a good stabilization material for this problematic soil. As a result, it is concluded that the pine tree sawdust material as an organic material can be successfully used for the reinforce of clayey soils in the geotechnical applications.
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Maheswari, Anusuri Uma. "Improving Soil Properties by Using Coir". International Journal for Research in Applied Science and Engineering Technology 9, n. VIII (10 agosto 2021): 80–86. http://dx.doi.org/10.22214/ijraset.2021.37280.
Testo completoAbstract (sommario):
Construction on these soils is found to be expensive because of their low bearing strength. Soil having poor bearing need stabilization to make it suitable for construction purpose. In this study coir (extracted from coconut) is used as natural fiber for stabilization of soil. Stabilization using natural fiber is a cost-effective and eco-friendly approach to improve properties of soil. The study is carried out to evaluate the effects of coir fiber on properties of soil. Coconut coir in the soil were varied from 0, 0.5, 1.0, 1.5, and 2.0% and various soil properties were studied.
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Danu, Ritiksha. "Innovative Techniques for Soil Stabilization in Civil Engineering". Mathematical Statistician and Engineering Applications 70, n. 1 (31 gennaio 2021): 646–52. http://dx.doi.org/10.17762/msea.v70i1.2519.
Testo completoAbstract (sommario):
Soil stabilization is a critical aspect of civil engineering that aims to enhance the mechanical properties and stability of soil, thus enabling it to support the construction of various infrastructure projects. Over the years, researchers and engineers have continually sought innovative techniques to improve soil stabilization methods, leading to the development of several effective and sustainable solutions. This abstract provides an overview of some of the innovative techniques for soil stabilization in civil engineering, highlighting their principles, advantages, and potential applications.One innovative technique gaining attention in soil stabilization is the use of geosynthetics. Geosynthetics are synthetic materials specifically designed for geotechnical applications. They include geotextiles, geogrids, geocells, and geomembranes. Geosynthetics offer various benefits, such as reinforcing the soil, reducing soil erosion, improving drainage, and increasing the bearing capacity of weak soils. They can be used in different configurations based on project requirements, making them versatile and adaptable to a wide range of soil stabilization applications.
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Parsons, Robert L., e Justin P. Milburn. "Engineering Behavior of Stabilized Soils". Transportation Research Record: Journal of the Transportation Research Board 1837, n. 1 (gennaio 2003): 20–29. http://dx.doi.org/10.3141/1837-03.
Testo completoAbstract (sommario):
Stabilization of soils is an effective method for improving soil properties and pavement system performance. For many soils, more than one stabilization agent may be effective, and financial considerations or availability may be the determining factor on which to use. A series of tests was conducted to evaluate the relative performance of lime, cement, Class C fly ash, and an enzymatic stabilizer. These products were combined with a total of seven different soils with Unified Soil Classification System classifications of CH, CL, ML, and SM. Durability testing procedures included freeze–thaw, wet–dry, and leach testing. Atterberg limits and strength tests also were conducted before and after selected durability tests. Changes in pH were monitored during leaching. Relative values of soil stiffness were tracked over a 28-day curing period using the soil stiffness gauge. Lime- and cement-stabilized soils showed the most improvement in soil performance for multiple soils, with fly ash–treated soils showing substantial improvement. The results showed that for many soils, more than one stabilization option may be effective for the construction of durable subgrades. The enzymatic stabilizer did not perform as well as the other stabilization alternatives.
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Okonkwo, Ugochukwu Nnatuanya, e Charles Kennedy. "The Effectiveness of Cement and Lime as Stabilizers for Subgrade Soils with High Plasticity and Swelling Potential". Saudi Journal of Civil Engineering 7, n. 03 (13 aprile 2023): 40–60. http://dx.doi.org/10.36348/sjce.2023.v07i03.001.
Testo completoAbstract (sommario):
This study investigated the effects of cement and lime on the mechanical properties of subgrade soils, which are challenging to stabilize due to high plasticity and swelling potential. The study found that both cement and lime are effective stabilizing agents that increase the OMC, with cement being more effective in reducing the OMC of black cotton soil. The engineering properties of stabilized Chokocho subgrade soil were also evaluated, and the use of cement and lime as stabilizers was found to be effective in improving soil characteristics for subgrade applications. This was indicated by increased maximum dry density values, reduced plasticity index values, and increased California bearing ratio and unconfined compressive strength values. The chemical composition test demonstrated that calcium plays a significant role in soil stabilization, while aluminum can potentially affect soil stability negatively. Other elements such as magnesium, iron, silicon, zinc, and nickel contribute positively to soil stability. The low amounts of lead, copper, manganese, potassium, sulfur, and titanium present in the soil indicate a minor contribution to soil stabilization, but their impact on soil properties and plant growth cannot be ignored. Overall, the study highlights the importance of considering specific soil types and conditions when undertaking soil stabilization projects. The findings provide valuable information for future research in this field, particularly in investigating the effectiveness of other stabilizers and their interactions with specific soil types. The use of cement and lime in soil stabilization is an effective method for enhancing the strength and durability of weak soils, as shown by the reduction in plastic limit values observed in the stabilized soil samples. The appropriate content of cement and lime to use in soil stabilization could inform standards and codes for soil stabilization.
