Stabilization of a Clayey Soil with Fly Ash and Lime: A Micro Level Investigation

Sharma, Neeraj Kumar; Swain, S. K.; Sahoo, Umesh Chandra

doi:10.1007/s10706-012-9532-3

Cited by 201 publications

(58 citation statements)

References 4 publications

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“…However, peaks related with montmorillonite (d = 4.51 Å and 1.50 Å) are observed to be sharper with the increase in lime content and curing period, confirming the alteration in its structure. Similar observations were made by Sharma et al (2012) for stabilization of clay with lime and fly ash. Fig.…”

Section: X-ray Diffraction Analysissupporting

confidence: 84%

Mechanism of improvement in the strength and volume change behavior of lime stabilized soil

Jha

Sivapullaiah

2015

Engineering Geology

150

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Section: X-ray Diffraction Analysissupporting

confidence: 84%

Mechanism of improvement in the strength and volume change behavior of lime stabilized soil

Jha

Sivapullaiah

2015

Engineering Geology

150

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“…In a typical experiment, about 50 mg of sample were heated from room temperature to 900°C. Three weight losses were quantified: the stepwise loss occurring at 115-150°C, that was attributed to CSH or CAH gels following Sharma et al [49], the weight loss due to dehydroxylation of CAH at around 260°C and the stepwise loss occurring nearby 750°C that is usually related to the decomposition of carbonates (mainly Calcite, CaCO 3 ).…”

Section: Thermogravimetric-differential Thermal Analysis (Tg-dta)mentioning

confidence: 99%

“…4b) samples two additional losses were detected, occurring at about 115-150°C, and about 260°C, respectively. The first one was attributed to the dehydration of CSH [49], while the second one to dehydration of CAH, according to Ref. [57].…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Weathering’s beneficial effect on waste-stabilised rammed earth: a chemical and microstructural investigation

Arrigoni

Pelosato

Dotelli

et al. 2017

Construction and Building Materials

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“…Ahmed (2014) also reported on the effectiveness of a predominantly fly ash-cement blend in lowering the soil's plasticity and susceptibility to water infiltration, both desirable features for the subgrade of pavements. Other recent solidification attempts with fly ash include mixing the material with reactive binders like lime (Sharma et al 2012) and limestone dust (Brooks et al 2011), as well as reinforcement elements like polypropylene fibres (Senol 2012) with soft soils. Note, however, that the quality of fly ashes is highly dependent on the source material and formation processes.…”

Section: Solidification With Fly Ashmentioning

confidence: 99%

Geo-parametric study of dredged marine clay with solidification for potential reuse as good engineering soil

Chan

2016

Environ Earth Sci

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Dredging is an essential process in the development, expansion and maintenance of ports, jetties and various water bodies. The process of removing sediments to create or maintain certain water depths inevitably produces large amounts of dredge materials. These displaced materials are generally soils of fine-grained nature, i.e., clay and silt size particles with limited usability due to low strengths and high compressibility. Besides, exposure of the sediments to contamination via the waterways has made disposal of the material a much more regulated and often costly practise, with uncertain risks of future detrimental effects to the dump site's surrounding environment. It is therefore favourable to explore the reusability of the dredged soils to minimise the need dumping. The present study examines the reuse potential of a dredged marine clay sample treated with induced solidification using binders like cement and coal ash. A series of geo-parametric measurements were performed on the material, including the physical and chemical properties as well as the relevant mechanical responses, i.e., strength and compressibility. The dredged sample was prepared in dry powder form and remoulded with an optimum water content to produce the base soil for solidification. This was necessary to ensure consistency of the water content in the soil for the various batches of specimens prepared for the different tests. It was found that the fundamental characteristics of the material could be effectively improved with the addition of small dosages of binders, as demonstrated by the filling of voids and aggregates formation in the solidified soil. The mechanical properties were also found to improve with prolonged rest period, where over 100 % strength increment and 60 % compressibility reduction were observed after 28 days. Binder-wise, the coal ash was less potent when used on its own and appeared to require activation by the cement for solidification to take place. Indeed, the blend of (3 % cement ? 7 % fly ash) and (5 % cement ? 5 % fly ash) produced the most significant strength and compressibility improvement, respectively. In short, corresponding results from the various tests conducted provided a better understanding of the solidification mechanism in the dredged marine clay sample for potential implementation on site.

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Stabilization of a Clayey Soil with Fly Ash and Lime: A Micro Level Investigation

Cited by 201 publications

References 4 publications

Mechanism of improvement in the strength and volume change behavior of lime stabilized soil

Mechanism of improvement in the strength and volume change behavior of lime stabilized soil

Weathering’s beneficial effect on waste-stabilised rammed earth: a chemical and microstructural investigation

Geo-parametric study of dredged marine clay with solidification for potential reuse as good engineering soil

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