RECOMENDAÇÕES DE USO DO AGREGADO RECICLADO MISTO EM ELEMENTOS CONSTRUTIVOS PARA CONSTRUÇÃO CIVIL E PAVIMENTAÇÃO

Abstract

The construction sector is considered the second largest industry in the country, responsible for a large part of the Gross Domestic Product (GDP), however it is also responsible for a large part of the solid waste generation. Construction waste (CCW) or construction and demolition waste (CDW) is waste from construction, renovation, repair and demolition of construction works, and waste resulting from land preparation and excavation. The objective is to list the possible products for use in construction and paving that incorporate mixed recycled aggregate - MRA - to replace natural aggregate to contribute to the reverse logistics of the sector. It was decided to carry out a systematic review of the literature, checking the Scielo, CAPES Periodicals, ENARC Annals (National Meeting on the Use of Construction Waste) and Scholar Google platforms. The results showed the feasibility of obtaining sealing concrete blocks, conventional concrete without structural function, base and sub-base layers of paving, soil-cement mixtures for monolithic walls and soil-cement blocks; however, the limitation of the MRA incorporation levels was realized in order to meet the physical and mechanical requirements required by Brazilian standards. Finally, it is possible to ensure the physical-mechanical feasibility of replacing natural aggregate with mixed recycled aggregate, providing economic and environmental improvements.