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In-Situ Hydration of a Dry Concrete Mix

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  034003,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.14082) @2003
Authors:   David R Bohnhoff, Zachary D. Hartjes, David W. Kammel, Nathan P. Ryan
Keywords:   Concrete, Cement, Cement hydration, In-situ hydration, Hydration, Concrete placement, Dry concrete mix, Concrete moisture content, Concrete testing

Hydration of a dry concrete mix after the mix has been covered with soil is herein referred to as in-situ hydration. In this study, a series of dry concrete mix footings were hydrated in-situ by burying them in sand and subjecting them to different water treatments. Footings were removed and cored at 4, 12 and 24 weeks. Compression tests on these cores showed that in-situ hydration could produce concrete with strength comparable to a normally hydrated mix. Additional research is needed to determine how in-situ hydrated concrete strength is affected by aggregate properties, initial compaction, confinement pressure, dry mix uniformity after placement, as well as conditions related to water movement into the confined mix.

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