Abstract
Conventional geosynthetics in the form of strips, grids, sheets, etc., used for earth reinforcement are planar. The usage of three-dimensional reinforcing elements is gradually gaining popularity. This investigation aims at checking the feasibility of using multi-oriented reinforcements for improving the pore pressure dissipation and swell-shrink characteristics of sands in the saturated state. A systematic and comprehensive set of drained and undrained triaxial compression tests were conducted on unreinforced and reinforced saturated sands. Variable parameters considered include the confining pressure (σ3) and drainage conditions. The presence of multi-directional reinforcing elements improved the peak deviatoric stresses. The reinforcement inclusions also reduced the dilation of sand samples considerably. The presence of reinforcements, however, was found to increase the initial and peak pore pressure response for reinforced sand, over its unreinforced counterpart.
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