Abstract
Fly ash is a pozzolanic waste from the burning of coal ash in thermal power plant which will be unchangeable in India and increasing environmental pollution. There is an urgent need of increasing bulk utilization of fly ash in geotechnical application. In this regard, a study was undertaken to investigate the bearing capacity of fly ash slopes (β) with the strip footing of width (B) 0.1 m located at different edge distances (De = 1B, 2B, 3B) from slope crest. These tests were conducted in the laboratory and the pressure-settlement behaviour of strip footing on unreinforced and reinforced fly ash slope having an angle of 45? was studied. The embedment ratio (Z/B = 0.30), and the depth of first layer of polyester geogrid reinforcement were investigated with different footing edge distances (De = 1B, 2B, 3B). From the experiment, pressure and settlements were measured and subsequently, the pressure settlement curves were drawn. It is observed from test results that the load carrying capacity is found to increase with an edge distance in both cases: unreinforced and reinforced slope. Also, a substantial increase is observed in the bearing capacity with the addition of geogrid reinforcement. It is observed that, the bearing capacity ratio (BCR) decreases with edge distance increase. These investigations demonstrate that both, the ultimate bearing capacity and settlement characteristics of the foundation, can be improved due to the inclusion of reinforcements within the fill.
Highlights
Coal burning electric utilities annually produce million tons of fly ash as a waste byproduct and the environ-How to cite this paper: Patil, V.N. and Chore, H.S. (2016) Bearing Capacity of Embedded Strip Footing on Geogrid-Reinforced Fly Ash
The constant parameters selected for investigation include 45 ̊ slope angle (β) and single layer geogrid reinforcement of length (Lr = 7B) at 0.30 embedment ratio (Z/B) and the variable is footing location from slope crest; De = 1B, 2B, 3B where B is the width of the footing
Since the primary objective of the experimental investigation is to evaluate the efficiency of geogrid reinforcement in improving the load carrying capacity of pozzolonic waste material such as fly ash slopes; it is convenient to present the results of the reinforced system with respect to the corresponding results derived for the footing on an unreinforced slope
Summary
How to cite this paper: Patil, V.N. and Chore, H.S. (2016) Bearing Capacity of Embedded Strip Footing on Geogrid-Reinforced Fly Ash. The constant parameters selected for investigation include 45 ̊ slope angle (β) and single layer geogrid reinforcement of length (Lr = 7B) at 0.30 embedment ratio (Z/B) and the variable is footing location from slope crest; De = 1B, 2B, 3B where B is the width of the footing. These series of tests were performed to investigate the influence of geogrid reinforcement on ultimate bearing capacity and to study the critical location of the footing from slope crest (De)
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