The Open Construction & Building Technology Journal


ISSN: 1874-8368 ― Volume 11, 2017
RESEARCH ARTICLE

Environmental Improvement in Use of Fine Fraction Recycled Aggregates as a Raw Material in Masonry Mortar Fabrication



Mariano González Cortina1, *, Pablo Saiz Martínez1, Francisco Fernández Martínez2
1 Architectural Construction and Control Department, Higher Technical School of Building Construction, Universidad Politecnica de Madrid, España
2 Chemistry and Polymers Department, University school of Technical Industrial Engineering, Technical Universidad Politecnica de Madrid, España

Abstract

Background:

Great use of raw material and natural resources as well as generation of huge amount of waste make the construction and building sector one of the less sustainable human activities.

Objective:

The main aim of this research is to study both technical feasibility and environmental sustainability of fine fraction recycled aggregates (RA) use in masonry mortar fabrication. Method. The tests were developed using the binder CEM IV/B (V) 32.5 N and two types of RA: ceramic RA and concrete RA. The substitution percentages were 50%, 75% and 100% and cement-to-aggregate by dry weight proportions were 1:3 and 1:4.

Results:

Performed tests show that cement-based mortars fabricated with CEM IV/B (V) 32. 5 N can incorporate concrete and ceramic recycled aggregates, using both cement-to-aggregate proportions, complying with the limits established by the Spanish standards. On the other hand, carbon footprint calculation of one of the RA used in the research and a comparative study with natural aggregate (NA) carbon footprint were carried out to analyze environmental sustainability of fine fraction RA. Conclusion. The results show that the amount of kgCo2eq released into the atmosphere as a result of RA fabrication is significantly lower compared with the emissions from NA fabrication, and therefore the use of this type of waste reduces greenhouse gas emissions.

Keywords: Waste treatment, Fine recycled aggregate, Recycled mortar characterization, Carbon footprint.


Article Information


Identifiers and Pagination:

Year: 2017
Volume: 11
Issue: Suppl-2, M6
First Page: 371
Last Page: 380
Publisher Id: TOBCTJ-11-371
DOI: 10.2174/1874836801711010371

Article History:

Received Date: 05/06/2017
Revision Received Date: 2/07/2017
Acceptance Date: 3/07/2017
Electronic publication date: 30/11/2017
Collection year: 2017

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© 2017 Cortina et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at Higher Technical School of Building Construction, Madrid Polytechnic University, Juan de Herrera 6, 28040 Madrid, Spain, Tel: +34913367596; E-mail: mariano.gonzalezc@upm.es


Endorsements



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Hailong Zhao
School of Civil Engineering,
Tianjin University, Tianjin,
China


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