Microstructural and Mineralogical Characterization of Clay Stabilized Using Calcium-Based Stabilizers

Solanki, Pranshoo; Zaman, Musharraf

doi:10.5772/34176

Cited by 47 publications

(18 citation statements)

References 52 publications

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“…A minor peak of calcite was also noticed. Similar peaks were also reported by Kampala and Horpibulsuk [38] and Solanki and Zaman [39].…”

Section: Methodssupporting

confidence: 89%

Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

James¹,

Pandian²

2018

Advances in Civil Engineering

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The study dealt with the effect of addition of sugarcane bagasse ash (BA) on the strength development of a lime stabilized expansive soil. Unlike previous investigations with combinations of lime and BA, this study compares the effect of lime contents determined by scientifically established procedures and the effect of BA on the stabilization of lime at different proportions with additional microstructural investigations. The minimum lime content required for stabilization known as initial consumption of lime (ICL) was determined using the Eades and Grim pH test as 5.5%. The optimum lime content (OLC) was determined using unconfined compression strength (UCS) tests as 7%. Another lime content less than ICL was randomly adopted as 3%. The three lime contents were mixed with 0.25%, 0.5%, 1%, and 2% BA. UCS samples of dimension 38 mm × 76 mm were prepared at a fixed dry density and moisture content and cured for periods of 2 hours (0 days), 3, 7, 14, and 28 days to study the development of strength and effect of BA. Mineralogical and microstructural analyses were performed on the pulverized UCS samples after failure. The results revealed that the addition of BA increased the immediate, early, and delayed strength of lime stabilized soil further, even when the lime content was lower than ICL. Addition of BA produced maximum immediate, early, and delayed strength gains of 58.3%, 20.7%, and 32.7%, respectively. Higher proportion of BA was required when lime content was above ICL, for maximum strength. Addition of BA resulted in better utilization of quartz in lime-soil reactions leading to formation of CSH and CAH minerals. A dense compact matrix was seen on analyzing the microstructure of the stabilized soil composite.

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“…A minor peak of calcite was also noticed. Similar peaks were also reported by Kampala and Horpibulsuk [38] and Solanki and Zaman [39].…”

Section: Methodssupporting

confidence: 89%

Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

James¹,

Pandian²

2018

Advances in Civil Engineering

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“…Among the problems arisen with the stabilization of clay soils is their mineralogical composition meaning that some of them is more easily stabilized [14]. The X-Ray diffraction analysis has shown that the clay contained a mixture of clay minerals with montmorillonite being the dominant constituent in the clay fraction.…”

Section: Resultsmentioning

confidence: 99%

The role of curing period on the engineering characteristics of a cement-stabilized soil

Athanasopoulou

2016

Romanian Journal of Transport Infrastructure

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Very often, pavements constructed in an economical manner or matching surface elevations of adjacent lanes cannot be designed for the soil conditions of the existing subgrade. Therefore, there is a need to stabilize the soil with an appropriate chemical substance in order to increase its strength to a satisfactory level. For the enhancement of subgrade soil strength characteristics, lime and cement are the most commonly used stabilizers. An experimental program was directed to the evaluation of a clayey soil and its mixtures with different cement contents performing tests on the index properties, the moisture-density relation, the unconfined compressive strength, and linear shrinkage. There is a definite improvement in strength. The time interval used to cure the prepared specimens affected positively both strength and plasticity features of the mixtures. A comparison with mixtures of the same soil with lime has been made, because of the wide use of lime in clay soil stabilization projects.

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“…The following list presents some of the engineering advantages of calcium-based soil stabilization [69]:…”

Section: Advantagesmentioning

confidence: 99%

Fundamentals of soil stabilization

2017

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Microstructural and Mineralogical Characterization of Clay Stabilized Using Calcium-Based Stabilizers

Cited by 47 publications

References 52 publications

Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

The role of curing period on the engineering characteristics of a cement-stabilized soil

Fundamentals of soil stabilization

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