Experimental Study of the Flexural Behavior of Concrete Beams with Recycled Brick Aggregate

Abstract

Two specimen of concrete beam with recycled brick aggregate and a common reinforced concrete beam as contrast specimen were designed. The beams were simply supported, the width and height of the rectangle section of the beams was 150mm and 300mm, the span were 3m, reinforcement and loading method were the same. The replace ratio of mass of recycled clay brick aggregate to stone aggregate is 35%. MTS was used in the loading. Mechanical and flexural behavior of the beams was tested. Comparison and analysis were made on the stress of the reinforced bars and the deformation behavior of the beams. Results show that the bearing capacity of recycled aggregate concrete beam was lower than that of the reinforced concrete beam under the same condition, the recycled aggregate concrete beams own good ductility in flexural failure, but their bearing capacity and stiffness decreased slightly.