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An Experimental Study on Structural Concrete Containing Recycled Aggregates and Powder from Construction and Demolition Waste

cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid0000-0002-2124-2530
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid60d9961e-8b25-4388-ab39-903008212ee8
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.abstract.enFor complete utilization of construction and demolition (C&D) waste, an investigation of all size fractions of C&D waste generated during the recycling process should be conducted. In this work, the effects of three recycled concrete materials with different sizes (recycled coarse aggregate (RCA) with a size of 4.75–25 mm, recycled fine aggregate (RFA) of 0.15–4.75 mm, and recycled powder (RP) smaller than 0.15 mm) produced from concrete waste on the fresh and hardened mechanical properties of concrete were evaluated. The replacement ratios of natural coarse and fine aggregates by RCA and RFA were 30, 60, and 100%, and those of ordinary Portland cement for RP were 10, 20, and 30%. The results showed that the concrete properties deteriorated with increasing replacement ratio regardless of the type of recycled materials. The properties were reduced in the order of the use of RFA, RCA, and the simultaneous use of RCA and RFA. In addition, concrete with 30% RP showed lower mechanical strength than concrete with 100% RCA and 100% RFA. However, all concretes could be applicable for structural purposes under different environmental exposure conditions. In particular, concretes with 10% RP and 20% RP showed better cost-benefits compared to natural aggregate concrete with 100% ordinary Portland cement. These promising findings provide valuable initiatives for the effective and complete recycling of C&D waste.
dc.affiliationWydział Inżynierii Środowiska i Inżynierii Mechanicznej
dc.affiliation.instituteKatedra Budownictwa i Geoinżynierii
dc.contributor.authorKim, Jeonghyun
dc.contributor.authorGrabiec, Anna Maria
dc.contributor.authorUbysz, Andrzej
dc.date.access2026-03-09
dc.date.accessioned2026-03-17T12:56:49Z
dc.date.available2026-03-17T12:56:49Z
dc.date.copyright2022-03-26
dc.date.issued2022
dc.description.abstract<jats:p>For complete utilization of construction and demolition (C&amp;D) waste, an investigation of all size fractions of C&amp;D waste generated during the recycling process should be conducted. In this work, the effects of three recycled concrete materials with different sizes (recycled coarse aggregate (RCA) with a size of 4.75–25 mm, recycled fine aggregate (RFA) of 0.15–4.75 mm, and recycled powder (RP) smaller than 0.15 mm) produced from concrete waste on the fresh and hardened mechanical properties of concrete were evaluated. The replacement ratios of natural coarse and fine aggregates by RCA and RFA were 30, 60, and 100%, and those of ordinary Portland cement for RP were 10, 20, and 30%. The results showed that the concrete properties deteriorated with increasing replacement ratio regardless of the type of recycled materials. The properties were reduced in the order of the use of RFA, RCA, and the simultaneous use of RCA and RFA. In addition, concrete with 30% RP showed lower mechanical strength than concrete with 100% RCA and 100% RFA. However, all concretes could be applicable for structural purposes under different environmental exposure conditions. In particular, concretes with 10% RP and 20% RP showed better cost-benefits compared to natural aggregate concrete with 100% ordinary Portland cement. These promising findings provide valuable initiatives for the effective and complete recycling of C&amp;D waste.</jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if3,4
dc.description.number7
dc.description.points140
dc.description.versionfinal_published
dc.description.volume15
dc.identifier.doi10.3390/ma15072458
dc.identifier.issn1996-1944
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/7796
dc.identifier.weblinkhttp://www.mdpi.com/1996-1944/15/7/2458
dc.languageen
dc.relation.ispartofMaterials
dc.relation.pagesart. 2458
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOPEN_JOURNAL
dc.subject.enrecycled coarse aggregate
dc.subject.enrecycled fine aggregate
dc.subject.enrecycled powder
dc.subject.enrecycled aggregate concrete
dc.subject.enconstruction and demolition waste
dc.titleAn Experimental Study on Structural Concrete Containing Recycled Aggregates and Powder from Construction and Demolition Waste
dc.title.volumeSpecial Issue Properties and Novel Applications of Recycled Concrete and Mixed Aggregates
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue7
oaire.citation.volume15