Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures)
Online ISSN : 2185-6567
ISSN-L : 2185-6567
Paper (In Japanese)
ANALYSIS ON THE EFFECT OF CURING TO REDUCE THE LOSS OF MOISTURE ON QUALITY OF CONCRETE SURFACE
Kenzo WATANABEGoro SAKAINoboru SAKATATetsuya ISHIDA
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2018 Volume 74 Issue 4 Pages 247-255

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Abstract
 Long term curing using Water-Repellent Sheets was applied to seven actual structures and it was confirmed that the substance permeability was improved by a nondestructive test. In addition, the effect of quality improvement was analyzed under blending conditions of concrete such as cement type, unit water volume and water cement ratio. As a result, we confirmed the proportional relationship between water cement ratio of concrete and surface water absorption rate by long term curing and when its water cement ratio is large, its suppressing effect is high. This indicates that the hydration reaction is continued by suppressing dissipation of free water by sheet curing, the concrete surface becomes dense, and the increase in surface water absorption rate can be suppressed.
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© 2018 by Japan Society of Civil Engineers
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