Готові списки джерел за темами / Fly Ash-lime

Добірка наукової літератури з теми "Fly Ash-lime"

Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Fly Ash-lime"

1

Wu, Xiang Hao, Li Zhen Bai, Cong Kai Zhang, and Pan Yuan. "Influence of Lime Dust on the Pore Structure and Strength of Fly Ash-Cement Paste." Applied Mechanics and Materials 99-100 (September 2011): 739–44. http://dx.doi.org/10.4028/www.scientific.net/amm.99-100.739.

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By evaporable water test and compressive strength test, this paper studies on the influence of lime dust on pore structure and compressive strength of fly ash-cement paste. The test results show that: 1) With the volume of lime dust as cement replacement increasing, porosity and big pore to total volume ratio of fly ash-cement paste are gradually raising .However, with the volume of lime dust as fly ash replacement increasing, porosity of fly ash-cement paste decreases gradually, while big pore to total volume ratio firstly increases, and then decreases. 2) Substituting lime dust for isometric cement, compressive strength of fly ash-cement paste containing over 5% lime dust reduces gradually when the proportion of lime dust replacing cement raises. Whereas, substituting lime dust for isometric fly ash, the influence of lime dust content on compressive strength of fly ash-cement paste within less than 6% lime dust is not obvious. But When lime dust content is 9%, the compression strength of fly ash-cement paste increases by 20.0% around.
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2

Wu, Xiang Hao, Yong Xin Yao, Xing Wei Yin, and Pan Yuan. "Influence of Adding Lime Dust on Compressive Strength and Frost Resistance of Fly Ash Recycled Concrete." Advanced Materials Research 671-674 (March 2013): 1813–16. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.1813.

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Анотація:
The influence of part of fly ash replaced with lime dust on fly ash recycle concrete compressive strength and frost resistance is investigated by compression tests and rapid frost-thawing test. The experimental results show that part of fly ash replaced with lime dust will reduce the early compressive strength of the fly ash recycled concrete; the right amount of lime dust replacing fly ash can raise the latter compressive strength of fly ash recycled concrete, the best replacement proportion is 10%. The anti-frozen capacity of fly ash recycled concrete will reduce by replacing part of fly ash with lime dust, and the amplitude reduction of anti-frozen capacity of fly ash recycled concrete in seawater is greater than the amplitude reduction in sulfate solution and in freshwater.
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3

Wu, Xiang Hao, Shan Shan Yang, Cong Kai Zhang, and Pan Yuan. "Influence of Lime Dust on Chloride Binding Capacity of Fly Ash-Cement Paste." Advanced Materials Research 399-401 (November 2011): 1191–95. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.1191.

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The influence of the way and the volume of adding lime dust to fly ash-cement pastes on chloride physical adsorption capacity, chemical combination capacity and binding capacity of fly ash-cement pastes is investigated by adsorption equilibrium method. The results show that with the volume of lime dust as cement replacement raising, the amount of chloride physically adsorbed by fly ash-cement pastes reduces, while the amount of chloride chemical combining is firstly increase, and then decrease, and it reaches the maximum when the lime dust content is 10% , that of chloride binding is firstly increase, and then decrease, which reaches the maximum when the lime dust content is 5%. In addition, with the volume of lime dust as fly ash replacement increasing , the volume of chloride physically adsorbed by fly ash-cement pastes reduces firstly, and then raises, reaching the minimum when the lime dust content is 6%. Whereas, volume of chloride chemical combining and binding both decrease gradually with the increase of lime dust contents. When the population of lime dust as cement or fly ash replacement is low(less than 15% for cement and 9% for fly ash), effect of lime dust content on chloride binding capacity of fly ash-cement pastes is not obvious (under 7.5%).
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4

Zhang, Hu Zhu, and Yan Hong Zhao. "A Study on Anti-Cracking Performance of Lime and Fly-Ash Stabilized Coal Gangue Roadbase Materials." Applied Mechanics and Materials 638-640 (September 2014): 1113–16. http://dx.doi.org/10.4028/www.scientific.net/amm.638-640.1113.