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Maurya ,, Stuti, Dr A. K. Sharma ,, Dr P. K. Jain , e Dr Rakesh Kumar. "Review on Stabilization of Soil Using Coir Fiber". International Journal of Engineering Research 4, n. 6 (1 giugno 2015): 296–09. http://dx.doi.org/10.17950/ijer/v4s6/605.
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Brahmachary, Tonmoy Kumar. "Soil Stabilization using Fly Ash and Cotton Fiber". International Journal of Trend in Scientific Research and Development Volume-1, Issue-6 (31 ottobre 2017): 1173–81. http://dx.doi.org/10.31142/ijtsrd2493.
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Uike, Poshak, Abdul Shadab, Y. D. Parihar, S. G. Padishalwar, N. J. Gedame e S. R. Marve. "Study on Stabilization of Soil Using WCL Overburden". International Journal of Research Publication and Reviews 5, n. 5 (17 maggio 2024): 7606–10. http://dx.doi.org/10.55248/gengpi.5.0524.1314.
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Kumar, Amit, e Kiran Devi. "Application of Nanotechnology in Soil Stabilization". Journal of Building Material Science 5, n. 2 (22 novembre 2023): 25–36. http://dx.doi.org/10.30564/jbms.v5i2.5913.
Testo completoAbstract (sommario):
Nano-technology is expanding its horizon in various science and technology fields. In civil engineering, soil is a complex material and used for various functions and applications. Meanwhile, sometimes an effective soil stabilization technique is needed to fulfil the site criteria and can be achieved by adopting various methods e.g., physical, chemical, thermal or reinforcement using geotextiles and fabrics. The mechanism of soil stabilization using nanomaterials is still unexplored and open to prospective researchers. The present article attempts to touch and explore the possibilities of nano-technology in soil improvement and its applications in various civil engineering works. Microstructural analysis of the nanomaterials treated soils using the latest equipment has also been discussed. The study interprets that the use of nano materials is still limited, due to their high cost and sophisticated handling procedures. Though the use of nanoparticles in soil stabilization results in extraordinary improvements in various soil properties, the improved soil properties could be utilized for various geotechnical projects. The present study bridges the past findings to the present scenario of nanomaterials in soil improvement.
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Banu, Shaziya, e Mousa Attom. "Internal Erosion Stabilization of Cohesionless Soil Using Lime". Water 15, n. 11 (24 maggio 2023): 1992. http://dx.doi.org/10.3390/w15111992.
Testo completoAbstract (sommario):
Soil embankments are valuable for the adequate reserve and supply of water to multiple industries. However, they are susceptible to internal soil erosion, which may ultimately lead to structural collapse. To counteract this issue, soil stabilization is practiced in the construction industry. This paper proposes the internal erosion stabilization of cohesionless soil using quicklime. For this research, two cohesionless soil types were investigated and treated with quicklime: poorly graded and well-graded cohesionless soils. For poorly graded soil, the lime percentage varied from 0.0% to 6.0% based on the soil’s weight, while for well-graded soil, it ranged from 0.0% to 3.0%. All the soil specimens were cured for 24 h and tested using the hole erosion test (HET) to replicate the internal erosion effortlessly. The analyzed results demonstrated the efficiency of quicklime as an internal erosion stabilizer for cohesionless soils. The optimum lime content for poorly graded cohesionless soils was 5.0%; for well-graded, the percentage was approximately 3.0%. Moreover, adding lime significantly improved the strength, critical shear stress, and erosion rate index of the soil.
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Sheikh, Saddam, Ashutosh Mohod, Safal Sahare, Chandrakant Karambe, Anshul Raut, Bhavna Bhendarkar e Rahul Jichkar. "Soil Stabilization by Using Inorganic Waste". International Journal for Research in Applied Science and Engineering Technology 10, n. 4 (30 aprile 2022): 615–17. http://dx.doi.org/10.22214/ijraset.2022.41299.
