Expansive soil stabilization with coir waste and lime for flexible pavement subgrade

International Conference on Recent Advances in Materials, Mechanical and Civil Engineering

材料科学;机械制造;土木建筑工程

Narendra Goud, G.^1,2 ; Hyma, A.^2 ; Shiva Chandra, V.^2 ; Sandhya Rani, R.^3

Department of Civil Engineering, Indian Institute of Technology, Hyderabad, India^1

Department of Civil Engineering MVSREC Nadergul, Hyderabad, India^2

Civil Engineering Department, MVSREC Nadergul, Hyderabad, India^3

关键词: California bearing ratio;    Coconut husk;    Coir fibers;    Expansive soils;    Flexible pavements;    Potential materials;    Stabilized soils;    Unconfined compressive strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/330/1/012130/pdf
DOI  :  10.1088/1757-899X/330/1/012130

来源: IOP

【 摘 要 】

Expansive soil properties can be improved by various methods to make it suitable for construction of flexible pavement. The coir pith is the by-product (bio-waste) generated from coir industry during extraction of coir fiber from coconut husk. Openly disposed coir pith can make the surrounding areas unhygienic. This bio-waste can be one of the potential materials to stabilize the expansive soils. In the present study coir pith and lime are used as stabilizers. Different combinations of coir pith contents (1%, 2% and 3%) and lime contents (2%, 3% and 4%)are used to study the behavior of expansive soil. Unconfined compressive strength (UCS) of unstabilized and stabilized soils was determined. Optimum content of coir pith and lime are determined based on UCS of the soil. California bearing ratio of soil determined at optimum contents of coir pith and lime. Flexible pavement layer compositions for two levels of traffic using stabilized soil subgrade.