Strength performance of reinforced concrete beam containing waste tire rubber and local waste material

Abstract

The strength of Reinforced Concrete (RC) structure is one of the concerns for construction development. In this study, waste tire rubber has been used to replace fine aggregate and the local waste material, Rise Husk Ash (RHA) as a cement replacement. Three groups of specimens with the same percentage of RHA about 10% and different percentages of waste crumb rubber (CR), 0%, 6% and 10% have been produced. Cube specimen and cylinder specimen are tested under compressive strength test and splitting tensile test. Besides, RC beam is tested under four points bending test. It is observed that by replacing 10% of RHA as cement replacement in addition to 0%, 6% and 10% of CR into concrete specimen, it can produce the compressive strength of 52.3 MPa, 34.3MPa and 28.6MPa respectively. Meanwhile, splitting tensile test gives a result of 2.80 MPa, 2.17 MPa and 1.84 MPa, respectively, based on the different CR percentages. For four points bending test, 6% of CR with 10% RHA gain 81.3 kN maximum load with 4.98 mm deflection while 10% of CR with 10% of RHA generate 79.5 kN of maximum load with 5.86 mm deflection compared with control specimen. Overall, 6% of CR with 10% of RHA in the reinforced concrete beam manage to withstand maximum load compare with control specimen.