Abstract
Due to its low water content, it is difficult for expansive agent to have an effective expansive effect on high strength concrete to compensate its extensive shrinkage and form a certain expansion. To solve this problem, water-releasing material with water storage and releasing characteristics was incorporated into high strength micro-expansive concrete to provide internal curing, and expansive effect of expansive agent was improved. Migration of water from initially saturated water-releasing material to the surrounding hydrating cement paste was investigated. Based on a given efficient diffusion distance of water stored in water-releasing material, the mass and real water-cement ratio of cured cement paste were estimated. At the same time, the effect of internal curing of water-releasing material on the volume deformation of high strength micro-expansive concrete was investigated.
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Funded by the Project of National Natural Science Foundation (No. 50508034) and Guangxi Key Laboratory for the Advance Materials and New Preparation Technology(No. 063006-5C-13)
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Lu, L., Yang, W., He, Y. et al. Internal curing using water-releasing material for high strength micro-expansive concrete. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 24, 510–513 (2009). https://doi.org/10.1007/s11595-009-3510-5
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DOI: https://doi.org/10.1007/s11595-009-3510-5