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In order to determine the mix proportion with better anti-cracking performance of lime and fly-ash stabilized coal gangue roadbase materials, anti-cracking performance of lime and fly-ash stabilized coal gangue influenced by quality ratio of lime to fly-ash was studied based on the same aggregate gradation and the same aggregate ratio. And then crack of test road with different mix proportion was observed. Results show that both temperature shrinkage anti-cracking coefficient and drying shrinkage anti-cracking coefficient vary along parabola rule with the decrease of the quality ratio of lime to fly-ash. The mixture have the best anti-cracking performance when the quality ratio of lime to fly-ash is 5:15, which was test and verify in the transverse crack observations of test road. Lime and fly-ash stabilized coal gangue roadbase materials have a good anti-cracking performance and suitable for base in the pavement structure. The reasonable ratio of lime and fly-ash stabilized coal gangue roadbase materials in the engineering should be 5:15:80.
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5

Xue, Wen, Xiang Ping Han, Zhi Guo Xia, and Qi Zheng. "Impacts of Gradation on the Property of Lime-Fly Ash Bound Macadam." Applied Mechanics and Materials 178-181 (May 2012): 1321–24. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.1321.

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This paper studied the lime-fly ash bound macadam mixed with different proportions of lime fly-ash and aggregates which is often used in construction projects, analyzed the impacts of the aggregate content to the unconfined compressive strength, modulus of compressive resilience property with various lime content and is showed that dense skeleton lime-fly ash bound macadam reached the desirable strength property and had good effect on pavement performance Therefore, it is concluded that lime-fly ash bound macadam with desirable property, replacing fine aggregates is achievable, Test results show that coarse aggregate of lime fly-ash stabilized aggregate can form skeleton structure and has the advantage of high strength and other better material properties which can meet the requirements pavement.
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6

Zhou, Cheng, Jian-Hua Yin, and Jing-Ping Ming. "Bearing capacity and settlement of weak fly ash ground improved using lime – fly ash or stone columns." Canadian Geotechnical Journal 39, no. 3 (June 1, 2002): 585–96. http://dx.doi.org/10.1139/t02-011.

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An experimental study was conducted to evaluate the suitability of lime for the improvement of weak fly ash ground. In the study, a series of unconfined and confined compression tests were carried out on cylindrical samples in the laboratory and on cubic samples in the field, of Lime-FA (lime – fly ash) mixtures with various mixing contents of lime and curing times. Some samples were compressed under a soaking condition with water. A series of full-scale physical tests in the field and small-scale physical tests in the laboratory were conducted on a foundation (or rigid plate) on weak fly ash ground improved using Lime-FA or stone columns, which form a composite foundation. Some physical tests were carried out under a soaking condition. From the test and physical model study, it was found that the Lime-FA mixture has a larger shear strength than that of fly ash when the mixing content of lime is larger than 10%. When the weak fly ash ground is improved with Lime-FA columns, the bearing capacity of the fly ash ground is increased, and the settlement is reduced largely. However, when the ground is soaked under water, the corresponding shear strength of the Lime-FA mixture is decreased, the bearing capacity of the Lime-FA composite ground is decreased, and the settlement is increased. A plate loading test with soaking test on a layer of 1.15 m thick fly ash was also done in the laboratory. The test results show that the top fly ash layer is not suitable as a foundation soil layer and should be replaced with other granular soils, rather than simply compacted to a higher density, due to the negative impact of soaking. Results from the test program are presented and discussed.Key words: fly ash, lime, unconfined compressive strength, shear strength, bearing capacity, settlement, soaking.
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7

Zhang, Zhiquan, and Yufen Zhang. "Test Study on Strength and Permeability Properties of Lime-Fly Ash Loess under Freeze-Thaw Cycles." Open Civil Engineering Journal 8, no. 1 (September 4, 2014): 172–76. http://dx.doi.org/10.2174/1874149501408010172.

