Готові списки джерел за темами / Grouting (Soil stabilization) Testing

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Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 29 січня 2023

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Статті в журналах з теми "Grouting (Soil stabilization) Testing"

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Ghadr, Soheil, Arya Assadi-Langroudi, Ching Hung, Brendan C. O’Kelly, Hadi Bahadori, and Taher Ghodsi. "Stabilization of Sand with Colloidal Nano-Silica Hydrosols." Applied Sciences 10, no. 15 (July 28, 2020): 5192. http://dx.doi.org/10.3390/app10155192.

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Colloidal nano-silica (NS) hydrosols are electrochemically stabilized, polymerized amorphous silica in low viscosity solutions, and in the form of hydrated gels, silica globules or pellicles. Compared to applications in concrete technology, the use of silica-based binders for groundwork applications has received little attention. Silica-based hydrosols impose no known direct risks to humans and are generally courteous to the soil health and ecosystem service functions. Their localized impact on microorganisms however needs to be further investigated. To this end, NS hydrosols have a scope for use as an alternative low-viscose material in groundworks. The current understanding of interactions between NS hydrosols and soil (sand) is, however, confused by the limited availability of experimental evidence concerning undrained static flow and large strain behavior. The contributions, presented in this paper, advance the knowledge through experimental testing, molecular modelling, and micro-analytical measurements. Four grades of colloidal NS (1–15 wt.%) were synthesized for grouting medium-dense sub-angular fine siliceous sand specimens. Consolidated-undrained triaxial compression testing was performed on the base and treated sand for isotropic consolidation over the effective stress range 100–400 kPa. Overall, silica impregnation produced improvements in yield and residual undrained shear strengths, restricted unwelcomed impacts of excess pore water pressure, and led to the formation of generally more dilative, strain-hardening behavior. Steady states and static flow potential indices are also studied as functions of confinement level and viscosity of the NS grout.
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Ibragimov, M. N., V. I. Mitrakov, and N. T. Fateev. "Experience with soil stabilization by vibratory grouting." Soil Mechanics and Foundation Engineering 44, no. 6 (November 2007): 210–13. http://dx.doi.org/10.1007/s11204-007-0039-5.

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Dwi Atmanto, Indrastono. "PENGENALAN STABILISASI TANAH DENGAN JET GROUTING." Teknik 34, no. 2 (September 13, 2013): 75. http://dx.doi.org/10.14710/teknik.v34i2.5628.

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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.
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Hu, Haibo, Qiqin Jin, Feng Yang, Jiajin Zhou, Junjie Ma, Xiaonan Gong, and Jin Guo. "A Novel Method for Testing the Effect of Base Post-Grouting of Super-Long Piles." Applied Sciences 12, no. 21 (October 30, 2022): 10996. http://dx.doi.org/10.3390/app122110996.

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The base post-grouting technology is widely used in pile foundation engineering to improve its behavior. For super-long piles, due to the large compression of pile shaft, conventional static load tests cannot effectively test the effect of post-grouting at the pile base. This study introduced a novel method to test the effect of base post-grouting of three 88 m long piles. A total of three test piles were grouted at the bottom of the piles. The grouting amount of the No. 1 pile was 500 kg, the No. 2 pile was 250 kg, and the No. 3 pile was 0 kg. The transmitted wave method in the pile and dynamic penetration method were used in combination to quantitatively evaluate the effect of base post-grouting on the soil below the pile base. The influencing range of base post-grouting was firstly evaluated by the transmitted wave method in the pile, and the strength of the soil before and after grouting under the same pile base was measured by the dynamic penetration method. The test results showed that: the depth of the pile base reinforcement was 2 m for No. 1 pile, and 1 m for No. 2 pile, which was consistent with the grouting amount; the elastic modulus of the soil below the pile base after base post-grouting was about twice that of the soil before base post-grouting; the strength of the soil below pile base was largely improved after grouting; and the bearing capacity of the base soil layer increased from 35.5% to 41.7% when the grouting amount increased from 250 kg to 500 kg.
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Baharuddin, INZ, Hairin Taha, RC Omar, R. Roslan, FS Buslima, and K. Rizal. "Evaluation of Vege-Grout Treated Slope by Electrical Resistivity." International Journal of Engineering & Technology 7, no. 4.35 (November 30, 2018): 168. http://dx.doi.org/10.14419/ijet.v7i4.35.22352.

