Avaliação da resistência de concretos com incorporações de pó de pedra e resíduo de construção e demolição (RCD)

Abstract

Studies aimed at understanding and trying to explain the incorporation of new materials in concrete have become frequent in the literature found. For, the construction industry is considered as one of the major consumers of natural resources in the world. Aiming at the search for sustainability, current research has focused on recycling and reuse of these wastes. In this context, the focus of this research focuses on the incorporation of crushing dust and construction and demolition waste - Construction Waste Demolition as a substitution in the fine and coarse aggregates respectively. Ahead, characterization tests of materials such as particle size, specific mass and unit were performed, using the replacement of 5%, 10% and 15% Construction Waste Demolition and 10% of stone dust in concrete. Then the concrete specimens were made, being analyzed in their fresh and hardened state through physical (slump test and specific mass) and mechanical (compressive strength) tests. Finally, the main results showed that the concrete with 5% Construction Waste Demolition and 10% Rock Powder Showed a good quality and alternative to be used in the market, with all the results of consistency considered as workable and the grades that obtained the best results were evaluated.