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 article, the effects of ground granulated blast slag (GGBS) and ratios of fly ash (solid) to alkaline activator (liquid) were investigated for road pavement construction.
Abstract: This study intended to address the problem of damaged (collapsed, cracked and decreased soil strength) road pavement structure built on clay soil due to clay soil properties such as low shear strength, high soil compressibility, low soil permeability, low soil strength, and high soil plasticity. Previous research reported that ground granulated blast slag (GGBS) and fly ash can be used for clay soil stabilizations, but the results of past research indicate that the road pavement construction standards remained unfulfilled, especially in terms of clay’s subgrade soil. Due to this reason, this study is carried out to further investigate soil stabilization using GGBS and fly ash-based geopolymer processes. This study investigates the effects of GGBS and ratios of fly ash (solid) to alkaline activator (liquid) of 1:1, 1.5:1, 2:1, 2.5:1, and 3:1, cured for 1 and 7 days. The molarity of sodium hydroxide (NaOH) and the ratio of sodium silicate (Na2SiO3) to sodium hydroxide (NaOH) was fixed at 10 molar and 2.0 weight ratio. The mechanical properties of the soil stabilization based geopolymer process were tested using an unconfined compression test, while the characterization of soil stabilization was investigated using the plastic limit test, liquid limit test, scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The results showed that the highest strength obtained was 3.15 MPA with a GGBS to alkaline activator ratio of 1.5 and Na2SiO3 to NaOH ratio of 2.0 at 7 days curing time. These findings are useful in enhancing knowledge in the field of soil stabilization-based geopolymer, especially for applications in pavement construction. In addition, it can be used as a reference for academicians, civil engineers, and geotechnical engineers.
22 citations
TL;DR: Polymers have been widely known as nontraditional soil stabilizers capable of replacing common soil additives to reach superior soil stabilization outcomes as discussed by the authors. But they are not suitable for use in agricultural applications.
Abstract: Polymers have been widely known as nontraditional soil stabilizers capable of replacing common soil additives to reach superior soil stabilization outcomes. While numerous studies represent...
22 citations
Journal Article•
TL;DR: In this paper, a comparison of commercially available polymer emulsions to provide comparisons of these materials for stabilization of silty sand was performed. But no significant differences in the retained wet strength and toughness were found between the polymers and cement soil additives.
Abstract: Laboratory evaluations were performed on several commercially available polymer emulsions to provide comparisons of these materials for stabilization of silty sand. Portland cement stabilized specimens were prepared and tested to provide a conventional stabilizer control. Results indicate that some polymer emulsions achieve compressive and retained wet strengths on the same order as the cement stabilized soils at lower additive levels. Toughness values reveal that some soil polymers exhibit significantly higher values for both the wet and dry testing condition than soil cements, indicating significantly higher strains were attained at yield (defined as the point of maximum applied stress. No significant differences in the retained wet strength and toughness were found between the polymers and cement soil additives. Cure time behavior of several soil polymers indicates that these systems may not have reached ultimate physical properties after 28 day cure times.
22 citations
TL;DR: A series of design elements leading to the required geosynthetic strength, modulus, anchorage length and surface friction are illustrated in this paper and an attempt at integrating the above mentioned technical considerations into the actual fabric's manufacture is presented.
22 citations
DOI•
01 Jun 1998
TL;DR: In this paper, a full-scale trial has been carried out to evaluate the performance of ground granulated blast furnace slag (ggbs) in combination with lime, for stabilizing soils.
Abstract: Soil stabilization with cement or lime is a well established technique for use in highway or foundation construction. Extensive laboratory investigations and a full-scale trial have been carried out to evaluate the performance of ground granulated blast furnace slag (ggbs) in combination with lime, for stabilizing soils. This paper reports the results of laboratory tests for strength and swelling, and also describes the full-scale trial. The applicability of lime/ggbs combinations has been demonstrated. In addition, laboratory tests have shown a previously undemonstrated advantage where the incorporation of ggbs combats the deleterious swelling which can occur when sulphate-containing soils are stabilized with cement or lime.
22 citations