Testo completoAbstract (sommario):
Abstract: Soil stabilization is a process which improves the physical properties of soil, such as increasing shear strength, bearing capacity etc. which can be done by use of controlled compaction or addition of suitable admixtures like bituminous, lime and waste materials like plastic ,fly ash, phosphor gypsum etc. This new technique of soil stabilization can be effectively used to meet the challenges of society, to reduce the quantities of waste, producing useful material from non-useful waste materials. Plastic such as shopping waste bottles and bitumen is used to as a reinforcement to perform the CBR studies while mixing with soil for improving engineering performance of sub grade soil. Plastic strips obtained from waste plastic were mixed randomly with the soil. A series of California Bearing Ratio (CBR) tests ,unconfined compressive strength test(UCS) were carried out on randomly reinforced soil by varying percentage of plastic and bitumen respectively with different proportions. Results of CBR tests demonstrated that inclusion of waste plastic strips in soil with appropriate amounts improved strength and deformation behavior of sub grade soils substantially. Keywords: CBR, Plastic bottle, Plastic bag, Bitumen, Soil Stabilization
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Darmiyanti, Lydia, e Ujang Wiharja. "Effect of Salt Solution in Electrochemical Stabilization with Variation of Potential Difference on Clay's Shear Strength". Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia 9, n. 1 (18 aprile 2024): 28–40. http://dx.doi.org/10.33366/rekabuana.v9i1.5434.
Testo completoAbstract (sommario):
Clay is one of the problematic soils in Indonesia, with a distribution in Java of close to 20% of surface pedology. The biggest problem with clay soil is its ability to swell when it absorbs water and shrink when the water content decreases. Indonesia's tropical climate, where only the rainy and dry seasons, significantly affects clay's swelling potential, hindering the soil's mechanical properties. The significant expansion potential causes the soil to have a slight shear angle, which affects its bearing capacity. This condition underlies the urgency of clay soil improvement to increase the shear strength of the soil. Electrochemical stabilization is one of the effective methods for soils with low permeability. This study aimed to determine the most optimum voltage in electrochemical stabilization using a salt solution. The electrochemical process is used in soil stabilization. This method is used to improve soils with low permeability and high plasticity index (18%), which results in increased bearing capacity and decreased soil development. This study was conducted with four different stress scenarios, and from the results of testing the mechanical properties of the soil, it was found that the greatest shear strength occurred at a stress of 12V. Stabilization of clay soil by electrochemistry can be inferred from the research to increase the value of soil shear strength and affect the increase in soil bearing capacity.
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Al-Yasir, Abdullah Talib, e Abbas Jawad Al-Taie. "Geotechnical Review for Gypseous Soils: Properties and Stabilization". Jurnal Kejuruteraan 34, n. 5 (30 settembre 2022): 785–99. http://dx.doi.org/10.17576/jkukm-2022-34(5)-04.
Testo completoAbstract (sommario):
In many arid and semi-arid regions, collapsible soils are well-known to be problematic in nature and negatively affect the performance of engineering structures. Gypseous soil considers one of the well-known types of collapsible soil. It represents a real challenge to engineers due to different problems encountered by engineering projects implemented in this soil. The mineralogy, composition, and fabric of gypseous soil affect its ability to deform when subjected to wetting (due to changing the whole structure soil particles). Numerous studies considered the problems of gypseous soils and their treatment with different additives and using different methods. In this paper, the properties of gypsum (physical appearances, hardness, density, chemical structure), gypsum effect on soil properties (specific gravity, compaction properties, shear strength), main geotechnical properties of gypseous soils, their problems, and different important additives (traditional and non-traditional) and methods used in gypseous soils problems mitigation have been discussed. Gypsum is one of unpredictable materials that have different forms, low hardness, and low density. Gypsum is the main occurring source of sulphate in soils, it affects their geotechnical properties to different degrees depending on its content, the presence of the other salts (than gypsum), soil gradation and type, and organic matters. There is a critical gypsum content beyond which gypsum negatively affects the shear strength of soils, this content is (10-20)%. Finally, although there are many additives used in the treatment of gypsum soil, the use of some additives should be done with caution to avoid destructive results, especially with clay gypseous soil.
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Aqel, Rawan, Mousa Attom, Magdi El-Emam e Mohammad Yamin. "Piping Stabilization of Clay Soil Using Lime". Geosciences 14, n. 5 (30 aprile 2024): 122. http://dx.doi.org/10.3390/geosciences14050122.