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In order to study the application of lime-fly ash loess in permafrost subgrade engineering, uniaxial compressive test, fast direct shearing test and permeability tests were carried out on lime-fly ash loess under different curing ages and freeze-thaw cycles. Uniaxial compressive strength of lime-fly ash loess increases slowly with the curing ages, and can reach 3.5 Mpa after the curing ages of 90 days (This strength is called 90d strength). 14d strength of lime-fly ash loess has already reached 50% of 90d strength; later strength including 28d strength and 90d strength is basically stable under different freeze-thaw cycles, so lime-fly ash loess has good water stability and freeze-thaw stability. Fast direct shear strength decreases with the number of freeze-thaw cycles without consideration of moisture content; the coefficient of permeability increases with the number of freeze-thaw cycles．All test data show that lime-fly ash loess with good behaviors can be applied in permafrost subgrade engineering.
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8

Latifee, Enamur R. "State-of-the-Art Report on Alkali Silica Reactivity Mitigation Effectiveness Using Different Types of Fly Ashes." Journal of Materials 2016 (September 27, 2016): 1–7. http://dx.doi.org/10.1155/2016/7871206.

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Use of fly ash by percent replacement of cement is considered as one of the most economical and effective methods for mitigating alkali-silica reaction (ASR) related distress in the concrete. However, fly ash has been proven to be somewhat variable in its effectiveness in inhibiting alkali-silica reactivity, principally because its composition depends on the coal properties from which it is derived. Typically class C fly ashes are not as efficient as class F ashes due to their higher calcium oxide content. Nevertheless, it is important to find out whether the lime content in the fly ash has linear effect on ASR distress mitigation and if the dosage of fly ash is more influential than type of fly ash. This research conducted extensive testing with nine different types of fly ashes with three in each category of fly ashes, class C, class F, and intermediate class. The results indicated that the effect of increased dosage of fly ash on ASR mitigation is linear for both low-lime and high-lime fly ashes and the dosage effect is more significant with rapid effect with high-lime fly ashes compared to low-lime fly ashes.
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9

Bai, Shun Guo, and Yong Feng Hou. "Study on Properties of Cement Lime-Fly-Ash Soil." Key Engineering Materials 302-303 (January 2006): 457–61. http://dx.doi.org/10.4028/www.scientific.net/kem.302-303.457.

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In recent years, with the extensive application of deep mixing method in reinforcing the soft clay, study on the basic properties of cement-soil has been conducted deeply. In order to improve economic benefits and social benefit of the deep mixing method, this paper focuses on strength and permeability of cement-soil incorporating both lime and fly ash through laboratory experiments. According to the experimental data, the properties of cement lime-fly-ash soil are compared with those of ordinary cement-soil. The results show that cement lime-fly-ash soil is better than ordinary cement-soil. And some valuable conclusions are drawn based on experimental data. Firstly, the fly ash and lime mixed can raise strength remarkably. Secondly, the fly ash and lime mixed can improve impermeability of cement-soil effectually, especially when cement mixing ratio is very low. Thirdly, adding only fly ash into cement-soil can have adverse effects on the impermeability of cement-soil. In addition, the equivalent cement mixing amount of cement lime-fly-ash soil is identified through experimental data. These conclusions are valuable to engineering design and construction.
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10

Moghal, Arif Ali Baig, Ateekh Ur Rehman, K. Venkata Vydehi, and Usama Umer. "Sustainable Perspective of Low-Lime Stabilized Fly Ashes for Geotechnical Applications: PROMETHEE-Based Optimization Approach." Sustainability 12, no. 16 (August 17, 2020): 6649. http://dx.doi.org/10.3390/su12166649.

