BEHAVIOUR OF RANDOMLY DISTRIBUTED FIBER-REINFORCED SOIL

K.M.Girija

Abstract: This study presents the laboratory investigation of engineering behavior of discrete fiber-reinforced soil. Locally available C-Ø soil (SM) is used as medium and polypropylene fibers with a constant aspect ratio (l/d) are used as reinforcement. Soil is compacted with Standard Proctor’s maximum density with low percentage of reinforcement (0 to 0.7% by weight of dry soil). CBR tests, direct shear tests and unconfined compression tests were conducted on un-reinforced as well as reinforced soil samples to investigate the strength characteristics of fiber-reinforced soil. The test results reveals that the inclusion of fibers in soil increases the CBR value, Unconfined Compressive strength and Shear strength of soil. It is noticed that the optimum fiber content for achieving maximum strength is approximately 0.4% to 0.6% of the dry weight of the soil

Keywords: CBR test, Fiber reinforcement, Direct shear test, unconfined test

DOI: https://doi.org/10.15623/ijret.2013.0213086