Testo completoAbstract (sommario):
Construction of earth fill dams offers a cost-effective solution for various purposes. However, their susceptibility to internal soil erosion, known as piping, poses a significant risk of structural failure and resultant loss of life and property. Soil stabilization emerges as a practical technique to fortify these dams against such threats. This study investigated the impact of lime on the internal erosion properties of clay soils, focusing on CH and ML soil types. Specimens of different lime content were prepared and remolded at 95% relative compaction and optimum moisture content. Hole Erosion tests at varying lime concentrations and curing durations were adapted to conduct the investigation. This investigation aims to optimize lime content and curing time for cohesive soil stabilization against internal erosion. Findings revealed that 2% and 5% of quicklime, by dry weight of the soil, effectively stabilized CH and ML soils, respectively, against internal erosion, with a two-day curing period proving optimal. Furthermore, the addition of lime significantly enhanced erosion rate index and critical shear strength in clay soil, underscoring its efficacy in soil stabilization efforts.
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Manikanta, Adusumalli, Birudula Nageswara Rao, K. Swathi Reddy, I. Manikanta Sai Charan, M. Mahesh, N. Siva Shankar e P. Usha Kiran. "Soil Stabilization Using Crumb Rubber Powder". International Journal of Innovative Research in Computer Science and Technology 10, n. 9 (30 settembre 2022): 163–65. http://dx.doi.org/10.55524/ijircst.2022.10.5.25.
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Because there are more used car tyres produced each year, disposing of them has become a significant environmental issue on a global scale. Utilizing used tyres will reduce the effect on the environment and increase resource preservation. The stabilisation of soils using CRP (5%, 10%, 15%) is discussed in this article. The conduct and effectiveness of the stabilised soil were evaluated using the soil properties, compaction, California bearing ratio (CBR), and direct shear test. When soil and CRP are combined, it is seen that the maximum dry density and ideal moisture content decline as the percentage of crumb rubber in the soil increases. Bearing capacity and tensile strength are barely affected by blending. Nevertheless, the numbers stayed within reasonable bounds.
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Reichenbach, Mario, Peter Fiener, Gina Garland, Marco Griepentrog, Johan Six e Sebastian Doetterl. "The role of geochemistry in organic carbon stabilization against microbial decomposition in tropical rainforest soils". SOIL 7, n. 2 (2 agosto 2021): 453–75. http://dx.doi.org/10.5194/soil-7-453-2021.
Testo completoAbstract (sommario):
Abstract. Stabilization of soil organic carbon (SOC) against microbial decomposition depends on several soil properties, including the soil weathering stage and the mineralogy of parent material. As such, tropical SOC stabilization mechanisms likely differ from those in temperate soils due to contrasting soil development. To better understand these mechanisms, we investigated SOC dynamics at three soil depths under pristine tropical African mountain forest along a geochemical gradient from mafic to felsic and a topographic gradient covering plateau, slope and valley positions. To do so, we conducted a series of soil C fractionation experiments in combination with an analysis of the geochemical composition of soil and a sequential extraction of pedogenic oxides. Relationships between our target and predicting variables were investigated using a combination of regression analyses and dimension reduction. Here, we show that reactive secondary mineral phases drive SOC properties and stabilization mechanisms together with, and sometimes more strongly than, other mechanisms such as aggregation or C stabilization by clay content. Key mineral stabilization mechanisms for SOC were strongly related to soil geochemistry, differing across the study regions. These findings were independent of topography in the absence of detectable erosion processes. Instead, fluvial dynamics and changes in soil moisture conditions had a secondary control on SOC dynamics in valley positions, leading to higher SOC stocks there than at the non-valley positions. At several sites, we also detected fossil organic carbon (FOC), which is characterized by high C/N ratios and depletion of N. FOC constitutes up to 52.0 ± 13.2 % of total SOC stock in the C-depleted subsoil. Interestingly, total SOC stocks for these soils did not exceed those of sites without FOC. Additionally, FOC decreased strongly towards more shallow soil depths, indicating decomposability of FOC by microbial communities under more fertile conditions. Regression models, considering depth intervals of 0–10, 30–40 and 60–70 cm, showed that variables affiliated with soil weathering, parent material geochemistry and soil fertility, together with soil depth, explained up to 75 % of the variability of SOC stocks and Δ14C. Furthermore, the same variables explain 44 % of the variability in the relative abundance of C associated with microaggregates vs. free-silt- and-clay-associated C fractions. However, geochemical variables gained or retained importance for explaining SOC target variables when controlling for soil depth. We conclude that despite long-lasting weathering, geochemical properties of soil parent material leave a footprint in tropical soils that affects SOC stocks and mineral-related C stabilization mechanisms. While identified stabilization mechanisms and controls are similar to less weathered soils in other climate zones, their relative importance is markedly different in the tropical soils investigated.
