A Review on performance of coir fiber reinforced sand

Reinforced earth is a composite material, a combination of soil and reinforcement duly placed to bear the tensile stresses developed and also to improve the resistance of soil in the direction of maximum stress. The majority of currently published literature about randomly oriented fiber reinforcement deals with the reinforcement of cohesion less or granular soils.. Availability, economical benefits, easy to work and rapid to perform; and feasibility of using in all weather conditions are the general advantages of short fiber composite soils. The technical benefits of using fibers in soil reinforcement include: preventing the formation of the tensile cracks, increasing hydraulic conductivity and liquefaction strength, reducing the thermal conductivity and weight of building materials, restraining the swelling tendency of expansive soils; and decreasing the soil brittleness. It can be concluded that the increase in strength and stiffness was considered to be a function of Fiber characteristics like aspect ratio, skin friction, weight fraction modulus of elasticity, shape, particle size and gradation of sand and confining stress condition.