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In the present scenario of global green environmental and sustainable management, the disposal of large volumes of coal-based ashes (fly ashes) generate significant environmental stress. The aim is to exploit these fly ashes for bulk civil engineering applications to solve societal-environmental issues employing sustainable measures. In this study, the addition of lime and/or gypsum in improving the geotechnical properties (hydraulic conductivity, compressibility, unconfined compression strength, lime leachability, and California bearing ratio) of fly ashes was investigated. To assist the practicing engineers in selecting the right mix of lime and/or gypsum for a given amount of fly ash for a specific application, a multi-criteria approach was adopted. The possible alternatives investigated included untreated fly ash, fly ash treated with lime (1%, 2.5%, 5%, or 10%), and a variation in gypsum dosage (1% or 2.5%) in the presence of lime. Sensitivity analysis was performed to recognize and resolve the conflicting advantages and disadvantages when mixing lime and gypsum. The study revealed that to derive the potential benefits of fly ash, it is essential to combine the lime dosage with gypsum for pavement and liner applications where bulk quantities of fly ash are employed.
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Дисертації з теми "Fly Ash-lime"

1

Liu, Chunhe. "Pathogen inactivation in biosolids with lime and fly ash addition." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0028/MQ51743.pdf.

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2

Shnorhokian, Shahé. "Immobilization of heavy metals in lime-fly ash cementitious binders." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23937.

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Acid mine drainage (AMD) is one of the largest problems facing the mining of base metals in Canada today. It results in the leaching of toxic heavy metals from waste rocks and tailings into the environment. Solidification/stabilization is a process whereby hazardous wastes are chemically stabilized and their handling properties improved. The objective of the project was to stabilize two tailings obtained from base metal mines in Quebec by adding varying proportions of lime and fly ash to them. The fixing capabilities of the two additives were tested by a modified Toxicity Characteristic Leaching Procedure (TCLP) test after 1, 14 and 35 days of curing. Mineralogical changes were monitored by the x-ray diffraction (XRD) analysis of 6 selected samples.
Results indicated the capability of lime-fly ash binders in the immobilization of heavy metals. XRD analysis showed the formation of gypsum and the gradual decline in pyrite content in most of the samples. The mineral ettringite was not detected, probably due to the relatively low pH of the samples and a deficiency in reactive aluminum. Hence, the results suggest the existence of other phases, possibly amorphous calcium silicates, which were responsible for the reduction in leachability.
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3

Amiralian, Saeid. "Study on soil stabilisation technique using lime & fly ash." Thesis, Curtin University, 2013. http://hdl.handle.net/20.500.11937/892.

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A series of microanalytical (Optical microscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, and Fourier transform infrared spectroscopy ) and geotechnical (standard compaction , hydraulic conductivity, one-dimensional consolidation, and direct shear) tests used for analysing the effectiveness of lime and fly ash on soil stabilisation from a chemical/elemental and geotechnical viewpoints. The geo-chemical analysis was revealed the creation of chemical components required for the chemical reaction, thereby improving the soil’s geotechnical performance.
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4

Jalali, S. "A study of factors affecting the mechanical behaviour of lime-fly ash mixtures." Thesis, Coventry University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357261.

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5

Chen, Pingan Carleton University Dissertation Engineering Civil and Environmental. "Modelling the effects of lime-fly ash columns installed in soft clays." Ottawa, 1995.

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6

MELIANDE, AMANDA MARIA CHRISPIM. "ANALYSIS OF THE BEHAVIOR OF SOILS MIXTURES WITH MINERAL COAL FLY ASH AND LIME." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24611@1.