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Lindh, Per, e Polina Lemenkova. "Geotechnical Properties of Soil Stabilized with Blended Binders for Sustainable Road Base Applications". Construction Materials 3, n. 1 (12 marzo 2023): 110–26. http://dx.doi.org/10.3390/constrmater3010008.
Testo completoAbstract (sommario):
This study aimed at evaluating the effect of blended binders on the stabilization of clayey soils intended for use as road and pavement materials in selected regions of Sweden. The stabilization potential of blended binders containing five stabilizers (cement, bio fly ash, energy fly ash, slag and lime) was investigated using laboratory tests and statistical analysis. Soil samples were compacted using Swedish Standards on UCS. The specimens were stabilized with blended mixtures containing various ratios of five binders. The effects of changed ratio of binders on soil strength was analyzed using velocities of seismic P-waves penetrating the tested soil samples on the day 14 of the experiment. The difference in the soil surface response indicated variations in strength in the evaluated specimens. We tested combination of blended binders to improve the stabilization of clayey soil. The mix of slag/lime or slag/cement accelerated soil hardening process and gave durable soil product. We noted that pure lime (burnt or quenched) is best suited for the fine-grained soils containing clay minerals. Slag used in this study had a very finely ground structure and had hydraulic properties (hardens under water) without activation. Therefore, slag has a too slow curing process for it to be practical to use in real projects on stabilization of roads. The best performance on soil stabilization was demonstrated by blended binders consisted of lime/fly ash/cement which considerably improved the geotechnical properties and workability of soil and increased its strength. We conclude that bearing capacities of soil intended for road construction can be significantly improved by stabilization using mixed binders, compared to pure binders (cement).
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Rawnsley, John. "Trees and Soil Stabilization". Environmental Conservation 18, n. 4 (1991): 371. http://dx.doi.org/10.1017/s0376892900022748.
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Hearn, G. J., T. Hunt e S. d'Agostino. "C3 Soil slope stabilization". Geological Society, London, Engineering Geology Special Publications 24, n. 1 (2011): 165–88. http://dx.doi.org/10.1144/egsp24.12.
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Trushinskii, M. Yu. "Electrochemical soil stabilization method". Soil Mechanics and Foundation Engineering 30, n. 2 (marzo 1993): 61–65. http://dx.doi.org/10.1007/bf01782910.
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Ishkov, Alexey A., Anatoly A. Gubarkov e Gennady V. Anikin. "Determining the efficiency of functioning of systems of temperature stabilization of soils with horizontal evaporator filled with different refrigerants". Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy 5, n. 4 (2019): 37–57. http://dx.doi.org/10.21684/2411-7978-2019-5-4-37-57.
Testo completoAbstract (sommario):
The construction of buildings and structures in the zones of distribution of frozen soils follows the principle I. The bearing capacity of frozen soils significantly depends on their value of negative temperature. When thawed, such soils shrink, which negatively affects the objects built on them. To prevent this, temperature stabilization systems for frozen soils are used. Simultaneous accounting of the thermal effect on the frozen soil of an engineering object, as well as the temperature stabilization system of soils, is a difficult task, the accuracy of determining the strength characteristics of the soil will depend on the correctness of its solution. This paper presents calculations of the temperature fields of frozen soils with simultaneous exposure to an object with intense heat (RVS with hot oil) and soil temperature stabilization system of the horizontal natural-acting tubular system (GET) type. The calculations follow the previously developed mathematical model of the temperature stabilization system with a horizontal evaporator. The authors consider the efficiency of the operation of the GET system charged with different refrigerants (ammonia and carbon dioxide) for different geocryological subzones of Western Siberia. Particular attention should be paid to the fact that the soil was initially at a close to positive temperature (−0,1 °C), but after calculating for 10 years, the entire soil mass around the evaporation part of the temperature stabilization system froze because of the soil temperature stabilization system. Systems charged with carbon dioxide showed better work efficiency. This is due to two factors: a lower value of the lower critical heat load, which gives more working days per year relative to the system charged with ammonia; and the evaporative part of the system on carbon dioxide, which has the average temperature 1 °C lower than ammonia systems. The results show that carbon dioxide as the heat carrier for the GET system is the most effective.
