蒲石河抽水蓄能电站上水库面板混凝土抗裂性试验研究

Experimental Studies on Cracking Resistance of Slab Concrete in the Upper Reservoir of Pushihe Pumped-storage Power Station

蒲石河抽水蓄能电站地处寒冷地区,堆石坝面板混凝土的防裂性能关系工程运行安全和长期可靠性。根据混凝土裂缝产生的机理,从原材料优选和配合比设计角度开展研究工作,旨在降低裂缝产生的几率,以及在产生裂缝后有效阻止裂缝的发展。通过混凝土性能试验对比,得到了抗裂性能良好的混凝土配合比。

The Pushihe Pumped-storage Power Station is located in cold region of China. The cracking resistance of slab concrete of rockfill dam in upper reservoir relates closely to the safe operation and reliability of project. Taking into account of the cracking mechanism, the experimental studies on cracking resistance of slab concrete are conducted from the optimum selection of raw materials and the design of mix proportion so as to minimize the occurrence of cracking and prevent the further development of cracks if any. By comparing the tests of concrete performance, the concrete mix proportion with perfect crack resistibility is finally determined.