Physical and mechanical characterization of concrete blocks for paving with recycled aggregate

Authors

  • Sandra Regina Rocha Oliveira Universidade Federal do Tocantins
  • Indara Soto Izquierdo Universidade Federal do Tocantins
  • Orieta Soto Izquierdo Universidade Federal do Tocantins

DOI:

https://doi.org/10.20873/uftsupl2021-12516

Abstract

The Construction Materials Laboratory of the Federal University of Tocantins, Palmas campus, produces a lot of concrete waste in the form of specimens, as a result of academic research carried out by Civil Engineering students. These residues are discarded close to the laboratory and do not have a proper destination, and that is why it has become a problem. The present research sought to use these crushed residues as coarse aggregates in the production of precast paving blocks and compared them with a reference mix. The replacements were in the contents of 25%, 50% and 75% of natural aggregates. The evaluation of the viability of the replacement was carried out through the dimensional analysis, compressive strength and water absorption tests of the produced blocks. The water absorption of all paving blocks satisfactorily complied with what is specified in the standard. The mixes using recycled aggregates achieved greater compressive strength compared to the reference mix, and the mixture with a content of 75% showed the best mechanical behavior. In this way, it was possible to show through the research a new destination for concrete waste from laboratories, minimizing the environmental and visual impacts within the university and enabling an adequate destination.

Published

2022-04-10

How to Cite

Rocha Oliveira, S. R., Soto Izquierdo, I., & Soto Izquierdo, O. (2022). Physical and mechanical characterization of concrete blocks for paving with recycled aggregate. DESAFIOS - Revista Interdisciplinar Da Universidade Federal Do Tocantins, 8(Especial), 111–118. https://doi.org/10.20873/uftsupl2021-12516