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SIERRA, M., F. J. MARTÍNEZ, V. BRAOJOS, A. ROMERO-FREIRE, I. ORTIZ-BERNAD e F. J. MARTÍN. "Chemical stabilization of organic carbon in agricultural soils in a semi-arid region (SE Spain)". Journal of Agricultural Science 154, n. 1 (11 maggio 2015): 87–97. http://dx.doi.org/10.1017/s002185961500012x.
Testo completoAbstract (sommario):
SUMMARYLand use and management, together with soil properties, determine soil organic carbon (SOC) concentration and its stabilization mechanisms. Four soils (0–30 cm depth) were studied in a semi-arid region with different uses and management regimes: two soils with olive cultivation, both under a non-tillage regime and one with a cover crop (OCC) and the other without (ONT); a fluvial terrace soil (FT) with cereal–sunflower–fallow rotation; and an unaltered soil under natural vegetation (oak trees; OT). The OT soil had a higher SOC concentration than the agricultural soils (OCC, ONT and FT), followed by the FT soil without significant differences. The olive grove soils had a lower SOC concentration but the two types of management differed significantly, with higher concentrations due to the cover crop. Hydrofluoric acid (HF)-soluble, hydrochloric acid (HCl)-resistant, and non-oxidizable (sodium peroxodisulphate; Na2S2O8) SOC fractions were determined at different depths (0–5, 5–10, 10–20 and 20–30 cm). The relative HCl-resistant and non-oxidizable SOC fractions increased with depth, whereas the relative HF-soluble SOC fraction varied slightly among the four soils considered. Differences in the SOC-stabilization mechanism were found according to the chemical SOC fractionation. In the FT and OT soils, where HF-soluble SOC and soil respiration rates were higher, the intense biological activity rapidly degraded the plant debris, being partially fixed and stabilized by the fine mineral-soil fraction as the principal stabilization mechanism of SOC. The olive grove soils had lower biological activity but higher SOC resistance to oxidation with Na2S2O8, thus suggesting that chemical recalcitrance of soil organic matter was a relevant stabilization mechanism in these soils.
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Ter-Martirosyan, Zaven G., e Aleksandr S. Akuleckij. "Interaction between a long pile and the multilayered soil body with account for elastic and rheological properties as well as soil stabilization". Vestnik MGSU, n. 5 (maggio 2021): 608–14. http://dx.doi.org/10.22227/1997-0935.2021.5.608-614.
Testo completoAbstract (sommario):
Introduction. When the footing is embedded in loose clayey soils, buildings may settle down for a long period of time. The projected settlement period is of great importance for the design of foundations designated for such soils. Therefore, the approach to describing the process of foundation settlement must be considered as rheological. This article addresses the setting of and a solution to the problem of interaction between a long pile and surrounding multilayered and underlying soils with account taken of the rheological properties of the surrounding soil body. The creep process is considered with account taken of stabilization.
Materials and methods. Linear problem setting is considered. The analytical method is employed to present a solution. The rheological stabilization parameter is used to describe the creep process.
Results. An expression is derived to determine the reduced shear modulus for the multilayered soil body. The relationship between the value of the force applied to the pile toe and the time is derived with regard for the rheological stabilization parameter. Analytical solutions are enforced by graphs in the article. Graphs describing the relationship between pile settlement, the force applied to the toe of the pile, passing through alternating soil layers, and the time are provided for various values of viscosity and the variable parameter of stabilization.
Conclusion. Solutions, obtained by the co-authors, are used to perform the preliminary identification of displacement of long piles and surrounding multilayered underlying soils. The rate of stress changing underneath the pile toe depends on soil viscosity. The rheological coefficient of stabilization has a major effect on the time of pressure stabilization underneath the pile toe, as well as the time of the pile settlement stabilization. Dependencies, derived in this article, make it possible to project the future settlement pattern.
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Priya, Prerna, e Ran Vijay Singh. "Stabilization of Black cotton soil using Fly ash". International Journal of Recent Technology and Engineering 9, n. 5 (30 gennaio 2021): 91–96. http://dx.doi.org/10.35940/ijrte.e5164.019521.