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Soil stabilization using bio-grouting method based on microbial induced calcium carbonate precipitation (MICP) technology has been developed recently to improve the engineering properties of the soil. This new technology could provide an alternative to traditional methods of soil stabilization using soil-cement and chemical grouting. Vegetable waste is a good source for the growth of various kinds of microorganisms which is suitable to be applied as bio-grouting material. The bio-grout extract known as vege-grout was able to induce bio-cementation and bio-clogging process. In this study, vege-grout from vegetable waste was injected into the soil to strengthen the slope and improve the mechanical properties of the affected area. The changes in the subsurface soil after treatment with vege-grout were evaluated by electrical resistivity measurement. Resistivity test showed the resistance in the soil has increased after the grouting using vege-grout. Results indicated that the underneath soils have transformed from medium dense sand to dense sand. The water containment in the subsurface appeared to shift deeper into the ground. SEM analysis showed evidence of bio-clogging process as a result of microbial activities in the soil. This analysis showed that the vege-grout from vegetable waste has successfully strengthened and stabilized the slope from soil erosion.
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Pamuk, Ahmet, Patricia Gallagher, and Korhan Adalier. "Soil Grouting as Seismic Liquefaction Countermeasure." Advanced Materials Research 1025-1026 (September 2014): 1035–40. http://dx.doi.org/10.4028/www.scientific.net/amr.1025-1026.1035.

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This paper presents a series of centrifuge tests studying the performance of colloidal silica grouted soil layers during permanent lateral ground deformations due to earthquake induced lateral spreading. Two centrifuge tests were conducted to study liquefaction resistance of liquefiable soil deposits stabilized with colloidal silica, and then the results were compared with the tests conducted on similar soil deposits without any soil remediation. The testing results on remediated soils showed excellent resistance against the liquefaction and associated lateral and vertical ground deformations.
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Nichols, Silas C., and Deborah J. Goodings. "Physical Model Testing of Compaction Grouting in Cohesionless Soil." Journal of Geotechnical and Geoenvironmental Engineering 126, no. 9 (September 2000): 848–52. http://dx.doi.org/10.1061/(asce)1090-0241(2000)126:9(848).

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Li, He Qun, and Feng Yun Yu. "On the Tilt of the Kaifeng Iron Pagoda and Rectification Measures." Applied Mechanics and Materials 488-489 (January 2014): 625–28. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.625.

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Due to the frequent northwest wind, many times of earthquakes and floods, as well as the loose soil and higher underground water level, the famous pagoda has been in the tilt for many years. Rectification measures include foundation stabilization, landing, grouting, drawing out soil, water-injecting, so on. Be sure to make model test before operation.
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Chen, Hua Liang, and Da Wei Wang. "Chemical Grouting Technique to Strengthen the Bridge (Culvert) Abutment Soft Ground Projects." Applied Mechanics and Materials 204-208 (October 2012): 2065–69. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.2065.

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Guangxi the Yulin Tieshan'gang Expressway Bridge Grouting roadbed practice, describes a chemical grouting of construction methods to prevent highway traffic bridgehead depression after jumping disease, cone penetration test by heavy cone momentum before and after grouting Deflection detection method for testing the effects of the project, validation of the technology for the new road bridge (culvert) abutment soil reinforcement pretreatment oil with good results, can significantly improve the bearing capacity of foundation.
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Yao, Zhishu, Mingkai Liu, Xiaojian Wang, Bin Tang, and Weipei Xue. "Deflection Mechanism and Treatment Technology of Permanent Derrick of Freeze Sinking on Deep Alluvium." Advances in Civil Engineering 2019 (February 3, 2019): 1–10. http://dx.doi.org/10.1155/2019/1362628.

