FLEXURAL BEHAVIOR OF T SHAPED REINFORCED CONCRETE HOLLOW BEAM WITH PLASTIC BOTTLE WASTE

Abstract

Reinforced concrete girder with T shaped beam is a widely used bridge construction in Indonesia. Principal calculation of bridge structure is based on the simply supported beam which is the concrete will be experienced compression and the reinforcing steel will experienced tension. Due to that reason, concrete region under the neutral axis will not be calculated as strength contribution. Because of this assumptions, T shaped beam with plastic bottle waste was considered. There are several advantages using this material such as reducing of structural weight, reducing cement as concrete base material which realted to the environment issue, the reduction of cement means reducing the potential of CO2 pollution and utilizing the plastic bottle waste means reducing the environment pollution by plastic material which is difficult to be decomposed. The beams were in two conditions which were apparent T shaped beam and the neutral T shaped beam with the cross section taken from the cross section of reinforced concrete girder bridge with 1:3 scale. The aim of this study is to compare the ultimate load of normal beam and beam with plastic waste. The result showed that there is not significantly different between two sample. It means that their ability to retain the loads is not significantly different.