Waste of Civil Construction for Use in Mortar and Production of Structural Concrete

Abstract:

Civil construction is a sector of extreme impact on the Brazilian economy, both in terms of jobs as well as consumption of raw material and waste generation. Civil construction waste (CCW) represents a large part of the total mass of municipal solid waste in a medium and large city. An alternative to diminish these released wastes is to reuse them. In this work, a study was carried out using CCW both to produce concrete with sand substitution and as a small aggregate for use in mortar. The compression strength of structural concrete and mortar, with total and partial replacement of sand, was analyzed. In addition, the consistency of mortar with the replacing was also studied. The results of the compression test indicate superior quality for concretes (75wt% CCW) and mortar with CCW incorporation. The required amount of water for good workability in the modified mortar is 310 g, against 270 g for the reference mortar.

• Periodical: Materials Science Forum (Volume 1012)
• Pages: 215-220
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1012.215
• Online since: October 2020
• Authors: Jheison Lopes dos Santos, Niander Aguiar Cerqueira, Afonso Rangel Garcez de Azevedo, Alan Marinho Costa, M.T. Marvila, Daiane Cecchin, Marcio Zago Gomes, Sergio Neves Monteiro
• Keywords: CCW, Concrete, Mortar, Reuse

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