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Aiming at the problems of deflection and operation safety of permanent derrick of freeze sinking shafts, the mechanism analysis of uneven settling of the derrick foundations in frost-thawed soil was conducted. In addition, research on ground stabilization and derrick deviation rectification technologies was also studied in this paper based on the engineering practice of derrick of auxiliary shaft in the Dingji Coal Mine. Firstly, since the soil texture and artificial freeze temperature field are uneven, the bearing capacity and compression modulus of soil mass decrease after freeze thawing, resulting in uneven settlement of the foundation soil of the derrick footing and causing the deflection of the derrick. The finite element numerical analysis indicates that, in the event of uneven settling, the greatest tensile stress in the derrick structure of Dingji auxiliary shaft increased by 39.83% and the largest pressure stress increased by 33.33%. Secondly, this study used sleeve valve pipe single-fluid static pressure grouting technology to reinforce the foundation of the derrick footing. The reinforced depth of grouting is 32 m, and every derrick foundation has adopted three circles of grouting holes for grouting reinforcement. Meanwhile, the hydraulic synchronous jacking system was used to rectify the deviation of the derrick, restoring the centre line of derrick ascension to the original design state. Finally, the practice of grouting, foundation consolidation, and derrick deviation rectification projects of the Dingji auxiliary shaft suggest that, after grouting reinforcement, the rate of foundation settlement is gradually decreased and tends to be stable. This has resulted in uniform settlement, and through four basic jacking, the deflection of the derrick has been corrected to its initial design state.
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Дисертації з теми "Grouting (Soil stabilization) Testing"

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Boxill, Lois E. C. "Foundation remediation of existing structures using ground densification methods." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/21792.

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Adsero, Matthew E. "Effect of jet grouting on the lateral resistance of soil surrounding driven-pile foundations /." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2381.pdf.

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Denham, Martha H. "The Use of Laboratory Testing to Understand the Behavior of Collapsible Soil Upon Wetting." PDXScholar, 1992. https://pdxscholar.library.pdx.edu/open_access_etds/4664.

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In developing a constitutive model that could predict the settlement due to the collapse, several goals needed to be met. These were to gain an understanding of the collapse phenomenon, knowing the soil properties at the natural water content and how they change after collapse, and develop and test the new model. It was felt that laboratory testing could be of use. The types of test conducted included use of the Oedometer, Pressuremeter, and Triaxial tests. The material that was used for the testing was a "generic" soil manufactured out of diatomite. In all of the tests the soil was tested dry and saturated in order to establish state limits of the soil. Next, the soil was loaded dry then inundated which initiated the collapse of the soil. The stress and strains were continually recorded. From the testing it was concluded that there is a stress-strain region where after collapse the soil looses considerable strength. With increasing stress and strain the soil eventually becomes stronger. From the triaxial tests, the stress-strain data from this "region of collapse" was used in a constitutive model. Stress paths from the Oedometer and Pressuremeter tests were then successfully applied to the model. The constitutive model used was an elasto plastic model. The elastic and plastic strain components were provided using functions for yielding, hardening, plastic potential, and failure as proposed by Paul Lade in his work on cohesionless, frictional materials. Results from the conventional triaxial shear tests and isotropic compression tests were used to derive the values of the functions for the model. The end result was three dimensional surfaces for failure, yielding, plastic work and plastic potential for the dry and saturated soil in the zone of collapse.
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Troost, Jan J. "Factors influencing laboratory vibratory compaction." Master's thesis, University of Cape Town, 1987. http://hdl.handle.net/11427/17651.

