Analysis Of Compressive Strength And Failure Pattern Of Concrete Made Of Diffrent Ratio Of Recycled Concrete Aggregate And Normal Aggregate

Abstract

In Bangladesh a huge development is in the part for recent year. For sustaining this development, huge amount of construction material is required. For continuing this, raw materials are required from natural resources from far side which is very much costly. Other hand a lot of old structures that had been constructed a quite long time are being demolished in recent times. Removing the debris from these demolished structures are also costly as well as they required a huge space for landfill. Rather than processing the new aggregate for construction work from bricks/Bolder is not environment friendly. In this study, an attempt has been made to Recycled the old debris from demolished structures. The aggregate was separated from old debris with necessary screening, resizing as per construction codes & standards. Similarly regular aggregate was selected & mixed with Recycled aggregate with different mixing combinations. With same amount of cement, sand & water was mixed to form concrete cylinder to obtain concrete compressive strength. Then concrete compressive strength was compared to each other to evaluate the performance of Recycled aggregate. From the study it is observed that compressive strength of concrete, containing regular aggregate has greater value than the concrete containing Recycled aggregate. Concrete containing more Recycled aggregate has least compressive strength. So, for low-rise Building/Structures proposed in locations where seismic zone is not severe, this Recycled aggregate can be used according proper guideline of Building Engineer. Thus, Recycled aggregate can play a vital role for development of countr