Study on Crack Prevention Measures of Mass RCC Dams

Abstract:

Actually, both simple construction and fast construction are advantages of RCC dams. In view of taking strict temperature control measures, those are turned to be disadvantages instead. The way of fast pouring and the measure of controlling the placing temperature are introduced to RCC dams and 6 cases are analyzed separately to explain the effect of their crack prevention. It is concluded that controlling only the last layer placing temperature of concrete lifts can remarkably decrease the stress of working plane concrete during off period. Furthermore, the pouring way of thick lifts and short off period do not deteriorate the temperature and stress but rather has an impressive effect on crack prevention and construction period contraction.

• Periodical: Advanced Materials Research (Volume 743)
• Pages: 3-8
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.743.3
• Online since: August 2013
• Authors: Jian Guo Jing, Min Zhi Liu, Shao Jun Zeng, Lin Xu
• Keywords: Crack Prevention, Fast Pouring, Placing Temperature, RCC Dam, Short Off Period, Thick Lift

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