Topic
Soil stabilization
About: Soil stabilization is a research topic. Over the lifetime, 3161 publications have been published within this topic receiving 48437 citations.
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TL;DR: In this paper, the improvement in engineering properties relevant to highway design and construction obtained when clayey subgrade soils are stabilized with lime or fly ash was evaluated in an experimental program, which included California bearing ratio (CBR) tests to evaluate the bearing strength of stabilized soils used as working platforms during highway construction.
Abstract: Laboratory tests have been carried out in order to evaluate the improvement in engineering properties relevant to highway design and construction obtained when clayey subgrade soils are stabilized with lime or fly ash. The experimental program included California bearing ratio (CBR) tests to evaluate the bearing strength of stabilized soils used as working platforms during highway construction. The admixture of lime or fly ash caused an increase in the plasticity limit, while both the liquid limit and the plasticity index of the soils have been reduced. Substantial increases in the California bearing ratio value, higher than those of the soil–fly ash mixtures, have been obtained when the soil samples were mixed with lime. The swelling after a 4-day soaking period has been reduced with the addition of both additive materials. The increase in optimum moisture content acts subsidiarily to the increased CBR value, particularly at high lime or fly ash percentages. An analogous effect has been found for...
41 citations
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TL;DR: In this article, the root system of alpine vegetation has been studied to quantify the effect of root density on soil aggregate stability in the forefield of the Lys glacier in the Aosta valley in Italy.
41 citations
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TL;DR: The results confirm the successful performance of Persian gum in binding soil particles, pore filling, thermal stability, soil fluctuation and formation of large particles in comparison to common hydrocolloids.
41 citations
01 Jan 2005
TL;DR: The combustion of subbituminous coals in electrical generating units produces a fly ash that has proven benefits for the construction industry as discussed by the authors, which is the inorganic material within the coal that has been fused during combustion, solidified while suspended in the exhaust gases and collected by electrostatic precipitators.
Abstract: The combustion of subbituminous coals in electrical generating units produces a fly ash that has proven benefits for the construction industry. Fly ash consists of the inorganic material within the coal that has been fused during combustion, solidified while suspended in the exhaust gases and collected by electrostatic precipitators. Bituminous coals have low concentrations of calcium compounds and the ash produced (Class “F”) exhibits no self-cementing characteristics. The addition of activators such as lime yields cementitious products so that this material can be used for a wide range of soil stabilization applications. Subbituminous coals have higher concentrations of calcium carbonate (CaCO3); thus, the ash (Class “C”) produced during combustion is rich in calcium, resulting in the self-cementing characteristics. Since Class “C” fly ash is self-cementing; activators such as lime or Portland cement are not required. Upon exposure to water, Class “C” fly ash hydrates forming cementitious products similar to those produced during the hydration of Portland cement. This property makes the self-cementing fly ash a very effective and economical stabilization agent for use in variety of construction applications.
41 citations
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TL;DR: In this paper, a composite binary admixture (CBA) is proposed for the improvement of mechanical characteristics of fat clay by using FM as fiber reinforcement and silica fume (SF) as the cementitious agent in the form of a CBA.
41 citations