Flexural performance of RC beams made with recycled brick aggregate

Abstract

An investigation on the flexural performance of reinforced concrete beams made with recycled brick aggregate was conducted. For this, 24 reinforced concrete beam specimens of width 200mm, height 250mm and length 2100mm were made with recycled brick aggregate, picket brick aggregate, and brick aggregate. Other variables include steel ratio, doubly reinforced, and singly reinforced concrete beams. Flexural tests of the beams were performed by four-point loading test. During loading, deflections of the beams at the middle and middle-third locations were recorded. Crack widths and crack spacing were also recorded. The beams were loaded gradually till failure. The results of beams made with recycled brick aggregate were compared with the same results of beams made with virgin brick aggregates, i.e. picket brick aggregate and brick aggregate. It is revealed that the design equations proposed in ACI 318-14 for design of reinforced concrete beams can be used for design of beams made with recycled brick aggregate.