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Анотація:
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
PROGRAMA DE EXCELENCIA ACADEMICA
Este estudo apresenta o comportamento de misturas de areia e solo argiloso com teores variados de cinza volante, proveniente do processo de queima de carvão mineral no Complexo Termelétrico Jorge Lacerda, localizado no município Capivari de Baixo, no estado de Santa Catarina. O objetivo da presente pesquisa consiste em avaliar a aplicabilidade do uso de misturas solo-cinza e solocinza- cal em obras geotécnicas, como camadas de aterros sanitários, solos de fundação e estabilização de taludes. Foram realizados ensaios de caracterização física, química e mecânica (ensaio de compactação e ensaio de cisalhamento direto). Os ensaios de cisalhamento direto foram realizados em amostras de solo argiloso compactadas na umidade ótima e no peso específico seco máximo correspondente, com teores de cinza volante de 15 por cento e 30 por cento em relação ao peso seco do solo. Já os ensaios em amostras de areia foram realizados para uma densidade relativa de 50 por cento e umidade ótima de 10 por cento, com teores de cinza volante de 15, 30 e 40 por cento em relação ao peso seco do solo. Para as misturas solo-cinza-cal, adicionou-se 3 por cento de cal em substituição ao peso seco da cinza. Foi analisada a influência do tipo de solo, teor de cinza, adição de cal e tempo de cura (0, 30, 100, 125 e 140 dias) para as misturas, sendo a cura adotada somente para as misturas com areia. Os resultados mostraram-se mais satisfatórios para as misturas com solo argiloso, sendo a adição de cal mais eficiente para a mistura com menor teor de cinza. Na ausência de cal, o melhor comportamento obtido foi para a mistura com 15 por cento de cinza. Quanto às misturas com areia e sem cal, os resultados foram inferiores à areia; já no caso das misturas areia-cinza-cal, não foi possível definir um padrão do comportamento com relação ao tempo de cura, pois ainda que tenha havido um aumento da coesão a determinados dias, este ganho veio acompanhado de uma redução no ângulo de atrito, fazendo com que a areia mantivesse um comportamento melhor. Contudo, o teor de 27 por cento de cinza, sob 140 dias de cura, proporcionou ao solo um aumento de ambos os parâmetros, sendo, portanto, o teor ótimo a ser utilizado. Dessa forma, ainda que o emprego da cinza volante em misturas com o solo argiloso tenha se mostrado mais satisfatório, este material também pode ser utilizado em misturas com areia, desde que submetido a elevados períodos de cura e que contenham uma porcentagem de cinza em torno do teor ótimo encontrado, o que viabiliza o emprego positivo deste material em aplicações geotécnicas, possibilitando uma destinação ambientalmente correta deste resíduo e dando um fim mais nobre a este material.
This study presents the behavior of sand and clay soil mixtures with different contents of fly ash, which comes from the coal burning process in Thermoelectric Complex Jorge Lacerda, located in the city of Capivari de Baixo, in Santa Catarina. The aim of this research is to assess the applicability of using soil-ash and soil-ash-lime mixtures in geotechnical works, like landfill layers, foundation soils and slope stabilization. Physical, chemical and mechanical (compaction test and direct shear test) were performed. Direct shear tests were performed on clay soil samples compacted at the optimum moisture content and the corresponding maximum dry specific gravity, with fly ash contents of 15 and 30 per cent, related to the dry weight of soil. Tests on sandy soil samples were performed at the relative density of 50 per cent and optimum humidity of 10 per cent, with fly ash contents of 15, 30 and 40 per cent related to the dry weight of soil. For soil-ash-lime mixtures, it was added 3 per cent of lime to replace the dry weight of ash. It was studied the influence of different parameters: soil type, ash content, lime addition and curing time (0, 30, 100, 125 and 140 days) for the mixtures. Curing process was adopted only for sandy soil mixtures. Results were more suitable for clay soil mixtures, and lime addition was more efficient for the mixture with the lowest ash content, related to 12 per cent. In the absence of lime, the best performance was obtained for the mixture with 15 per cent of ash. For sandy soil mixtures and without lime, the results were inferior to sand; and in the case of soil-ash-lime mixtures, it was not possible to define a pattern of behavior to the curing time, because although there has been an increase in cohesion certain days, this gain was followed by a reduction in friction angle, which has maintained the best performance of sand. However, the ash content of 27 per cent, at 140 days of curing, caused an increase of both parameters, what means that this ash content is the optimum content to be used. Thus, although the use of fly ash in mixtures with clay soil has been more satisfactory, this material can also be used in mixtures with sandy soil, since it contains an ash content around the optimum content found, and since it has been submitted to elevated curing periods, what enables the positive employment of this material in geotechnical applications, providing an environmentally correct disposal of this waste and giving it a noblest destination.
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7

Banasiak, Laura Joan. "The role of a subsurface lime-fly ash barrier in the mitigation of acid sulphate soils." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20050706.121221/index.html.