Testo completoAbstract (sommario):
Expansive Black cotton clay soils are widely distributed worldwide, and are a significant damage to infrastructure and buildigs.It is a common practice around the world to stabilize black cotton soil using fly ash to improve the strength of stabilized sub- base and sub grade soil. Soil stabilization is the improvement of strength or bearing capacity of soil by controlled compaction, proportioning or addition of suitable admixtures or stabilizers. The Black cotton soils are extremely hard when dry, but lose its strength fully when in wet condition. In monsoon they guzzle water and swell and in summer they shrink on evaporation of water from there. Because of its high Swelling and shrinkage characteristics the black cotton soils has been a challenge to the highway engineers.So in this research paper fly ash has been used to improve the various strength properties of natural black cotton soil.The objective of this research paper is to improve the engineering properties of black cotton soil by adding different percentage of fly ash by the weight of soil and make it suitable for construction. A series of standard Proctor tests (for calculation of MDD and OMC) and California Bearing Ratio (C.B.R) tests are conducted on both raw Black cotton soil and mixed soil with different percentages of fly ash (5%, 10%, 20%, 30%) by weight. A comparison between properties of raw black cotton soil, black cotton soil mixed with fly ash are performed .It is found that the properties of black cotton soil mixed with fly ash are suitably enhanced.
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Al-Gharbawi, Ahmed S. A., Ahmed M. Najemalden e Mohammed Y. Fattah. "Expansive Soil Stabilization with Lime, Cement, and Silica Fume". Applied Sciences 13, n. 1 (29 dicembre 2022): 436. http://dx.doi.org/10.3390/app13010436.
Testo completoAbstract (sommario):
The type of soil known as expansive soil is capable of changing its volume through swelling and contracting. These types of soils are mostly composed of montmorillonite, a mineral with the capacity to absorb water, which causes the soil to heave by increasing its volume. Due to their capacity to contract or expand in response to seasonal fluctuations in the water content, these expansive soils might prove to be a significant risk to engineering structures. Many studies have dealt with swelling soils and investigated the behavior of these soils, as well as their improvement. In this study, three percentages of lime, cement, and silica fume (5, 7, 9%) are used to stabilize the expansive soil, and the work is divided into two sections: the first is using a consolidation test to record the free swell and swell pressure for the untreated and treated soils; in the second part, the grouting technique is utilized as a process that can be applied in the field to maintain the improvement in the bearing capacity. It is concluded that the soil stabilized with different percentages of lime, cement, and silica fume exhibits a decrease in both free swell and swelling pressure by approximately 65% and 76%, respectively, as compared with untreated soil. The soil grouted with silica fume increases the bearing capacity of footings resting on the grouted soil by approximately 64% to 82% for the soil treated with 5% and 9% silica fume, respectively, as compared with untreated soil.
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L., Chethan, Nandushree N., Naveen Kumara B. e Karthik Kumar B. "EXPANSIVE SOIL STABILIZATION USING IRON ORE TAILINGS". International Journal of Advanced Research 10, n. 07 (31 luglio 2022): 80–89. http://dx.doi.org/10.21474/ijar01/15006.
Testo completoAbstract (sommario):
The foundation of the natural world is the soil, which is prevalent in many parts of India and has a high silt content, low strength, and weak bearing ability. The loads placed on these soils during construction or during the structures useful life are too great for them to bear. In India, expansive soil covers 20 percent of the land. To enhance the functionality of expansive soils, soil stabilization is used.In this research work, an attempt has been made to use Iron Ore Tailings (IOT) an industrial by-product as stabilizing agent for expansive soil. In this study, expansive soil is replaced with IOT from 0% to 30% at 5% interval. It was found from the experimental observations that the values of Liquid limit and Plastic limit decreased with increase in percentage of IOT. Free swell index shows a total decrement of 55% at 30% IOT content. MDD of standard and modified compaction increased with higher percentage of IOT whereas the OMC decreased accordingly. CBR values of un-soaked condition yielded whereas no penetration resistance was observed in soaked condition. Swelling pressure effectively decreased to a total of 50% at 30% IOT content. Hence, it can be concluded that IOT will help in improving the mechanical properties of expansive soil.
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Ambagade, Shreya. "Effect of Marble Dust & Rice Husk Ash to Stabilize Expansive Soil". International Journal for Research in Applied Science and Engineering Technology 9, n. VI (30 giugno 2021): 5102–6. http://dx.doi.org/10.22214/ijraset.2021.36035.
Testo completoAbstract (sommario):
Soil Stabilization is the alteration of soils to enhance their physical properties. Stabilization can increase the shear strength of a soil and/or control the shrink-swell properties of a soil, thus improving the load bearing capacity of a sub-grade to support pavements and foundations. The Engineering Properties of soil are depended on the many points like minerals, water table, soil water behaviour etc. which vary as per area to area. Due to which we can’t get desire properties suitable to our needs of construction. To resolve this problem, we have technique called stabilization which means to stable or to modify or to improve the soil properties in positive manner. So, we can have a construction works which fulfil our needs and objective.
