Effects of chemical stabilizers on an expansive clay

Zhao, Honghua; Ge, Louis; Petry, Thomas M; Sun, Yuwen

doi:10.1007/s12205-013-1014-5

Cited by 68 publications

(24 citation statements)

References 3 publications

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“…The decrease in the consistency limits associated with the increase in the curing time is relatively small if compared to the reduction that took place in the early stages of the treatment. Zaho et al [13] observed almost a similar trend. The plasticity index (PI) of the soil decreased from 46.1% to 22% after 28 days curing.…”

Section: Atterberg Limitsmentioning

confidence: 65%

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Feasibility of Calcium Chloride Dehydrate as Stabilizing Agent for Expansive Soil

Sharo¹,

Alhouidi²,

Al-Tawaha³

2018

JESTR

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The effectiveness of stabilizing expansive soil by enhancing its geotechnical properties using calcium chloride dehydrate (CaCl 2 .2H 2 O) as a soil stabilizing agent was investigated in this research. The chemical treatment process using calcium chloride elaborates carrying out experimental laboratory tests on an expansive soil taken from eastern side of Irbid city (Jordan) to check the influence of calcium chloride on its geotechnical engineering properties. Calcium chloride (CaCl 2) was added as a solution of 1.0 N concentration with 3:1 solution to soil ratio and soaked to allow for the occurrence of chemical reaction. The main soil properties studied in this work were the consistency limits, maximum dry density, optimum moisture content, the unconfined compression strength of the soil, swelling percentage, swell pressure and the Californian bearing ration test (CBR). Tests results, at different curing time, revealed that calcium chloride can be considered as a good stabilizing agent for expansive soil since its use displayed a significant reduction in swelling potential (80%) and swelling pressure (50%) after 28 of curing. Also, the use of CaCl 2 enhances soil strength properties by increasing the unconfined compression strength (q u), increasing the maximum dry unit weight (γ d−max .) and increasing the CBR from 2.11 % to 8.32 %.

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Section: Atterberg Limitsmentioning

confidence: 65%

“…However, de Carvalho et al [12] used different cationic inhibition for clay swelling. It is usually benefit for soils with clay fraction more than 25% and reduce swelling potential [13]. Chemical agents through injection's method were used by [14].…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Calcium Chloride Dehydrate as Stabilizing Agent for Expansive Soil

Sharo¹,

Alhouidi²,

Al-Tawaha³

2018

JESTR

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“…Untreated expansive soil exhibits obvious volume change due to the variation of moisture content, causing severe damage to the structure of pavement [3]. Lime is wildly used in treating expansive soil [4]. e treatment by lime decreases swelling potential, improves workability, and enhances strength of expansive soil [5,6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Axial Pressure on Lime‐Treated Expansive Soil Subjected to Wetting and Drying Cycles

Tang

Lü

Yao

2019

Advances in Civil Engineering

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e impact of seasonal moisture variation on subgrade soil, including lime-treated expansive soil, has been investigated in many studies. However, when performing wetting and drying cycles, the effect of stress, which decides the behavior and mechanical properties of soil, is usually ignored. In this paper, the effect of axial surcharge pressure on the deformation and resilient modulus of lime-treated expansive soil subjected to wetting and drying cycles was investigated. A self-made apparatus was chosen to apply axial surcharge pressure and precisely control the variation of moisture content. e lime-treated specimens were placed in the self-made apparatus and then subjected to wetting and drying cycles under three different surcharge pressures. e results show that the axial surcharge pressure has a significant influence on the development of axial strain and resilient modulus. In particular, larger surcharge pressure induces accumulate irreversible shrinkage, whereas lower surcharge pressure tends to lead to irreversible swelling. On the contrary, the larger surcharge pressure leads to higher resilient modulus of the tested specimen after wetting and drying cycles.

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“…provision of a cohesive non-swelling layer, provision of a moisture barrier, chemical stabilization, and use of geosynthetics. A lot of work has been done on the stabilization of expansive soils by different materials, resulting in improved swell-shrink characteristics [7]- [11] and geosynthetics have found a wide variety of applications in soil engineering in recent times, with a lot of research undertaken on their various applications [12]- [18]. However, the use of geosynthetics in swell control has not been dealt with to the same degree of detail or depth.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Laboratory Investigation into the Role of Geosynthetics in the Initial Swell Control of an Expansive Soil

James

Vijayasimhan

Srinivasan³

et al. 2019

Civil and Environmental Engineering Reports

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Volume change in expansive soils due to the intervention of water causes swell. A laboratory investigation using two different gbeosynthetic materials was designed to minimise the swell characteristics. The influence of three parameters, being geosynthetic material [Secutex (ST) and Combigrid (CG)], orientation (horizontal and vertical), and number of layers (1, 2, and 3) on the swell of an expansive soil was studied to better understand the potential for geosynthetics in swell control. The study on the immediate swell characteristics (limited to 24 hours) helps in gaining confidence in the use of geosynthetics in the swell control of expansive soils. From the investigation results, it was found that all three parameters, being type of material, orientation, and number of layers influenced the swell control of the soil. When two layers of ST and CG were placed both vertically and crossed, they reduced the swell of the virgin soil by almost 60% and 44%, respectively. It can, therefore, be concluded that geosynthetics can play an effective role in the swell control of expansive soils.

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Effects of chemical stabilizers on an expansive clay

Cited by 68 publications

References 3 publications

Feasibility of Calcium Chloride Dehydrate as Stabilizing Agent for Expansive Soil

Feasibility of Calcium Chloride Dehydrate as Stabilizing Agent for Expansive Soil

Effect of Axial Pressure on Lime‐Treated Expansive Soil Subjected to Wetting and Drying Cycles

A Comparative Laboratory Investigation into the Role of Geosynthetics in the Initial Swell Control of an Expansive Soil

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