ABSTRACT
This paper presents a study based on laboratory model tests conducted with square footing on unreinforced and geogrid reinforced crusher dust. Crusher dust produced as industrial waste from rubble crusher units causes an alarming situation to the environment. To make it sustainable, it can be consumed in bulk below pavements, for embankments and for shallow foundations. In the present study, this waste has been used as a foundation material for laboratory experimental work in a model test tank. Three layers of reinforcement at loose density were used below square footing. The effect of layers was studied with respect to UBC (ultimate bearing capacity) and the bearing capacity factor (Nγ). The test was conducted at RD = 29% with geogrid layers at specified depth and the model test was conducted with two surface square footings of different size (B) of 0.15m and 0.18m. It has been observed that the UBC is increasing with increase in reinforcement layer, whereas the (Nγ) is increasing with increase in reinforcement layers but decreasing with increase in footing size.