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Abdila, Syafiadi Rizki, Mohd Mustafa Al Bakri Abdullah, Romisuhani Ahmad, Dumitru Doru Burduhos Nergis, Shayfull Zamree Abd Rahim, Mohd Firdaus Omar, Andrei Victor Sandu, Petrica Vizureanu e Syafwandi. "Potential of Soil Stabilization Using Ground Granulated Blast Furnace Slag (GGBFS) and Fly Ash via Geopolymerization Method: A Review". Materials 15, n. 1 (5 gennaio 2022): 375. http://dx.doi.org/10.3390/ma15010375.
Testo completoAbstract (sommario):
Geopolymers, or also known as alkali-activated binders, have recently emerged as a viable alternative to conventional binders (cement) for soil stabilization. Geopolymers employ alkaline activation of industrial waste to create cementitious products inside treated soils, increasing the clayey soils’ mechanical and physical qualities. This paper aims to review the utilization of fly ash and ground granulated blast furnace slag (GGBFS)-based geopolymers for soil stabilization by enhancing strength. Previous research only used one type of precursor: fly ash or GGBFS, but the strength value obtained did not meet the ASTM D 4609 (<0.8 Mpa) standard required for soil-stabilizing criteria of road construction applications. This current research focused on the combination of two types of precursors, which are fly ash and GGBFS. The findings of an unconfined compressive strength (UCS) test on stabilized soil samples were discussed. Finally, the paper concludes that GGBFS and fly-ash-based geo-polymers for soil stabilization techniques can be successfully used as a binder for soil stabilization. However, additional research is required to meet the requirement of ASTM D 4609 standard in road construction applications, particularly in subgrade layers.
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Vaníček, Ivan. "STABILIZATION AND SPECIFICATION OF CHARACTERISTIC VALUE OF GEOTECHNICAL PARAMETERS". Acta Polytechnica CTU Proceedings 10 (15 ottobre 2017): 61. http://dx.doi.org/10.14311/app.2017.10.0061.
Testo completoAbstract (sommario):
Soil stabilization, process, by which the soil properties are improved, is getting growing attention during last periods. Paper is focused on application for earth structures. Methods of soil stabilization together with their applicability for different soils are discussed firstly. The sensitivity of the process of the cautious estimation of the characteristic values of geotechnical parameters which are subsequently used for the design, is shown on the base of the logical scheme of the geotechnical design report for earth structures. Finally the need of the laboratory tests for the closer specification of the soil stabilization technology and also for the determination of the geotechnical data are discussed.
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James, Jijo, S. V. Sivapriya, Sajid Ali, T. R. Madhu e Basudev Singh. "WETTING AND DRYING RESISTANCE OF LIME-STABILIZED EXPANSIVE SOILS MODIFIED WITH NANO-ALUMINA". Elektronički časopis građevinskog fakulteta Osijek 12, n. 22 (30 luglio 2021): 70–80. http://dx.doi.org/10.13167/2021.22.6.
Testo completoAbstract (sommario):
Weak soil at construction sites necessitates ground improvement. Chemical stabilization is typically carried out using either lime or cement. The primary objective of this study was to assess the strength and durability of lime-stabilized soils modified with nano-alumina (NA). This study adopted the scientifically established initial consumption of lime (ICL) content for soil stabilization. In addition, nano-alumina was added in varying percentages as an auxiliary additive. It was observed that 0.5 % of nano-alumina was optimal with respect to the ICL for maximizing the soil stabilization. The stabilized soils were cured for 0, 7, 14, and 28 days. Post-curing testing revealed that the strength increased sixfold for the optimal combination, compared with the virgin soil. To understand the durability behavior of the optimal combination, the stabilized soil specimens were subjected to wetting and drying cycles after 28 days of curing. The optimal combination was nearly as durable as that of the lime-stabilized soil subjected to five cycles of wetting and drying.
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Li, Yang, Jia Xi Tang, Tao Zhang, Mei Hua Lian e Xi Zhuo Tian. "Study on Chemical Stabilization in Arsenic Contaminated Soil: A Review". Applied Mechanics and Materials 295-298 (febbraio 2013): 1089–92. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.1089.
Testo completoAbstract (sommario):
This paper review the chemical stabilization in arsenic contaminated soil use the in situ chemical stabilization technology. Application of iron oxide, alkaline material and phosphorus are very effective agents to fix the arsenic-contaminated soil. In addition, the future study on remediation technology for arsenic-contaminated soils was prospected.