Swell-shrink Cycles of Lime Stabilized Expansive Subgrade

Al-Taie, Asmaa; Disfani, Mahdi M.; Evans, Robert; Arulrajah, Arul; Horpibulsuk, Suksun

doi:10.1016/j.proeng.2016.06.083

Cited by 40 publications

(12 citation statements)

References 6 publications

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“…Dafalla and Shamrani [62] noted that if preliminary geotechnical investigation of expansive soils in subgrades of pavements is not carried out prior to construction, it may lead to improper drainage and premature structural failures. Puppala and Pedarla [63] stressed the need of utilizing ecofriendly and economical waste materials such as bagasse ash, which offers high strength and more durability, to build subgrades over expansive soils [64][65][66][67]. ese swelling soils are also present in the Middle East and Gulf countries including Pakistan, Iran, India, Oman, and Saudi Arabia that largely affects the lightly loaded civil engineering structures [40,68].…”

Section: Damages Caused By Expansive Soils In Superstructures and Infmentioning

confidence: 99%

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

Jalal

Jamhiri

et al. 2020

Advances in Materials Science and Engineering

109

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Calcium-based stabilizer materials (CSMs) exhibit pozzolanic properties which improve the properties of clayey soils by hydration, cation exchange, flocculation, pozzolanic reaction, and carbonation. In this comprehensive review, comprising over past three decades from 1990 to 2019, a mechanistic literature of expansive soil stabilization by incorporating CSMs is presented by reviewing 183 published research articles. The advantages and disadvantages of CSMs as the ground stabilizing agent are succinctly presented, and the major outcomes of physicochemical effects on soil properties are discussed in detail. After blending with CSM, the main and interaction effects on soil properties with focus on chemical processes such as X-ray fluorescence, X-ray diffraction analyses, and microstructure interaction by using scanning electron microscopy and thermogravimetric analysis have been reviewed in light of findings of past researchers. This work will help geotechnical engineers to opt for suitable CSM in the field of geoenvironmental engineering in committing to sustainable construction of civil engineering structures over expansive soils.

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Section: Damages Caused By Expansive Soils In Superstructures and Infmentioning

confidence: 99%

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

Jalal

Jamhiri

et al. 2020

Advances in Materials Science and Engineering

109

View full text Add to dashboard Cite

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“…Hence, the expansive potential of the soil is stabilized with the use of cement-based binding materials before constructions in these regions. For assessing the stabilization efficiency, the durability of the stabilized soil after being subjected to factors such as acid rain, sulfate attack, wetting-drying cycles, freezing-thawing cycles, and carbonation process is worthy of a detailed investigation [5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Carbonation Behavior in Lime‐Stabilized Expansive Soil

Zha

Liu

et al. 2020

Advances in Civil Engineering

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e carbonation behavior of lime-stabilized expansive soil is important for assessing the stabilization efficiency from the perspective of durability. In this study, the accelerated carbonation tests, measurement of pH value distribution, and the free swell ratio tests were conducted to investigate the evolutions of carbonation depth, carbonation extent, and expansive potential of limestabilized expansive soil. XRD, MIP, and SEM techniques were adopted as supplements to reveal the carbonation mechanism. Results demonstrated that the carbonation depth of lime-stabilized expansive soil increased significantly as time elapsed; however, the rate of increase reduced when the carbonation time increased. Higher carbonation depth was obtained at higher temperature and CO 2 concentration and lower relative humidity, which was described by an empirical model. Fully, partly, and noncarbonated zones were subsequently presented with an increase in the depth of the soil. e expansive potential of lime-stabilized expansive soil was partially recovered during carbonation. e obtained linear relationships between the free swell ratio and pH value were adopted to describe the evolution of expansive behavior with carbonation time and depth. In microstructural analysis, the conversion of portlandite into calcium carbonate was significant, which resulted in changes in microstructure and controlled the carbonation behavior.

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“…This study provides new insights into the desiccation cracking of expansive clayey soils and shows the potential of MICP applications in the crack remediation.Geosciences 2019, 9, 385 2 of 16 associated with high labor, high cost, and poor long-term serviceability [11]. Chemical agents such as cement and lime have been used to reduce the shrinkage potential and suppress the crack development in soils [12,13]. However, lime or cement additives did not completely suppress the soil desiccation cracking when the initial water content was high, and more importantly, might harm plant growth and cause irreversible environmental concerns [14].…”

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confidence: 99%

Desiccation Cracking Behavior of MICP-Treated Bentonite

et al. 2019

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This study aims to characterize the effect of microbial-induced calcite precipitation (MICP) on the desiccation cracking behaviors of compacted calcium bentonite soils. We prepare six groups of samples by mixing bentonites with deionized water, pure bacteria solution, pure cementation solution, and mixed bacteria and cementation solutions at three different percentages. We use an image processing tool to characterize the soil desiccation cracking patterns. Experimental results reveal the influences of fluid type and mixture percentage on the crack evolution and volumetric deformation of bentonite soils. MICP reactions effectively delay the crack initiation and remediate desiccation cracking, as reflected by the decreased geometrical descriptors of the crack pattern such as surface crack ratio. The mixture containing 50% bacteria and 50% cementation solutions maximizes the MICP treatment and works most effectively in lowering the soil cracking potential. This study provides new insights into the desiccation cracking of expansive clayey soils and shows the potential of MICP applications in the crack remediation.

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Swell-shrink Cycles of Lime Stabilized Expansive Subgrade

Cited by 40 publications

References 6 publications

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

Experimental Investigation on Carbonation Behavior in Lime‐Stabilized Expansive Soil

Desiccation Cracking Behavior of MICP-Treated Bentonite

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