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Includes bibliography.
The thesis consists of a literature review and a limited experimental investigation in a soils laboratory. The objective of the literature review is to determine what standard laboratory test methods based on vibration exist for the control of compaction, to what soil types these tests are applicable and what the factors are which affect laboratory vibratory compaction. The study revealed that extensive research has been carried out in the USA and Europe, where standard laboratory compaction tests exist for the determination of the maximum dry density of cohesionless, free-draining soil. The US methods are based on the use of a vibratory table, while the European practice is based on the use of a vibratory tamper. No standard tests appear to exist for soil exhibiting cohesion, though limited research has been carried out in the USA into the behaviour of such soils under laboratory vibratory compaction. The factors; frequency, amplitude, mould size and shape surcharge intensity and manner of application, soil type, time of vibration, number of layers and moisture content are all reported to have an effect on the maximum dry density achievable. It has been recognised that significant interaction occurs between the factors affecting vibratory compaction, but the extent of the interaction appears to be only partly understood. The objective of the limited experimental program was to determine whether a specific graded crushed stone could be compacted to Modified AASHTO maximum dry density with a laboratory vibratory compaction technique using a vibratory table, and how this could best be achieved. The effects on dry density of changing the frequency, the time of vibration, mould size, surcharge pressure, grading and moisture content were investigated. It is concluded that the graded crushed stone in question can be compacted to Mod. AASHTO maximum dry density but that before reliable reproducible results can be achieved with this type of test further work is necessary. Such research should be aimed at investigating the interaction effect between the amplitude of vibration, the soil type and the type and intensity of the applied surcharge pressure.
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Junaideen, Sainulabdeen Mohamed. "The design and performance of a pressure chamber for testing soil nails in loose fill." Thesis, Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23273331.

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Cambi, Lorenzo. "Soil self-healing assessment through EMM-ARM testing: Pilot simulation and experiments with healing induced by epoxy resin." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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This paper presents details of an experimental and numerical research undertaken on the fracture and self-healing of cementitious materials to employ in soil stabilization. Thanks to the collaboration between the University of Bologna and University of Minho this study progressed both numerically and experimentally. The experimental portion of the thesis includes a comprehensive series of tests on lime mortar and simulated stabilized soil specimens, healed with epoxy resin. The development of the self-healing experimental procedure is presented and illustrates the results of a series of three point bending tests. The numerical component of this paper describes the work performed on modelling software in order to compare analytical outputs to experimental data. The purpose of this study is to examine the evolution of the elastic modulus characterizing several sets of specimens under three different conditions: uncracked, cracked and healed. The evaluation of parameters has been done using the Elasticity Modulus Measurement through Ambient Response Method (EMM–ARM); it permitted to monitor frequencies and modulus of elasticity for all the specimens realized during the experimentation phase.
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Brandon, Joseph Robert. "Constitutive relationships for agricultural soils." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/101160.

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Undrained triaxial tests were conducted to develop the constitutive relationships for two agricultural soils, which could be used for the finite element analysis of multipass effects of vehicles on soil compaction. Sandy-clay and sandy-silt samples were loaded and unloaded three times to levels of 138 kPa to simulate three passes of an agricultural tractor. An axial loading rate of 200 mm/min was used to include the dynamic effects of rapid loading from the vehicles. An Instron Universal Testing Machine was used to provide this loading rate. During the tests, a microcomputer based data acquisition system recorded axial force and strain. The system recorded 28 values per second. Tests were conducted at four confining pressures; 17.2, 24.1, 34.4 and 41.4 kPa. Plots for deviatoric stress and axial strain were found to be bilinear. Initial and latter portions of the curve were assumed to represent the elastic and plastic deformations of the sample, respectively. Assuming an associated flow rule, an elastic-plastic constitutive model was developed based on a Mohr-Coulomb failure surface. The constitutive model developed was evaluated by simulating a triaxial test at a confining pressure of 28 kPa. Initial conditions were computed by substituting the boundary stresses into the model to determine the elastic-plastic matrix. Incremental loads were applied up to the maximum stress level. For each increment of load, the elastic-plastic matrix was updated from the previous load application. The simulated data compared fairly well with experimental results, but tended to overpredict at higher stress levels. Based on a comparison with existing elastic-plastic models, the derived model appears to be well suited for substitution into the finite element method for studying soil compaction resulting from multipass effects of tractors.
M.S.
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Šrámek, Jiří. "Stavebně technologický projekt výrobní a administrativní haly ATX." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392191.

