USE OF RECYCLED AGGREGATE TO REPLACE AGGREGATE NATURAL REINFORCED WITH STEEL FIBER

Abstract

This paper aims to use and manufacture recycled aggregate from the use of RCD (construction and demolition waste) for partial replacement of natural coarse aggregate in the manufacture of concrete for structural purposes. Partial replacements were made with between 10% and 20% recycled aggregate. Six experimental groups were created, two for reference and four for comparison. Each group comprised eight (8) cylindrical specimens (dimensions of 100 mm x 200 mm) and a beam (dimensions of 150 mm x 150 mm x 600 mm). The results indicated the feasibility of replacing up to 20% of natural aggregate with recycled aggregate, according to the processing procedures outlined in this study, particularly in relation to compression properties. Furthermore, the validity of substitution of up to 10% for evaluations of tensile strength in compression was verified, showing an analogous behavior between the corresponding samples.