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dc.contributor.authorVegas, Iñigo
dc.contributor.authorBroos, Kris
dc.contributor.authorNielsen, Peter
dc.contributor.authorLambertz, Oliver
dc.contributor.authorLisbona, Amaia
dc.date.accessioned2016-06-22T10:02:08Z
dc.date.available2016-06-22T10:02:08Z
dc.date.issued2015-01-30
dc.identifier.citationCONSTRUCTION AND BUILDING MATERIALS, Volume: 75, 2015, Pages: 121-128en
dc.identifier.issn1879-0526en
dc.identifier.urihttp://hdl.handle.net/11556/259
dc.description.abstractRecycled aggregates of high-purity, guaranteeing optimal technical and environmental performance, are required for high-grade construction applications such as concrete. The main problem constituents causing a decrease in the quality of recycled aggregates to be used in high grade applications are: organic material, gypsum and autoclaved aerated concrete (AAC). This paper studies the potential of Near Infrared (NIR) sorting technology to improve the quality of mixed recycled aggregates. Tests were carried out by using samples of mixed recycled aggregates collected in different EU countries (Germany, Sweden, Spain and Italy). Constituents, total sulphur content, acid soluble sulphates, total heavy metals and metal leaching were determined before and after the use of the NIR sorting technology. The results clearly indicate that the problematic fractions (organic material, gypsum and AAC) in the mixed recycled aggregates can be significantly reduced or even eliminated during the NIR sorting treatment, boosting a greater use of recycled aggregates in high grade applications such as concrete manufacturing.en
dc.description.sponsorshipThis research work was funded under the 7th Framework Programme of Research and Technology Development of the EU IRCOW Grant Agreement No. 265212en
dc.language.isoengen
dc.publisherELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDen
dc.titleUpgrading the quality of mixed recycled aggregates from construction and demolition waste by using near-infrared sorting technologyen
dc.typearticleen
dc.identifier.doi10.1016/j.conbuildmat.2014.09.109en
dc.isiYesen
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/265212/EU/Innovative Strategies for High-Grade Material Recovery from Construction and Demolition Waste/IRCOWen
dc.rights.accessRightsembargoedAccessen
dc.subject.keywordsConstruction and demolition waste (C&DW)en
dc.subject.keywordsRecycling technologiesen
dc.subject.keywordsNear Infrared (NIR)en
dc.subject.keywordsLeachingen
dc.subject.keywordsRecycled aggregatesen
dc.subject.keywordsCONCRETEen
dc.subject.keywordsCLASSIFICATIONen
dc.subject.keywordsBEHAVIORen
dc.subject.keywordsREMOVALen
dc.subject.keywordsMORTARen
dc.subject.keywordsSYSTEMen


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