Abstract
In this study, six composite reinforcements such as cement composite made of Abandoned Cell Husks (ASH), Stones, Wood chips, Concrete and Bricks have been used along with control specimen. It is known that the material used in earth reinforcement applications must be safe against tension failure and adhesion failure for its effective utilization in the field and reliable design of earth structures. Single type of material can provide limited reinforcement capability in reinforced earth structures due to its low frictional resistance and poor cohesion. For an optimal response, therefore, composite reinforcement, that fulfils both the requirements such as possess adequate tensile strength and adequate frictional resistance, is getting considerable attention. Slope stability analyses containing six types of reinforcement have been performed. Stability of the slope has been quantified using minimum factor of safety corresponding to critical slip surface. It was observed that the composite reinforcement whose surface treated by brick aggregate enhanced the factor of safety significantly. The paper also depicted the design aids of reinforced slope in terms of embedding lengths and spacing of reinforcements.
Highlights
The embankments, dams, foundations, abutments and all earth fill structures must be stable under all static and dynamic loadings during construction and on-service [1]
It is known that the material used in earth reinforcement applications must be safe against tension failure and adhesion failure for its effective utilization in the field and reliable design of earth structures
The results obtained and the observations made clearly revealed that the addition of small amount of recycled aggregate increased the resisting forces of cement composites and significantly improved the stability of reinforced soil
Summary
The embankments, dams, foundations, abutments and all earth fill structures must be stable under all static and dynamic loadings during construction and on-service [1]. Collapse in earth fill embankments occurs at the critical slip surface when the factor of safety (Fs) decreases due to weathering, erosion, seepage, changes of surface and subsurface water, earthquake and many other natural calamities [2,3,4,5,6,7,8]. There are various earth reinforcing materials worldwide. The geosynthetic or geogrid are conventional reinforcements that are commonly used for earth reinforcement applications. It is evident that the conventional reinforcements, used for reinforcing earth fill structure, contain only one type of material such as geogrid, geosynthetic or wire mesh etc. Single type of material can provide limited reinforcement capability in reinforced earth structures due to its low frictional resistance and poor cohesion. Different types of reinforcement that fulfils both the requirements such as possess adequate tensile strength and adequate frictional resistance, is getting considerable attention lately [12,13]
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