Abstract

Recycled aggregates (RA) from construction and demolition waste (CDW) instead of natural aggregates (NA) were analysed in the manufacture of new eco-friendly concrete. Fine (FRA) and coarse (CRA) recycled aggregates were used in different percentages as substitutes of natural sand and gravel, respectively. The results revealed that the use of RA in percentages of up to 50 wt.% is feasible. Additionally, RA were used to produce paving blocks in accordance with industrial requirements. Thus, values of water absorption lesser than 6.0% and tensile strength upper than 3.6 MPa were obtained, which are similar to those of a reference sample and within the limit values established by the regulations. These results were achieved by reducing the incorporation of cement, thereby saving production costs and minimizing environmental impact.

Details

Title
Construction and demolition waste as recycled aggregate for environmentally friendly concrete paving
Author
Contreras, Llanes Manuel 1   VIAFID ORCID Logo  ; Romero Pérez Maximina 2 ; Gázquez González Manuel Jesús 3 ; Bolívar Raya Juan Pedro 4 

1  University of Huelva, Department of Sociology, Social Work and Public Health, Research Centre for Natural Resources, Health and Environment (RENSMA), Huelva, Spain (GRID:grid.18803.32) (ISNI:0000 0004 1769 8134); University of Huelva, Department of Integrated Sciences, Research Centre for Natural Resources, Health and Environment (RENSMA), Huelva, Spain (GRID:grid.18803.32) (ISNI:0000 0004 1769 8134) 
2  Instituto de Ciencias de la Construcción Eduardo Torroja (IETcc-CSIC), Department of Materials, Madrid, Spain (GRID:grid.507646.6) (ISNI:0000 0001 2171 481X) 
3  University of Cádiz, Department of Applied Physics, Marine Research Institute (INMAR), Cádiz, Spain (GRID:grid.7759.c) (ISNI:0000000103580096) 
4  University of Huelva, Department of Integrated Sciences, Research Centre for Natural Resources, Health and Environment (RENSMA), Huelva, Spain (GRID:grid.18803.32) (ISNI:0000 0004 1769 8134) 
Pages
9826-9840
Publication year
2022
Publication date
Feb 2022
Publisher
Springer Nature B.V.
ISSN
09441344
e-ISSN
16147499
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1007/s11356-021-15849-4
ProQuest document ID
2621924372
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.