Paper Title
Effect of Oil Palm Shell on The Surface Strength of Fiber Reinforced Concrete.

Abstract
In this study, Oil Palm Shell (OPS) partly replaced with conventional aggregates. The effect of OPS and steel fibers were studied. Several concrete mixes were prepared with different OPS coarse aggregates amount of 25%, 50% and 75% that replaced by mass of 10 mm size conventional coarse aggregates. OPS fine aggregates amount of 10%, 7.5% and 5% replaced by mass of conventional fine aggregates. This procedure was imitated for target mean strength of 30MPa. Non destructive laboratory test - Schmidt hammer were tested on the surface of the concretes at the curing age of 28 days. Key words- aggregates, fiber, rebound Schmidt hammer, testing.