Abstract
Abstract This paper discusses the laboratory study of performance on expansive soil reinforced with polypropylene fiber and demonstrates that discrete and randomly distributed polypropylene fiber is useful in restraining the swelling tendency of expansive soils. Swelling characteristics of remoulded expansive soil specimens reinforced with varying fiber content (f = 0.2%, 0.3%, 0.4% and 0.5%) and aspect ratio (l/b = 15, 30 and 45) were studied. One dimensional swell-consolidation tests were conducted on consolidometer specimens. Reduction in heave and swelling pressure was the maximum at low aspect ratios at both the fibers contents of 0.2%, 0.3%, 0.4%, and 0.5%. Finally, the mechanism by which discrete and randomly distributed polypropylene fiber restrain swelling of expansive soil is explained with the help of soil-fiber interaction.
Published Version
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