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The subject of this master’s thesis is a solution of chosen parts of building construction project. The project solves industrial hall that contains productions and administrative space. This thesis includes technological regulations for substructure, study of performing the main technological stages, design of using machines, checking and testing plans. Other phrases parts are time schedules, budget, calculations, design of site equipment including engineering report and report for performing access road. Starting materials, which were used for this thesis, were engineering report also including working drawings.
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Eweg, Jonathan Lindsay. "The design and testing of soil pressure sensors for in-field agricultural and forestry traffic." Thesis, 2005. http://hdl.handle.net/10413/2692.

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River stage or flow rates are required for the design and evaluation of hydraulic structures. Most river reaches are ungauged and a methodology is needed to estimate the stages, or rates of flow, at specific locations in streams where no measurements are available. Flood routing techniques are utilised to estimate the stages, or rates of flow, in order to predict flood wave propagation along river reaches. Models can be developed for gauged catchments and their parameters related to physical characteristics such as slope, reach width, reach length so that the approach can be applied to ungauged catchments in the region. The objective of this study is to assess Muskingum-based methods for flow routing ill ungauged river reaches, both with and without lateral inflows. Using observed data, the model parameters were calibrated to assess performance of the Muskingum flood routing procedures and the Muskingum-Cunge method was then assessed using catchment derived parameters for use in ungauged river reaches. The Muskingum parameters were derived from empirically estimated variables and variables estimated from assumed river cross-sections within the selected river reaches used. Three sub-catchments in the Thukela catchment in KwaZulu-Natal, South Africa were selected for analyses, with river lengths of 4, 21 and 54 km. The slopes of the river reaches and reach lengths were derived from a digital elevation model. Manning roughness coefficients were estimated from field observations. Flow variables such as velocity, hydraulic radius, wetted perimeters, flow depth and top flow width were determined from empirical equations and cross-sections of the selected rivers. Lateral inflows to long river reaches were estimated from the Saint-Venant equation. Observed events were extracted for each sub-catchment to assess the Muskingum-Cunge parameter estimation method and Three-parameter Muskingum method. The extracted events were further analysed using empirically estimated flow variables. The performances of the methods were evaluated by comparing both graphically and statistically the simulated and observed hydrographs. Sensitivity analyses were undertaken using three selected events and a 50% variation in selected input variables was used to identify sensitive variablesThe performance of the calibrated Muskingum-Cunge flood routing method using observed hydrographs displayed acceptable results. Therefore, the Muskingum-Cunge flood routing method was applied in ungauged catchments, with variables estimated empirically. The results obtained shows that the computed outflow hydrographs generated using the Muskingum-Cunge method, with the empirically estimated variables and variables estimated from cross-sections of the selected rivers resulted in reasonably accurate computed outflow hydrographs with respect to peak discharge, timing of peak flow and volume. From this study, it is concluded that the Muskingum-Cunge method can be applied to route floods in ungauged catchments in the Thukela catchment and it is postulated that the method can be used to route floods in other ungauged rivers in South Africa.
Thesis (M.Sc.)-University of KwaZulu-Natal, Durban, 2005.
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Книги з теми "Grouting (Soil stabilization) Testing"

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(Japan), Doboku Kenkyūjo. Dosha jiban o taishō to shita kōtairyoku ankā no kaihatsu ni kansuru kenkyū. Tsukuba-shi: Doboku Kenkyūjo, 2009.

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Geo-Logan, '97 Conference ((1997 Logan Utah). Grouting: Compaction, remediation, and testing : proceedings of sessions sponsored by the Grouting Committee of the Geo-Institute of the American Society of Civil Engineers in conjuction with the Geo-Logan '97 Conference, Logan, Utah, July 16-18, 1997. New York, N.Y: American Society of Civil Engineers, 1997.

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3

H, Karol R. Chemical grouting and soil stabilization. 3rd ed. New York: M. Dekker, 2003.

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4

Kutzner, Christian. Grouting of rock and soil. Rotterdam: A.A. Balkema, 1996.

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5

P, Moseley M., and Kirsch Klaus, eds. Ground improvement. 2nd ed. New York, NY: Spon Press, 2004.

