Bearing capacity of strip footing resting on fibre‑reinforced pond ash overlying soft clay

摘要

The use of the industrial hazardous waste like pond ash to strengthen the soft clay (weak soil) is also helpful in solving theland requirement problem for its deposition. In the present study, the results of an investigation carried out on double-layersoil system have been presented. The model tests have been conducted with a strip footing resting on soil system whichcontains unreinforced and randomly distributed fibre-reinforced pond ash (RDFP) layer over soft clay. The effect of the pondash layer thickness (i.e. 0.5B, 1.0B and 1.5B) compacted at optimum moisture content, the fibre length (6 mm, 12 mm and18 mm) and the percentage of fibres in RDFP layer, i.e. 0.5%, 0.75% and 1.0% have been studied. The results have indicatedthat the provision of compacted pond ash layer and the addition of fibres into pond ash significantly influence the ultimatebearing capacity. The results in the form of bearing pressure ratio (BPR) have shown that the improvement with 1.5B thicknessof RDFP and 1% of fibre inclusions is maximum. The validation of results has also been done using a finite elementtool PLAXIS 3D.