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8

Garibay, Jose Luis. "Guideline for pulverization of stabilized bases." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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9

Cetiner, Sertan Isik. "Stabilization Of Expansive Soils By Cayirhan Fly Ash And Desulphogypsum." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/1119387/index.pdf.

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Анотація:
Expansive soils are one of the most serious problems which the foundation engineer faces. Several attempts are being made to control the swell-shrink behavior of these soils. One of the most effective and economical methods is to use chemical additives. Fly ash and desulphogypsum, both of which are by-products of coal burning thermal power plants, are accumulating in large quantities all over the world and pose serious environmental problems. In this study, the expansive soil was stabilized using the fly ash and desulphogypsum obtained from Ç
ayirhan Thermal Power Plant. Fly ash and desulphogypsum were added to the expansive soil from 0 to 30 percent. Lime was used to see how efficient fly ash and desulphogypsum on expansive soil stabilization were, and was added to the expansive soil from 0 to 8 percent. The properties obtained were chemical composition, grain size distribution, consistency limits, swelling percentage, and rate of swell. Fly ash, desulphogypsum, and lime added samples were cured for 7 days and 28 days, after which they were subjected to free swell tests. Swelling percentage decreased and rate of swell increased with increasing stabilizer percentage. Curing resulted in further reduction in swelling percentage and further increase in rate of swell. 25 percent and 30 percent fly ash and desulphogypsum additions reduced the swelling percentage to levels comparable to lime stabilization.
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10

Moss, Steven Phillip. "Experimental study for asphalt emulsion treated base." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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Книги з теми "Fly Ash-lime"

1

Fasullo, E. J. Newark International Airport: The lime-cement-fly ash (LCF) pavement story. S.l: s.n, 1987.

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2

Congress, Indian Roads. Guidelines for soil and granular material stabilization using Cement, Lime & Fly Ash. New Delhi: Indian Road Congress, 2010.

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3

Jefts, A. R. Lime, cement, and fly ash stabilized aggregate base airfield pavement: Houston Intercontinental Airport. S.l: s.n, 1987.

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4

Jackson, M. L. Influence of fly ash, topsoil, lime, and rock-P on acid mine drainage from coal refuse. S.l: s.n, 1993.

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5

Jackson, M. Influence of fly ash, topsoil, lime, and rock-P on acid mine drainage from coal refuse. S.l: s.n, 1993.

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6

Wendell, R. R. Utilization of lime-stabilized fly ash scrubber sludge in surface mine reclamation: Results of a preliminary investigation. S.l: s.n, 1992.

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Частини книг з теми "Fly Ash-lime"

1

Crouch, L. K., Sarah Dillon, and Marcus L. Knight. "Tennessee Lime-Fly Ash-Stabilized Base Using a High Loss-on-Ignition Fly Ash." In Lime: Building on the 100-Year Legacy of The ASTM Committee C07, 60–75. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2012. http://dx.doi.org/10.1520/stp104326.

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2

Crouch, L. K., Sarah Dillon, and Marcus L. Knight. "Tennessee Lime-Fly Ash-Stabilized Base Using a High Loss-on-Ignition Fly Ash." In Lime: Building on the 100-Year Legacy of The ASTM Committee C07, 1–16. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2012. http://dx.doi.org/10.1520/stp104326t.

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Bai, Shun Guo, and Yong Feng Hou. "Study on Properties of Cement Lime-Fly-Ash Soil." In Environmental Ecology and Technology of Concrete, 457–61. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-983-0.457.

