Workability and mechanical properties of oil palm shell lightweight aggregate concrete containing fly ASH as partial cement replacement

The production of concrete consumes a larger number of natural resources. The oil palm shell (OPS) was one of the major producer waste material from the oil palm industry and fly ash (FA) wastes from combustion. These wastes have caused many environmental problems. In order to solve this problem, the OPS was used to replace coarse aggregate and FA as a partial cement replacement. This research is to investigate workability, compressive strength, flexural strength, splitting tensile strength and modulus of elasticity of OPS lightweight aggregate concrete (LWAC) containing FA. 10, 20, 30, and 40% of FA added in the concrete as partial cement replacement. A total of 180 specimens were subjected to air curing for testing. The result demonstrates the reduction of strength when the increasing level of FA in the specimen. The OPS LWAC containing 20% of FA still can be used for structural application