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Wednesday, May 13, 2020 | History

3 edition of An evalution of the ASTM standard method for measuring chemical shrinkage of hydraulic cementitious pastes. found in the catalog.

An evalution of the ASTM standard method for measuring chemical shrinkage of hydraulic cementitious pastes.

Ana Maria Gonzalez

An evalution of the ASTM standard method for measuring chemical shrinkage of hydraulic cementitious pastes.

by Ana Maria Gonzalez

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Published .
Written in English


About the Edition

Hydration is the chemical reaction of cement and water in concrete which produces hydrated compounds such as C-S-H and Ca (OH) 2. These products have a smaller specific volume than the constituents which results in chemical shrinkage. At low water cement ratios external water will not be able to replace the lost volume which results in autogenous shrinkage. Even when drying is prevented, internal shrinkage can occur. In some cases, this can lead to internal micro-cracking. To measure chemical shrinkage the cement paste has to be water saturated to replace the volume decrease due to hydration. Chemical shrinkage can be measured using dilatometry which is based on the direct measurement of the length or volume change of water and is considered a quick test for rates of hydration. The National Institute of Standards and Technology (NIST) has made some efforts to develop a standard test method to evaluate the rate and extent of chemical shrinkage. ASTM C1608-05 was developed and will be evaluated, improvements implemented and sensitivity as well as ruggedness tests performed. Tests were also run at low water cement ratios to look at the effects of chemical shrinkage.

The Physical Object
Pagination320 leaves.
Number of Pages320
ID Numbers
Open LibraryOL21218686M
ISBN 109780494272787
OCLC/WorldCa456826858


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An evalution of the ASTM standard method for measuring chemical shrinkage of hydraulic cementitious pastes by Ana Maria Gonzalez Download PDF EPUB FB2