NYLON GRID AS SOIL REINFORCEMENT IN C-Φ SOILS

Abstract

In this study nylon rope has been considered as soil reinforcement in the form of grid at 6 x 6 inches spacing. To determine the resistance of the ropes under different normal stresses, simulating 2, 4, 6, 8 feet high embankments, pullout tests were performed. The apparatus for pullout test was fabricated. Five nylon ropes (¼ inches thick) in the grid were pulled out of the test pit, with the help of motorized jack. The resistance offered by the ropes was measured with the help of proving ring. Tests were conducted on Risalpur soil. Laboratory tests were carried out to determine the index properties of soil. After conducting the pullout tests, it is found that the nylon grid can be used as soil reinforcement for low to moderate height slopes i.e. 8 to 15 feet high slopes or embankments and it can also be used in the subgrade stabilization of weak soils. In this hypothesis nylon was used as reinforcement because it is cheaper than the other polymeric reinforcement (Paraweb straps) and steel reinforcement. It can be practiced in stabilizing slopes of the embankments. In the temporary works it can be utilized efficiently for reinforcing the military bunkers and underground trenches for its stability.