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Advances in Civil Engineering
Volume 2018, Article ID 7949741, 6 pages
https://doi.org/10.1155/2018/7949741
Research Article

Carbon Footprint of Recycled Aggregate Concrete

Chetumal Institute of Technology, Avenida Insurgentes No. 330, 77050 Chetumal, QROO, Mexico

Correspondence should be addressed to Luis F. Jiménez; xm.ude.lamutehcti@zerrotjf

Received 30 August 2017; Accepted 23 April 2018; Published 30 May 2018

Academic Editor: Ghassan Chehab

Copyright © 2018 Luis F. Jiménez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Carbon footprint is one of the most widely used tools for assessing the environmental impacts of the production and utilization of concrete as well as of the components derived from it, representing the amount of carbon dioxide and other greenhouse gases associated with this product, expressed as CO2 equivalents. In this paper, carbon footprint was used to compare the environmental performance in the production phase of a concrete made with both recycled and crushed virgin limestone aggregates, using a life cycle analysis methodological approach. Research outcomes revealed, as expected, that carbon dioxide equivalent emissions decreased slightly as the use of recycled aggregates increased. Emissions for concrete with 0.5 w/c were between 347 and 351 kg of CO2-e/m3. It was also corroborated that cement is the material with the greatest influence on greenhouse gas emission generation in the concrete’s production phase, regardless of the use of recycled or virgin aggregates.