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Lightweight Aggregate as Internal Curing Agent to Limit Concrete Shrinkage
dc.contributor.author | Browning, JoAnn | |
dc.contributor.author | Darwin, David | |
dc.contributor.author | Reynolds, Diane | |
dc.contributor.author | Pendergrass, Benjamin | |
dc.date.accessioned | 2017-03-02T20:55:52Z | |
dc.date.available | 2017-03-02T20:55:52Z | |
dc.date.issued | 2011 | |
dc.identifier.citation | Browning, J., Darwin, D., Reynolds, D., and Pendergrass, B., “Lightweight Aggregate as Internal Curing Agent to Limit Concrete Shrinkage,” ACI Materials Journal, Vol. 108, No. 6, Nov.-Dec. 2011, pp. 638-644. | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/23331 | |
dc.description.abstract | The effectiveness of prewetted, vacuum-saturated (PVS) lightweight aggregate (LWA) as an internal curing agent to reduce concrete shrinkage is evaluated for curing periods of 7 and 14 days. Normalweight aggregate is replaced by LWA at volume replacement levels ranging from 8.9 to 13.8%. Some mixtures contain a partial replacement of portland cement with slag cement while maintaining the paste content at approximately 24.1% of concrete volume. Comparisons are made with mixtures containing low-absorption granite and high absorption limestone normalweight coarse aggregates. At the replacement levels used in this study, PVS LWA results in a small reduction in concrete density, no appreciable effect on concrete compressive strength, and a substantial decrease in concrete shrinkage for drying periods up to 365 days. Increasing the curing period from 7 to 14 days reduces concrete shrinkage. Thirty and 60% volume replacements of portland cement by slag cement result in reduced shrinkage when used with a porous LWA or normalweight aggregate. After 30 and 365 days of drying, all mixtures with LWA exhibited less shrinkage than the mixtures with either low- or high-absorption normalweight aggregates. | en_US |
dc.publisher | American Concrete Institute | en_US |
dc.relation.isversionof | https://iri.ku.edu/reports | en_US |
dc.subject | Bridge decks | en_US |
dc.subject | Cracking | en_US |
dc.subject | Curing | en_US |
dc.subject | Drying shrinkage | en_US |
dc.subject | Lightweight aggregate | en_US |
dc.subject | Slag cement | en_US |
dc.subject | Vacuum saturation | en_US |
dc.title | Lightweight Aggregate as Internal Curing Agent to Limit Concrete Shrinkage | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Darwin, David | |
kusw.kudepartment | Civil/Environ/Arch Engineering | en_US |
kusw.oastatus | na | |
dc.identifier.orcid | https://orcid.org/0000-0001-5039-3525 | |
dc.rights.accessrights | openAccess |