Assessing Lightweight Aggregate Efficiency for Maximizing Internal Curing Performance

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dc.contributor.authorPaul, Alvaro
dc.contributor.authorLopez, Mauricio
dc.date.accessioned2024-01-10T13:46:05Z
dc.date.available2024-01-10T13:46:05Z
dc.date.issued2011
dc.description.abstractInternal curing (IC), which has been extensively investigated in the last decade, has been shown to enhance hydration, diminish autogenous shrinkage, and mitigate early-age cracking due to self-desiccation in high-performance concrete. It also increases the internal porosity of concrete, however, which might reduce mechanical properties. Thus, a better understanding of what makes a lightweight aggregate (LWA) effective and efficient for IC is fundamental to maximize the gains and minimize the shortcomings.
dc.description.abstractThis study analyzes the performance of a wide set of LWAs for IC, including artificial and natural LWAs. The water uptake, water release, and pore structure of the LWAs were determined, as well as their performance in concrete, which was assessed using the degree of hydration, compressive strength, chloride ion permeability, and autogenous shrinkage. The results showed that natural LWAs possess higher, coarser, and more interconnected porosity than artificial LWAs. This allows natural LWAs to store more water and present higher and faster water release for IC. Natural LWAs produced concrete with a similar or better performance than that of artificial LWAs in spite of requiring lower dosages. When selecting an LWA for IC, it is important to consider not only its effectiveness in reducing autogenous shrinkage, but also its efficiency and other performance criteria, such as transport properties and compressive strength.
dc.description.funderChilean Council for Science and Technology Research (Conicyt)
dc.format.extent9 páginas
dc.fuente.origenWOS
dc.identifier.issn0889-325X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/79118
dc.identifier.wosidWOS:000293106800005
dc.information.autorucIngeniería;Lopez M ;S/I;7202
dc.issue.numero4
dc.language.isoen
dc.nota.accesoSin adjunto
dc.pagina.final393
dc.pagina.inicio385
dc.publisherAMER CONCRETE INST
dc.revistaACI MATERIALS JOURNAL
dc.rightsregistro bibliográfico
dc.subjectautogenous shrinkage
dc.subjectdegree of hydration
dc.subjecthigh-performance concrete
dc.subjectinternal curing
dc.subjectlightweight aggregates
dc.subjectmicrostructure
dc.subjectHIGH-STRENGTH CONCRETE
dc.subjectAUTOGENOUS SHRINKAGE
dc.subjectCEMENT PASTE
dc.subjectWATER
dc.subject.ods12 Responsible Consumption and Production
dc.subject.odspa12 Producción y consumo responsable
dc.titleAssessing Lightweight Aggregate Efficiency for Maximizing Internal Curing Performance
dc.typeartículo
dc.volumen108
sipa.codpersvinculados7202
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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