Effect of Compaction conditions on the Hydraulic and Compressibility Behaviour of Fly Ash – Cement

Abstract

Landfill liners are used for the efficient containment of waste materials generated from different sources. In the absence of impermeable natural soils, compacted mixtures of expansive soil and sand have found wide applications as landfill liners. It is to be noted that, in case, these materials are not locally available, the cost of the project increases manifold due to its import from elsewhere. Also, sand has become an expensive construction material due to its limited availability. With this in view, the present study attempts to explore a waste material such as fly ash as a substitute for sand. The major objective of this study is to maximize the use of fly ash for the said application. Different criteria for evaluating the suitability of material for landfill liner have been proposed in this study. However, further investigations are required with different source of fly ash and alternative material to generalize the findings.