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Journal ArticleDOI

Swell-compressibility characteristics of lime-blended and cement-blended expansive clays – A comparative study

03 Apr 2015-Geomechanics and Geoengineering (Taylor & Francis)-Vol. 10, Iss: 2, pp 153-162
TL;DR: In this article, the authors present experimental data on lime-blended and cement-blending expansive clay specimens, including free swell index (FSI), heave, rate of heave and swelling pressure.
Abstract: Chemical stabilisation of expansive soils has been quite efficacious in reducing swelling characteristics, namely, swell potential (S%) and swelling pressure (ps). When chemicals such as lime and cement are added to an expansive clay, flocculation and cementation take place. Flocculation, which is an immediate reaction, is instrumental in reducing plasticity and swell potential significantly. It also reduces the time required for equilibrium heave. This paper presents experimental data on lime-blended and cement-blended expansive clay specimens. Free swell index (FSI), heave, rate of heave and swelling pressure were studied. FSI, heave and rate of heave decreased with increasing lime content and cement content in the blends. But, during a 3-day inundation (a period, generally allowed for the sample to attain to equilibrium heave), cementitious products developed and resisted the applied compressive loads stiffly, resulting in high swelling pressures in the case of lime-blended specimens. Swelling pressure...
Citations
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Journal ArticleDOI

185 citations

Journal ArticleDOI
TL;DR: Zhang et al. as discussed by the authors investigated the relationship of factors that influence shale swelling, including initial water content, clay fraction, and confined pressure, and found that water adsorption creates higher swelling volume than moisture adsorptions.

126 citations

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the potential use and effectiveness of expansive clay stabilization using a mixture of cement and silica fume (CSF) as a possibly useful option from environmental, economic, and (or) technical perspectives.

104 citations

Journal ArticleDOI
TL;DR: In this article, the influence of lime sludge, a byproduct of the paper industry, on the index properties of expansive clays was investigated, including their compaction characteristics, stress-strain behaviors at different curing periods and CBRs.

48 citations

Journal ArticleDOI
TL;DR: In this article, the effect of stabilizer content, curing time and moisture content on the UCS based upon 150 samples of stabilized soil is described, and the results indicate an optimum value of lime or cement.
Abstract: This paper describes the effect of stabilizer content, curing time and moisture content on the UCS based upon 150 samples of stabilized soil. The results indicate an optimum value of lime or cement...

35 citations

References
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01 Jan 1975
TL;DR: In this article, an extension of the Fondation Reference Record is described. But this record was created on 2004-09-07, modified on 2016-08-08.
Abstract: Keywords: Expension ; Fissuration ; Gonflement ; Fondation Reference Record created on 2004-09-07, modified on 2016-08-08

619 citations

Journal Article
TL;DR: A discussion of an earlier paper with the aforementioned title by E. Cokca, published in this journal (Volume 127, Number 7, July 2001), is presented in this article, where the discusser states that the author has presented an interesting paper that enriches the literature and furthers knowledge on fly ash, especially as it concerns this product outside the U.S.
Abstract: A discussion of an earlier paper with the aforementioned title by E. Cokca, published in this journal (Volume 127, Number 7, July 2001), is presented. The discusser states that the author has presented an interesting paper that enriches the literature and furthers knowledge on fly ash, especially as it concerns this product outside the U.S. Based on his experience in this field, the discusser offers some comments on: fly ash; the origin of coal; lime, cement, and fly ash; swelling potential; and x-ray diffraction and scanning electron microscopy, as they relate to the author's work. Closure from the author is included.

349 citations


"Swell-compressibility characteristi..." refers background in this paper

  • ...Further, chemical stabilisation of expansive soils with various additives such as lime, cement, calcium chloride and fly ash (Shankar and Maruthi 1989, Desai and Oza 1997, Cokca, 2001, Phanikumar and Nagareddayya 2001) has also met with considerable success....

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Journal ArticleDOI
TL;DR: In this paper, the effect of fly ash content on the free swell index, swell potential, swelling pressure, plasticity, compaction, strength, and hydraulic conductivity characteristics of expansive soil was evaluated.
Abstract: This note presents a study of the efficacy of fly ash as an additive in improving the engineering characteristics of expansive soils. An experimental program has evaluated the effect of the fly ash content on the free swell index, swell potential, swelling pressure, plasticity, compaction, strength, and hydraulic conductivity characteristics of expansive soil. The plasticity, hydraulic conductivity and swelling properties of the blends decreased and the dry unit weight and strength increased with an increase in fly ash content. The resistance to penetration of the blends increased significantly with an increase in fly ash content for a given water content. Excellent correlation was obtained between the measured and predicted undrained shear strengths.

348 citations


"Swell-compressibility characteristi..." refers background in this paper

  • ...Fly ash can be used for control of expansion resulting from alkali-silica reactivity (Phanikumar and Sharma 2004, Shon et al. 2004)....

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  • ...Fly ash, used as an additive, enhances the strength of the blend (Chandra 1997, Joshi and Lohtia 1997, Phanikumar and Sharma 2004) because of the pozzolanic reaction....

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Journal ArticleDOI
TL;DR: In this article, several methods have been suggested to control the excessive heave associated with swelling of expansive soils, which can cause considerable distress to lightweight civil engineering structures, such as bridges.
Abstract: Excessive heave associated with swelling of expansive soils can cause considerable distress to lightweight civil engineering structures. Several methods have been suggested to control this problem....

347 citations

Journal ArticleDOI

185 citations


"Swell-compressibility characteristi..." refers background or methods in this paper

  • ...Some of these techniques are sand cushion technique (Satyanarayana 1966), drilled and belled piers (Chen 1988) and granular pile-anchors (Phanikumar 1997)....

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  • ...As a result of the swell-shrink behaviour of expansive soils, lightly loaded civil engineering structures founded in them are severely damaged (Chen 1988)....

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