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Randomly distributed fiber reinforcement technique has successfully been used in a variety of applications such as slope stabilization, road subgrade and sub base etc. This is a relatively simple technique for ground improvement and has tremendous potential as a cost effective solution to many geotechnical problem. Keeping this in view the present study was taken up. In this study a series of triaxial compression tests under different confining pressures were conducted on locally available (Itanagar, Arunachal Pradesh, India) soil without and with Jute Fiber. The percentage of Jute fiber by dry weight of soil was taken as 0.25 %, 0.5 %, 0.75 and 1 % and they were randomly mixed with the soil. The soil samples of unreinforced and reinforced soil for triaxial tests were prepared at maximum dry density corresponding to optimum water content The shear strength parameters (c and I) and stiffness modulus (I­d /Iµ i.e. ratio of deviator stress to corresponding strain) of soil corresponding to each fiber content was determined in the geotechnical engineering laboratory of NERIST. The effect of change in diameter of fiber was also investigated. Tests results indicate that on inclusion of Jute fiber, the shear strength parameters (c and I) and stiffness modulus (I­d /Iµ) of soil are increases. It was also observed that on increasing the percentage of Jute fiber, these parameters are further increases and the increase is substantial at fiber contents of 1 %. It was further observed that the change in diameter of fiber affects these strength parameters and they increase with the increase in diameter of fiber. Thus there is a significant increase in shear strength parameters and stiffness modulus of soil due to Jute fiber and this will considerably increase the load carrying capacity and reduce the value of immediate settlement of soil significantly

international journal of innovative research in science engineering and technology/international journal of innovative research in science, engineering and technology

Strength and Stiffness Response of Itanagar Soil Reinforced with Arecanut Fiber