Technical feaseability analysis of the use of recycled aggregates in concrete

Abstract

The civil construction waste causes a great environmental impact, because it is produced on a great volume and it pollutes natural resources, although it has a great recycling capability, allowing for the insertion of the solid waste, on the form of recycled aggregate, in the civil construction cycle again. This work has the objective of comparing the compressive strength of concretes using 15%, 30% and 100% of recycled aggregates. The research subdivided, mostly, on physical aggregates characterization, concrete dosage by the American Concrete institute method and the axial compression test. The compressive strength, on 28 days, of the 100% recycled and the 100% natural concretes were similar, with 30,8 and 32,71, respectively, confirming the use of recycled aggregates as feasible .