Characterization of Concrete Using Recycled Aggregate

Abstract

: Recycling of concrete waste as   an aggregate   for new   concrete construction saves huge disposal cost, conserves natural resources, and provides economic benefits also. Accordingly, recycled aggregates when replace natural aggregates, reduce the unit cost of concrete and conserves energy. In addition, recycled aggregates when used improve the economy too.

Recycling of concrete is a relatively simple process. It involves breaking, removing, and crushing existing concrete into a material with a specified size and quality. The quality of concrete with recycled concrete aggregates is very dependent on the quality of the recycled material used.

In comparative study on recycled aggregate concrete and natural aggregate concrete, here is an attempt to study the workability and strength characteristics of cubes comprising of natural aggregates, crushed cubes aggregates. The experimental analysis has been divided in to two categories by comparing the quality of concrete produced by natural aggregates and crushed cubes aggregates. The concrete mix is designed for characteristic M25 strength. The water/cement ratio is kept as 0.5. The qualities of these fresh concretes as regards to workability are accessed. The strength parameters of hardened concrete like compressive strength will be observed. Comparison of cubes with different proportions of silica will also be carried out.