Details

Autor(en) / Beteiligte

• Wijayasundara, Mayuri
• Mendis, Priyan
• Crawford, Robert H.

Titel

Methodology for the integrated assessment on the use of recycled concrete aggregate replacing natural aggregate in structural concrete

Ist Teil von

• Journal of cleaner production, 2017-11, Vol.166, p.321-334

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• Recycled concrete waste in the form of recycled concrete aggregate (RCA) is presently used mostly as a road base filler in Australia. However, instead of producing natural aggregate (NA) to manufacture natural aggregate concrete (NAC) to use in structural concrete, there is potential to use RCA to manufacture recycled aggregate concrete (RAC). While the material performance of RAC compared to NAC is analysed in the existing literature, it is not evident whether the use of RCA in structural concrete results in financial and environmental benefits. Previous literature analysing these aspects mostly focuses on a single area of investigation. This paper presents an integrated methodology for the assessment of the use of RCA replacing NA in structural concrete, considering technical, financial, environmental and social perspectives. Cost-benefit assessment (CBA) has been used to evaluate the internalised impacts as well as external costs concerning the use of both RAC and NAC. The scope of each discipline-focused assessment is presented demarcating the relevant scope for further study, and the specific tools and methodologies to be adopted are specified. Finally, amalgamating the different discipline-focused assessments, a unique approach for comparing a sustainable, alternative raw material for concrete, is presented in this paper. •Methodology studies the suitability of using recycled concrete aggregate in concrete.•The use of recycled concrete aggregate replacing natural aggregate is compared.•Multiple discipline-focused assessments are integrated using cost-benefit analysis.•The net incremental benefit to society is to be evaluated as net present value.