Study of non-structural concrete with different content of recycled coarse aggregates of Construction and Demolition Waste
DOI:
https://doi.org/10.46421/enarc.v8i00.2958Keywords:
Construction and demolition waste, Recycled aggregate, Crushing plant, Non-structural concreteAbstract
Construction and demolition waste (CDW) represents approximately 40% of the waste generated worldwide. Most of this waste isn’t disposed of properly, thus becoming an environmental problem. In this context, the present study aims to investigate recycled coarse aggregates from construction and demolition originating from the crushing plant in the city of Betim, MG, in non-structural concrete. The characteristics of the recycled aggregate and the mechanical, physical, and microstructural properties of concretes with CDW contents of 0%, 20%, 33%, and 50% were evaluated as a replacement for natural aggregate. It was found that these CDWs have a high content of ceramic waste, contributing to increased abrasion wear, porosity, and water absorption. It is concluded that the replacement affects the overall properties of the concrete, however, it does not affect the use of these waste materials for non-structural concrete, as the requirements for the use of this type of concrete are minors.
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