A cost-effective recycled aggregates classification procedure for construction and demolition waste evaluation

Ferriz-Papi, JA; Weekes, E; Whitehead, N; Lee, A

Abstract

Current procedures for characterization of recycled aggregates from construction and demolition waste can be
time-consuming and costly, and hinder a greater breadth of re-use application. A multi-level Aggregate Potential
(Physical) (AP(P)) scale is presented as a simple and cost-effective procedure for this characterization. To validate
the AP(P), a group of mixed recycled aggregate samples were tested for composition, density, fines content,
water absorption and freeze–thaw resistance. The results identify different quality ratings with potential uses,
and simple treatments for higher value purposes. This procedure is purported to improve recycled aggregate
manufacturing and secondary material markets, therefore contributing to a more circular economy.

• Journal Article Type: Article
• Acceptance Date: Jan 26, 2022
• Online Publication Date: Feb 8, 2022
• Publication Date: Mar 21, 2022
• Deposit Date: Feb 10, 2022
• Publicly Available Date: Feb 8, 2023
• Journal: Construction and Building Materials
• Print ISSN: 0950-0618
• Publisher: Elsevier
• Volume: 324
• Pages: 126642
• DOI: https://doi.org/10.1016/j.conbuildmat.2022.126642
• Publisher URL: https://doi.org/10.1016/j.conbuildmat.2022.126642
• Related Public URLs: http://www.journals.elsevier.com/construction-and-building-materials/
• Additional Information: Funders : Welsh Government;Stenor Environmental Services, Ltd;University of Wales Trinity Saint David; Projects : Smart Partnership; Grant Number: 22181/Q3007