Experimental Study on Replacement of Coarse Aggregate Partially By Recycled Broken Brick Aggregate

By for the most common coarse aggregate used in concrete is obtained from natural rock, the type of rock suitable for concrete making is not available everywhere. In Tripura a northern-eastern state of India brick aggregate concrete are used conventionally for ordinary concrete due to scarcity of aggregate from natural source. Due to advancement of concrete technology and to fulfill the durability requirement it is necessary to use standard concrete. The stone aggregate is used; cost of construction has been sky rocked as there is transported from other states. Due to lack of availability of stone aggregate in Bangladesh, most of the old structures are constructed with brick chips as coarse aggregate, therefore the recycled aggregate investigated in the study is different from the recycled aggregate investigated in other countries which are mostly made of stone chips. The properties of recycled aggregate, such as specific gravity, absorption capacity were tested water-to-cement ratio 0.4 and 0.45 concrete specimens were tested at 7 and 28 days compressive strength. This paper presents an experimental investigation on the properties of concrete obtained by replacing stone aggregate (partly) crushed clay-brick. In this study, the coarse aggregate was partially replaced (5%, 7.5%, 10%, 20% and 30%) by brick aggregate as replacement of stone aggregate. Different relations for determination of compressive strength. Admixture Mapie is used to increase the workability, and compressive strength of concrete.