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Kannur, Bhupati, Hemant S. Chore, and Swati Yede. "Unconfined Compressive Strength of Fly Ash-Soil–lime-Fiber System." In Lecture Notes in Civil Engineering, 581–89. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4739-1_55.

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5

Qi, Zhi-Hong, Xue-Yuan Xu, Mi-Lin Zhu, and Yang Hu. "Unconfined Compressive Strength of Mixture of Phosphogypsum-Fly Ash-Lime-Clay." In Advances in Environmental Geotechnics, 745–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-04460-1_90.

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Roychand, R., J. Li, M. Saberian, S. Kilmartin-Lynch, M. M. Ul Islam, M. Maghfouri, and F. Chen. "Effect of Different Additives on the Compressive Strength of Very High-Volume Fly Ash Cement Composites." In Lecture Notes in Civil Engineering, 313–20. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_32.

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AbstractThe cement industry is responsible for about 5–7% of global greenhouse gas emissions and with the rapid rise in global warming, it is imperative to produce an ecofriendly alternative to Portland cement. Fly ash (FA) is an abundantly available and least utilized industrial byproduct with good pozzolanic properties that can help reduce the carbon footprint of cement composites. We investigated replacing 80% of the cement content with different blends of FA, nanosilica (NS) and silica fume (SF). Hydrated lime and a set accelerator were used to increase the pozzolanic reactivity of the blended cement composites. The portlandite released with 20% cement content was insufficient for the pozzolanic reaction of the blended cement composites containing FA and SF, requiring externally added hydrated lime. The addition of a set accelerator significantly increased the pozzolanic reaction and the resultant compressive strength, and these increased with the increasing content of the set accelerator. The replacement of SF with NS led to a remarkable increase in the pozzolanic reaction. The corresponding compressive strength of FA mixed with cement composites increased with increasing percentage composition of NS.
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Kanoungo, Shristi Khosla, Umesh Sharma, and Abhishek Kanoungo. "Utilization of Waste Lime Sludge and Coal Fly Ash in Construction Industry." In Lecture Notes in Civil Engineering, 281–92. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-51354-2_25.

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Baradan, Bülent, and Theo Schilderman. "14. Lime Stabilized Fly Ash; The Use of Alternative Binders in Rwanda: A case study." In Lime and Other Alternative Cements, 210–28. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1992. http://dx.doi.org/10.3362/9781780442631.014.

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Burra, S. G., P. K. Kolay, V. K. Puri, and S. Kumar. "Strength and Compressibility of Kaolinite Clay Stabilized with Lime Sludge and Fly Ash." In Lecture Notes in Civil Engineering, 271–81. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1831-4_25.

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Krishna, Sistla Vinay, Aayushi Parashar, and J. S. Sudarsan. "Feasibility Study on Subgrade Stabilization of Pavement Using Lime and Fly Ash as Admixtures." In Lecture Notes in Civil Engineering, 195–202. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-5839-6_17.

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Тези доповідей конференцій з теми "Fly Ash-lime"

1

Yan, Zhang, and Meng Fan-feng. "Engineering properities of coal gangue with fly-ash lime." In 2011 International Conference on Consumer Electronics, Communications and Networks (CECNet). IEEE, 2011. http://dx.doi.org/10.1109/cecnet.2011.5769271.

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Li, Zhen-xia, Yuan-zhao Chen, and Jing-li Gong. "Rapid Curing Technology of Lime-Fly Ash Stabilized Macadam." In Tenth International Conference of Chinese Transportation Professionals (ICCTP). Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41127(382)419.

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3

Jincheng, Wei, Wang Lin, Yu Sixin, and Shiping Cui. "Research on Dynamic Modulus of Lime-Fly Ash Aggregate Mixture." In GeoHunan International Conference 2011. Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/47629(408)19.

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4

Consoli, N. C., and A. Dalla Rosa. "Parameters Controlling Strength of Coal Fly Ash—Lime Improved Soil." In GeoFlorida 2010. Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41095(365)5.

