Abstract

Bottom ash is one of the major industrial wastes coming out of the thermal power plants in huge quantities, while on the other hand, disposed polyethylene terephthalate (PET) bottles which are used for bottling mineral water/soft drinks and discarded after use are also causing huge environmental problems. Use of this non-biodegradable waste as soil reinforcement along with bottom ash may help in solving the problems of their disposal and environmental hazards. Keeping this in view, a series of model footing tests were conducted to investigate the response of square model footing supported on bottom ash reinforced with multilayered geocell mattresses made up of waste PET bottles. The influence of number of geocell layers, width of geocell mattress and aspect ratio of unit cell was studied. The results revealed that insertion of multilayered geocell-reinforced bottom ash in the subgrade results in a considerable improvement in the load bearing capacity.

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