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Geo-Denver 2000 (2000 Denver, Colo.). Advances in grouting and ground modification: Proceedings of sessions of Geo-Denver 2000 : August 5-8, 2000, Denver, Colorado. Reston, VA: American Society of Civil Engineers, 2000.

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P, Moseley M., ed. Ground improvement. Bishopbriggs, Glasgow: Blackie Academic & Professional, 1993.

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8

Jonathan, Cheng S. C., ed. Geosynthetic soil reinforcement testing procedures. Philadelphia, PA: ASTM, 1993.

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9

American Society for Testing and Materials. ASTM standards on soil stabilization with admixtures. Philadelphia, PA: ASTM, 1990.

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10

American Society for Testing and Materials. ASTM standards on soil stabilization with admixtures. 2nd ed. Philadelphia, PA: ASTM, 1992.

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Частини книг з теми "Grouting (Soil stabilization) Testing"

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Winterkorn, Hans F., and Sibel Pamukcu. "Soil Stabilization and Grouting." In Foundation Engineering Handbook, 317–78. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3928-5_9.

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Khan, M. S., M. Sahadat Hossain, M. A. Khan, and Mohammad Faysal. "Performance of Recycled Plastic Pin (RPP) for Slope Stabilization." In Soil Testing, Soil Stability and Ground Improvement, 136–48. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61902-6_12.

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Gross, Dennis, Susanne Kytzia, and Armin Roduner. "Comparison of the CO2 Record of Different Slope Stabilization Methods." In Soil Testing, Soil Stability and Ground Improvement, 69–78. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61902-6_7.

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Murthy, Godavarthi V. L. N., Atkuri Venkata Krishna, and Vedula V. N. Prabhakara Rao. "An Experimental Study on Partial Replacement of Clayey Soil with an Industrial Effluent: Stabilization of Soil Subgrade." In Soil Testing, Soil Stability and Ground Improvement, 337–48. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61902-6_26.

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Farias, Rideci, Haroldo Paranhos, Jovino Rachid Araújo, Leonardo Ramalho Sales, and Roberto Pimentel. "Geotechnical Investigations and Proposal for Stabilization and Recovery Slope on Highway BR-010 Stretch in Aparecida do Rio Negro to Goiatins, Tocantins, Brazil." In Soil Testing, Soil Stability and Ground Improvement, 393–407. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61902-6_32.

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Farias, Rideci, Haroldo Paranhos, Jovino Rachid Araújo, Leonardo Ramalho Sales, and Roberto Pimentel. "Erratum to: Geotechnical Investigations and Proposal for Stabilization and Recovery Slope on Highway BR-010 Stretch in Aparecida do Rio Negro to Goiatins, Tocantins, Brazil." In Soil Testing, Soil Stability and Ground Improvement, E1. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-61902-6_33.

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Kavak, Aydin, Gamze Bilgen, and Omer Faruk Capar. "Using Ground Granulated Blast Furnace Slag with Seawater as Soil Additives in Lime-Clay Stabilization." In Testing and Specification of Recycled Materials for Sustainable Geotechnical Construction, 481–97. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2011. http://dx.doi.org/10.1520/stp49485t.

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Kavak, Aydin, Gamze Bilgen, and Omer Faruk Capar. "Using Ground Granulated Blast Furnace Slag with Seawater as Soil Additives in Lime-Clay Stabilization." In Testing and Specification of Recycled Materials for Sustainable Geotechnical Construction, 481–97. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2011. http://dx.doi.org/10.1520/stp154020120024.

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Karol, Reuben H. "Grouting Technology." In Chemical Grouting and Soil Stabilization, 251–89. CRC Press, 2003. http://dx.doi.org/10.4324/9780429213830-13.

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Karol, Reuben H. "Grouting Theory." In Chemical Grouting and Soil Stabilization, 243–50. CRC Press, 2003. http://dx.doi.org/10.4324/9780429213830-12.

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Тези доповідей конференцій з теми "Grouting (Soil stabilization) Testing"

1

Meyers, John, Tim Myers, and Kerry Petrasic. "Jet Grout Stabilization of Steeply Excavated Soil Slope." In Third International Conference on Grouting and Ground Treatment. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40663(2003)109.

