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Analysis of the Concrete Developed With Recycled Coarse Aggregate

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Author(s): Luís Eduardo Azevedo Modler | Cristina Eliza Pozzobon

Journal: Revista Teoria e Prática na Engenharia Civil
ISSN 1677-3047

Volume: 8;
Issue: 11;
Start page: 43;
Date: 2008;
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ABSTRACT
The aim of this study is to analyze concretes developed by partial and total substitution of coarse aggregate, obtained by the recycled concrete. The study begins with the characterization of the materials: coarse aggregate obtained by grinding of the concrete samples, coarse aggregate obtained by grinding of the natural rock, natural fine aggregate and Portland cement. The next step is to find the mixture composition, through a mix-design method, to produce concretes having compressive strength of 15-40 MPa, and with 0%-75% of substitution of the natural aggregate for the recycled aggregate. After that, the mixtures are tested to analyze theirs properties in the fresh state and in the mature state. In possession of these results it makes possible to compose some tendency graphs that can correlate the studied variable. Then it is possible to evaluate some aspects of technical viability of the substitution of the natural aggregate for the recycled aggregate.
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