End-of-life materials used as supplementary cementitious materials in the concrete industry

Adrian Ionut Nicoara (Author), Alexandra Elena Stoica (Author), Mirijam Vrabec (Author), Nastja Rogan (Author), Sašo Šturm (Author), Cleva Ow-Yang (Author), Mehmet Ali Gülgün (Author), Zejnep Basaran Bundur (Author), Ion Ciuca (Author), Stefan Vasile (Author)

Abstract

A sustainable solution for the global construction industry can be partial substitution of Ordinary Portland Cement (OPC) by use of supplementary cementitious materials (SCMs) sourced from industrial end-of-life (EOL) products that contain calcareous, siliceous and aluminous materials. Candidate EOL materials include fly ash (FA), silica fume (SF), natural pozzolanic materials like sugarcane bagasse ash (SBA), palm oil fuel ash (POFA), rice husk ash (RHA), mine tailings, marble dust, construction and demolition debris (CDD). Studies have revealed these materials to be cementitious and/or pozzolanic in nature. Their use as SCMs would decrease the amount of cement used in the production of concrete, decreasing carbon emissions associated with cement production. In addition to cement substitution, EOL products as SCMs have also served as coarse and also fine aggregates in the production of eco-friendly concretes.

Keywords

construction debris;cement;recycling;circular economy;eco-friendly concretes;fly ash (FA);silica fume (SF);palm oil fuel ash (POFA);rice husk ash (RHA);sewage sludge ash (SSA);sugarcane bagasse ash (SBA);mine tailings;marble dust;construction and demolition debris (CDD);

Data

Language:	English
Year of publishing:	2020
Typology:	1.02 - Review Article
Organization:	UL NTF - Faculty of Natural Sciences and Engineering
UDC:	620.1/.2
COBISS:	33314855
ISSN:	1996-1944
Views:	207
Downloads:	81
Average score:	0 (0 votes)
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