Characterizing Lightweight Aggregate Desorption at High Relative Humidities Using a Pressure Plate Apparatus

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dc.contributor.authorPour Ghaz, Mohammad
dc.contributor.authorCastro, Javier
dc.contributor.authorKladivko, Eileen J.
dc.contributor.authorWeiss, Jason
dc.date.accessioned2024-01-10T13:46:43Z
dc.date.available2024-01-10T13:46:43Z
dc.date.issued2012
dc.description.abstractThis paper describes the results of an experimental study that was performed to obtain desorption isotherms for a wide range of fine lightweight aggregates that are used commercially in North America. The desorption isotherms were determined for the entire gradation of the fine lightweight aggregates (as received). To obtain the desorption isotherms a pressure plate apparatus (porous plate) was used. The pressure plate enables the desorption isotherm to be measured at high relative humidities (beginning at 100%). In addition to providing experimental results obtained with the pressure plate method, desorption results obtained by gravimetric desorption and dynamic vapor desorption methods are also provided. The gravimetric desorption and dynamic vapor desorption methods are generally used at lower relative humidities (98% and 0% relative humidity). The results indicate that water leaves the fine lightweight aggregates at relative humidities as high as 99.9%. This suggests that internal curing water is available to the cement matrix even at relatively high water-to-cement ratio mixtures when the suction forces exerted by cement paste are small. The results of this work are helpful for the development of mixture proportioning techniques and numerical simulation for internally cured concrete mixtures. DOI: 10.1061/(ASCE)MT.1943-5533.0000422. (C) 2012 American Society of Civil Engineers.
dc.description.funderExpanded Shale, Clay and Slate Institute (ESCSI)
dc.fechaingreso.objetodigital2024-04-25
dc.format.extent9 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1061/(ASCE)MT.1943-5533.0000422
dc.identifier.issn0899-1561
dc.identifier.urihttps://doi.org/10.1061/(ASCE)MT.1943-5533.0000422
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/79193
dc.identifier.wosidWOS:000311387900002
dc.information.autorucIngeniería;Castro J;S/I;15224
dc.issue.numero8
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final969
dc.pagina.inicio961
dc.publisherASCE-AMER SOC CIVIL ENGINEERS
dc.revistaJOURNAL OF MATERIALS IN CIVIL ENGINEERING
dc.rightsacceso restringido
dc.subjectDesorption isotherm
dc.subjectDrying shrinkage
dc.subjectInternal curing
dc.subjectLightweight aggregate
dc.subjectMoisture retention
dc.subjectPorous plate apparatus
dc.subjectPressure membrane extractor
dc.subjectPressure plate
dc.subjectSelf-desiccation
dc.subjectShrinkage cracking
dc.subjectCONCRETE
dc.subjectABSORPTION
dc.subjectMORTAR
dc.subject.ods12 Responsible Consumption and Production
dc.subject.odspa12 Producción y consumo responsable
dc.titleCharacterizing Lightweight Aggregate Desorption at High Relative Humidities Using a Pressure Plate Apparatus
dc.typeartículo
dc.volumen24
sipa.codpersvinculados15224
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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