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Performance evaluation of silty sand reinforced with fibres

Performance evaluation of silty sand reinforced with fibres,10.1016/j.geotexmem.2009.09.017,Geotextiles and Geomembranes,Fauziah Ahmad,Farshid Bateni,

Performance evaluation of silty sand reinforced with fibres   (Citations: 2)
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Triaxial compression tests were conducted to evaluate the response of randomly distributed fibre on the strength of reinforced silty sand. In this study, oil palm empty fruit bunch (OPEFB) fibre was mixed with silty sand soil to investigate the increase of shear strength during triaxial compression. The specimens were tested under drained and undrained conditions with 0.25% and 0.5% content of OPEFB fibres of different lengths (i.e. 15mm, 30mm and 45mm). In addition, OPEFB fibres coated with acrylic butadiene styrene thermoplastic were tested to determine the effect of coating on reinforcement. Inclusion of randomly distributed discrete fibres significantly improved the shear strength of silty sand. Coated OPEFB fibres increased the shear strength of silty sand much more compared to uncoated fibres. Coating fibres increases interface friction between fibre and soil particles by increasing the surface area. Reinforced silty sand containing 0.5% coated fibres of 30mm length exhibited approximately 25% increase in friction angle and 35% in cohesion under undrained loading conditions compared to those of unreinforced silty sand. The results indicate that the shear strength parameters of the soil-fibre mixture (i.e. Φ′ and c′) can be improved significantly.
Journal: Geotextiles and Geomembranes - GEOTEXT GEOMEMBRANE , vol. 28, no. 1, pp. 93-99, 2010
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