Concrete performance evaluation of coarse aggregate replacement by civil construction waste

Juliane Patricia Oliveira, Carlos Henrique dos Santos, Maria Lúcia Okumura, Natália Ueda Yamaguchi

Abstract


The construction sector is considered a major generator of environmental impacts due to the high consumption of natural resources and waste generation. Thus, this article aims to evaluate the performance of a concrete produced by the partial and total replacement of natural coarse aggregate by recycled coarse aggregate, derived from the concrete residue of buildings and demolitions. The study was made by comparing the compressive strength and absorption of three different concrete traces, keeping the water/cement factor of 0.60 and changing only the proportions of recycled coarse aggregate between 0%, 50% and 100%. The results showed that the higher the percentage of substitution, the greater the water absorption and the lower the resistance results concrete compression. This result was obtained due to the lighter characteristic of the recycled aggregate compared to the natural aggregate. It was concluded that the concrete produced with recycled aggregates could be used in nonstructural functions, giving an adequate destination to the construction and demolition waste and consequently reducing the extraction and consumption of natural resources and contributing for the sustainable development.

Keywords


Green concrete; Recycling; Sustainable development.

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DOI: https://doi.org/10.5902/2236117043603

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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

DEAR AUTHORS,

PLEASE, CHECK CAREFULLY BEFORE YOUR SUBMISSION:

- IF ALL AUTHORS "METADATA" (ORCID, LINK TO LATTES, SHORT BIOGRAPHY, AFFILIATION) WERE ADDED,

- THE CORRECT IDIOM YOUR SECTION,

- IF THE HIGHLIGHTS WERE ADDED,

- IF THE GRAPHIC ABSTRACTS WAS ADDED,

- IF THE REVIEWERS INDICATION WAS DONE,

- IF THE REFERENCES FORMAT ARE CORRECT(ABNT)

- IF THE RESOLUTION YOUR FIGURES (600 DPI) ARE SUITABLE

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PREZADOS AUTORES,

POR FAVOR, VERIFIQUE ATENTAMENTE ANTES DA SUBMISSÃO: 
- SE OS METADADOS (ORCID, LINK PRO LATTES, CURTA BIOGRAFIA E AFILIAÇÃO) DE "TODOS" OS AUTORES FORAM ADICIONADOS, 
- IDIOMA, 
- SE OS HIGHLIHTS FORAM ADICIONADOS, 
- SE O GRAPHICAL ABSTRACT FOI ADICIONADO, 
- SE A INDICAÇÃO DOS REVISORES FOI FEITA, 
- SE O FORMATO DAS REFERÊNCIAS ESTÁ ADEQUADO (ABNT) 
- SE A RESOLUÇÃO SUAS FIGURAS (600 DPI) ESTÁ ADEQUADA.

 

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Digital Object Identifier (DOI): 10.5902/22361170

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Accesses since 19/06/2012

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