A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Determination of Resilient Modulus of Layered Bio-stabilized Soil
Expansive soils exhibit high swelling and shrinkage characteristics due to which they are unsuitable for many Civil Engineering applications. Many conventional methods of stabilization have been practiced on such problematic soils by researchers in the past. Lately, bio-stabilization is a technique which is gaining importance in the field of ground improvement due to sustainability and its eco-friendly nature. In the design and construction of any infrastructure, the load application is considered to have significant impact only within the zone bounded by isobar. In the present work, it is proposed to quantify the zone of influence of enzyme blended black cotton soil with respect to wheel load application on pavements. Laboratory tests were performed on oven dried black cotton soil for the determination of its index and engineering properties. CBR (California Bearing Ratio) value is commonly used for the design of pavements in Indian conditions wherein enzyme blended soil is prepared in three lifts. The mechanical behavior of enzyme blended expansive soil of different thickness was studied through the evaluation of its resilient modulus on the basis of bearing ratio values. It is also proposed to suggest an optimum thickness of enzyme blended soil, which would be effective in withstanding the applied wheel load, thereby enhancing economic pavement constructions. In order to have a comparative study and effective assessment, the experiments were conducted for varying dosages and curing periods. It was observed from the experimental studies that enzyme treatment is effective in improving modulus of bio-stabilized black cotton soil. Further, a reduction in pavement thickness was also observed as a result of enzyme treatment and curing effect.
Determination of Resilient Modulus of Layered Bio-stabilized Soil
Expansive soils exhibit high swelling and shrinkage characteristics due to which they are unsuitable for many Civil Engineering applications. Many conventional methods of stabilization have been practiced on such problematic soils by researchers in the past. Lately, bio-stabilization is a technique which is gaining importance in the field of ground improvement due to sustainability and its eco-friendly nature. In the design and construction of any infrastructure, the load application is considered to have significant impact only within the zone bounded by isobar. In the present work, it is proposed to quantify the zone of influence of enzyme blended black cotton soil with respect to wheel load application on pavements. Laboratory tests were performed on oven dried black cotton soil for the determination of its index and engineering properties. CBR (California Bearing Ratio) value is commonly used for the design of pavements in Indian conditions wherein enzyme blended soil is prepared in three lifts. The mechanical behavior of enzyme blended expansive soil of different thickness was studied through the evaluation of its resilient modulus on the basis of bearing ratio values. It is also proposed to suggest an optimum thickness of enzyme blended soil, which would be effective in withstanding the applied wheel load, thereby enhancing economic pavement constructions. In order to have a comparative study and effective assessment, the experiments were conducted for varying dosages and curing periods. It was observed from the experimental studies that enzyme treatment is effective in improving modulus of bio-stabilized black cotton soil. Further, a reduction in pavement thickness was also observed as a result of enzyme treatment and curing effect.
Determination of Resilient Modulus of Layered Bio-stabilized Soil
Lecture Notes in Civil Engineering
Laishram, Boeing (editor) / Tawalare, Abhay (editor) / Divya, V. (author) / Asha, M. N. (author)
International Conference on Advances in Civil Engineering ; 2020
2021-12-15
8 pages
Article/Chapter (Book)
Electronic Resource
English
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