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Druss, David L. "Guidelines for Design and Installation of Soil-Cement Stabilization." In Third International Conference on Grouting and Ground Treatment. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40663(2003)26.

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Kannan, Ramanuja Chari. "Combined Use of Grouting and Soil Stabilization in Sinkhole Remediation." In Ninth Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40698(2003)58.

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Ho, Chu Eu, and Chin Gee Tan. "Stabilization of Deep Open Excavations in Soft Soil by Jet Grouting." In Third International Conference on Grouting and Ground Treatment. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40663(2003)105.

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Bahrekazemi, Mehdi, and Anders Bodare. "Effects of Lime-Cement Soil Stabilization against Train Induced Ground Vibrations." In Third International Conference on Grouting and Ground Treatment. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40663(2003)29.

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Azizian, Ali, Brian E. Hall, Juan I. Baez, Alan Moat, and Blair Squire. "Construction and Verification Testing of Cement Deep Soil Mix Panels to Mitigate Seismic Displacements for the Evergreen Line Rapid Transit Project." In Grouting 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480809.024.

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Gallagher, Patricia M., and Alyssa J. Koch. "Model Testing of Passive Site Stabilization: A New Grouting Technique." In Third International Conference on Grouting and Ground Treatment. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40663(2003)125.

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Chuaqui, M., and R. P. Traylor. "Soil Stabilization Grouting under a Railway-for-Micro-Tunneling for a Sewer Crossing." In Third International Conference on Grouting and Ground Treatment. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40663(2003)94.

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Lewis, Dwayne A., and Martin G. Taube. "North Airfield Drainage Improvement at Chicago-O'Hare International Airport: Soil Stabilization Using Jet Grouting." In Third International Conference on Grouting and Ground Treatment. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40663(2003)121.

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Chuaqui, Marcelo, Frank Hu, Naresh Gurpersaud, and Daniel Lees. "A Case Study: Two-fluid Jet Grouting for Tunneling Application - Soil stabilization and Permeability Reduction." In Proceedings of the Fourth International Conference on Grouting and Deep Mixing. Reston, VA: American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412350.0070.

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Звіти організацій з теми "Grouting (Soil stabilization) Testing"

1

Al-Chaar, Ghassan, Peter Stynoski, Kaushik Sankar, Marion Banko, Waltraud Kriven, and Imad Al-Qadi. Development and testing of geopolymers for soil stabilization on military installations. Construction Engineering Research Laboratory (U.S.), May 2017. http://dx.doi.org/10.21079/11681/22553.

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Behnood, Ali, and Jan Olek. Development of Subgrade Stabilization and Slab Undersealing Solutions for PCC Pavements Restoration and Repairs. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317128.

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Анотація:
The loss of functionality and the development of distress in concrete pavements is often attributable to the poor subbase and subgrade conditions and/or loss of support due to the development of the voids underneath the slab. Subgrade soil stabilization can be used as an effective approach to restore the functionality of the subgrades in patching projects. This research had two main objectives: (1) identifying the best practices for soil stabilization of the existing subgrade during pavement patching operations and (2) identifying and developing new, modified grouting materials for slab stabilization and undersealing. Various stabilization scenarios were tested and showed improved performance of the subgrade layer. The use of geotextile along with aggregate course was found to significantly reduce the settlement. Non-removable flowable fill was also found to significantly reduce the subgrade settlement. Cement-treated aggregate and lean concrete provided the best performance, as they prevented formation of any noticeable settlement in the underlying subgrade.
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Chefetz, Benny, Baoshan Xing, Leor Eshed-Williams, Tamara Polubesova, and Jason Unrine. DOM affected behavior of manufactured nanoparticles in soil-plant system. United States Department of Agriculture, January 2016. http://dx.doi.org/10.32747/2016.7604286.bard.

