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A platform for research: civil engineering, architecture and urbanism
Strength Characteristics of Clayey Sub-Grade Soil Stabilized with Fly Ash and Lime for Road Works
Abstract In this paper an attempt has been made to improve the strength properties of clayey soil (near NH-6, Burla of Sambalpur, Orissa, India) to be used as sub-grade by using locally available fly ashes as admixtures with lime. It is observed that addition of 3 % lime along with 30 % fly ash by weight of virgin soil showed a remarkable improvement in the California bearing ratio (CBR) values. The soaked (after 4 days soaking curing) CBR value of virgin clayey soil found to be 2.3 %. On the other hand, soil mixed with 30 % fly ash and 3 % lime by weight, the soaked CBR increased to 55.8 % after 8 days moist curing in air with additional 4 days soaking (total 12 days curing). Further it was observed that soil mixed with 30 % fly ash and 2 % lime, the soaked CBR increased to 48 % after same total 12 days curing, which was 21 times of CBR value of virgin soil. Also the modulus of elasticity of 70:30:3 mixes was found to be 230.87 MPa for sub-grade and 501.03 MPa for sub-base of road, where as that of only soil was found to be 24.64 MPa as sub-grade and 53.47 MPa for sub-base respectively. Some other mixes also showed promising values.
Strength Characteristics of Clayey Sub-Grade Soil Stabilized with Fly Ash and Lime for Road Works
Abstract In this paper an attempt has been made to improve the strength properties of clayey soil (near NH-6, Burla of Sambalpur, Orissa, India) to be used as sub-grade by using locally available fly ashes as admixtures with lime. It is observed that addition of 3 % lime along with 30 % fly ash by weight of virgin soil showed a remarkable improvement in the California bearing ratio (CBR) values. The soaked (after 4 days soaking curing) CBR value of virgin clayey soil found to be 2.3 %. On the other hand, soil mixed with 30 % fly ash and 3 % lime by weight, the soaked CBR increased to 55.8 % after 8 days moist curing in air with additional 4 days soaking (total 12 days curing). Further it was observed that soil mixed with 30 % fly ash and 2 % lime, the soaked CBR increased to 48 % after same total 12 days curing, which was 21 times of CBR value of virgin soil. Also the modulus of elasticity of 70:30:3 mixes was found to be 230.87 MPa for sub-grade and 501.03 MPa for sub-base of road, where as that of only soil was found to be 24.64 MPa as sub-grade and 53.47 MPa for sub-base respectively. Some other mixes also showed promising values.
Strength Characteristics of Clayey Sub-Grade Soil Stabilized with Fly Ash and Lime for Road Works
Mishra, Er. Niroj Kumar (author)
Indian Geotechnical Journal ; 42 ; 206-211
2012-07-04
6 pages
Article (Journal)
Electronic Resource
English
Strength Characteristics of Clayey Sub-Grade Soil Stabilized with Fly Ash and Lime for Road Works
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