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"A Review of High Volume Low Lime Fly Ash Concrete." In International Conference on Biological, Civil and Environmental Engineering. International Institute of Chemical, Biological & Environmental Engineering, 2014. http://dx.doi.org/10.15242/iicbe.c0314119.

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Premkumar, S., J. Piratheepan, P. Rajeev, and A. Arulrajah. "Stabilizing Dispersive Soil Using Brown Coal Fly Ash and Hydrated Lime." In Geo-Chicago 2016. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784480144.087.

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Li, Hongsheng, Yingbiao Wu, and Zhao Hui. "Expansion and Cracks from a Lime Fly-Ash Stabilized Gravel Base." In Fourth Geo-China International Conference. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784480090.020.

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Fauzi, Achmad, Wan Mohd Nazmi, and Usama Juniansyah Fauzi. "SUBGRADE STABILIZATION ASSESSMENT OF KUANTAN CLAY USING LIME, PORTLAND CEMENT, FLY ASH, AND BOTTOM ASH." In Proceedings of the 3rd and 5th International Conference. WORLD SCIENTIFIC, 2011. http://dx.doi.org/10.1142/9789814365161_0065.

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Buhler, Russell L., and Amy B. Cerato. "Stabilization of Oklahoma Expansive Soils using Lime and Class C Fly Ash." In Geo-Denver 2007. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40906(225)1.

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Daniels, John L., and Gautham P. Das. "Field Scale Characterization of Fly Ash Stabilized with Lime and FGD Gypsum." In GeoCongress 2008. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40970(309)86.

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Звіти організацій з теми "Fly Ash-lime"

1

Keener, T. C., S. J. Khang, and G. R. Meyers. Evaluation of Ohio fly ash/hydrated lime slurries and Type 1 cement sorbent slurries in the U.C. Pilot spray dryer facility. Final report, September 1, 1993--August 31, 1994. Office of Scientific and Technical Information (OSTI), February 1995. http://dx.doi.org/10.2172/57880.

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2

He, Rui, Na (Luna) Lu, and Jan Olek. Development of In-Situ Sensing Method for the Monitoring of Water-Cement (w/c) Values and the Effectiveness of Curing Concrete. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317377.

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As the most widely used construction material, concrete is very durable and can provide long service life without extensive maintenance. The strength and durability of concrete are primarily influenced by the initial water-cement ratio value (w/c), and the curing condition during the hardening process also influences its performance. The w/c value is defined as the total mass of free water that can be consumed by hydration divided by the total mass of cement and any additional pozzolanic material such as fly ash, slag, silica fume. Once placed, field concrete pavements are routinely cured with liquid membrane-forming compounds. For laboratory study, concrete samples are usually cured in saturated lime water or a curing room with a relative humidity (RH) value higher than 95%. Thus, the effectiveness of curing compounds for field concrete needs to be studied. In this study, the dielectric constant value of plastic concrete was measured by ground penetrating radar (GPR). The w/c value of the plastic concrete was calculated by a mathematical model from the measured dielectric constant value. The calculated w/c value was compared with the microwave oven drying measurement determined result in AASHTO T318. A modified coarse aggregate correction factor was proposed and applied in microwave oven drying measurement to determine the w/c value of plastic concrete in AASHTO T318. The effectiveness of curing compound was evaluated by field concrete slabs by GPR measurement. It was found that GPR can be a promising NDT method for In this study, the dielectric constant value of plastic concrete was measured by ground penetrating radar (GPR). The w/c value of the plastic concrete was calculated by a mathematical model from the measured dielectric constant value. The calculated w/c value was compared with the microwave oven drying measurement determined result in AASHTO T318. A modified coarse aggregate correction factor was proposed and applied in microwave oven drying measurement to determine the w/c value of plastic concrete in AASHTO T318. The effectiveness of curing compound was evaluated by field concrete slabs by GPR measurement. It was found that GPR can be a promising NDT method for w/c determination of plastic concrete and curing effectiveness evaluation method for hardened concrete.
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