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The overall goal of this project was to elucidate the role of dissolved organic matter (DOM) in soil retention, bioavailability and plant uptake of silver and cerium oxide NPs. The environmental risks of manufactured nanoparticles (NPs) are attracting increasing attention from both industrial and scientific communities. These NPs have shown to be taken-up, translocated and bio- accumulated in plant edible parts. However, very little is known about the behavior of NPs in soil-plant system as affected by dissolved organic matter (DOM). Thus DOM effect on NPs behavior is critical to assessing the environmental fate and risks related to NP exposure. Carbon-based nanomaterials embedded with metal NPs demonstrate a great potential to serve as catalyst and disinfectors. Hence, synthesis of novel carbon-based nanocomposites and testing them in the environmentally relevant conditions (particularly in the DOM presence) is important for their implementation in water purification. Sorption of DOM on Ag-Ag₂S NPs, CeO₂ NPs and synthesized Ag-Fe₃O₄-carbon nanotubebifunctional composite has been studied. High DOM concentration (50mg/L) decreased the adsorptive and catalytic efficiencies of all synthesized NPs. Recyclable Ag-Fe₃O₄-carbon nanotube composite exhibited excellent catalytic and anti-bacterial action, providing complete reduction of common pollutants and inactivating gram-negative and gram-positive bacteria at environmentally relevant DOM concentrations (5-10 mg/L). Our composite material may be suitable for water purification ranging from natural to the industrial waste effluents. We also examined the role of maize (Zeamays L.)-derived root exudates (a form of DOM) and their components on the aggregation and dissolution of CuONPs in the rhizosphere. Root exudates (RE) significantly inhibited the aggregation of CuONPs regardless of ionic strength and electrolyte type. With RE, the critical coagulation concentration of CuONPs in NaCl shifted from 30 to 125 mM and the value in CaCl₂ shifted from 4 to 20 mM. This inhibition was correlated with molecular weight (MW) of RE fractions. Higher MW fraction (> 10 kDa) reduced the aggregation most. RE also significantly promoted the dissolution of CuONPs and lower MW fraction (< 3 kDa) RE mainly contributed to this process. Also, Cu accumulation in plant root tissues was significantly enhanced by RE. This study provides useful insights into the interactions between RE and CuONPs, which is of significance for the safe use of CuONPs-based antimicrobial products in agricultural production. Wheat root exudates (RE) had high reducing ability to convert Ag+ to nAg under light exposure. Photo-induced reduction of Ag+ to nAg in pristine RE was mainly attributed to the 0-3 kDa fraction. Quantification of the silver species change over time suggested that Cl⁻ played an important role in photoconversion of Ag+ to nAg through the formation and redox cycling of photoreactiveAgCl. Potential electron donors for the photoreduction of Ag+ were identified to be reducing sugars and organic acids of low MW. Meanwhile, the stabilization of the formed particles was controlled by both low (0-3 kDa) and high (>3 kDa) MW molecules. This work provides new information for the formation mechanism of metal nanoparticles mediated by RE, which may further our understanding of the biogeochemical cycling and toxicity of heavy metal ions in agricultural and environmental systems. Copper sulfide nanoparticles (CuSNPs) at 1:1 and 1:4 ratios of Cu and S were synthesized, and their respective antifungal efficacy was evaluated against the pathogenic activity of Gibberellafujikuroi(Bakanae disease) in rice (Oryza sativa). In a 2-d in vitro study, CuS decreased G. fujikuroiColony- Forming Units (CFU) compared to controls. In a greenhouse study, treating with CuSNPs at 50 mg/L at the seed stage significantly decreased disease incidence on rice while the commercial Cu-based pesticide Kocide 3000 had no impact on disease. Foliar-applied CuONPs and CuS (1:1) NPs decreased disease incidence by 30.0 and 32.5%, respectively, which outperformed CuS (1:4) NPs (15%) and Kocide 3000 (12.5%). CuS (1:4) NPs also modulated the shoot salicylic acid (SA) and Jasmonic acid (JA) production to enhance the plant defense mechanisms against G. fujikuroiinfection. These results are useful for improving the delivery efficiency of agrichemicals via nano-enabled strategies while minimizing their environmental impact, and advance our understanding of the defense mechanisms triggered by the NPs presence in plants.
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