FREEZE-THAW RESISTANCE OF CONCRETE SUBJECTED TO DRYING AT EARLY AGES
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Published:2002
N Yuasa, Y Kasai, I Matsui, E Kamada, 2002. "FREEZE-THAW RESISTANCE OF CONCRETE SUBJECTED TO DRYING AT EARLY AGES", Challenges of Concrete Construction: Volume 6, Concrete for Extreme Conditions: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9–11 September 2002, Ravindra K. Dhir, Michael J. McCarthy, Moray D. Newlands
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Freeze-thaw expansion of concretes is mainly controlled by air. However with a 4.5 % of air content, considerable may occur when subjected to dying at early ages depending on the types of cement and water-cement ratios. The use of blended cement with a high water-cement ratio should be accompanied by sufficient moist curing at early ages. Difference in pore volume at the radius ranging from 180 to 1,000 run was found between damaged and undamaged. Freeze-thaw scaling also increased when drying initiation age became earlier. Amount of scaling was highly correlated to a pore of surface layer concrete, especially to a pore volume of larger than 56 nm in the radius. These pore regions increased are likely to increase when subjected to drying at early ages.
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