Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 38, Issue -, Pages 804-812Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2012.09.058
Keywords
Cement mortar; Pore structure; Water-to-cement ratio; Curing time
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Funding
- National Natural Science Foundation of China [50979032]
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The effect of water-to-cement ratio (w/c) and age on the pore structure of cement mortar was determined through mercury intrusion porosimetry (MIP). The cement mortar specimens were prepared with w/c of 0.4, 0.5 and 0.6, and were tested at different curing ages (14, 28, 180 days). The degree of hydration of the cement in cement mortar was obtained by determining the non-evaporable water content. Test results have shown that, the degree of hydration increased with increasing curing time and water-to-cement ratio of the cement mortar for the ages of cement mortar varying between 14 and 180 days. An increase in the water-to-cement ratio increases the total porosity. In addition, the existing models of pore size distribution of cement-based materials has been reviewed and compared with test results in this investigation. (C) 2012 Elsevier Ltd. All rights reserved.
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