象山水电站土石坝防渗墙塑性混凝土性能试验研究

Experimental study on performance test for plastic concrete of cutoff wall of rock and earth-fill dam for Xiangshan Hydropower Station

结合象山水电站现场施工条件,采用5~31.5 mm连续级配天然砂石做塑性混凝土的粗骨料,且只掺用膨润土,进行了连续级配的槽板式和现浇式塑性混凝土新拌、硬化、变形、相对渗透系数及允许渗透比降等试验性能研究,推荐出合理混凝土配合比,获得了成功应用。

During the construction of Xiangshan Hydropower Station,the natural sandy gravel with the continuous gradation of 5~31.5 mm is used as the aggregate for plastic concrete mixed only with bentonite in accordance with the construction condition in situ,.For the slot-plate and cast-in-situ plastic concretes with continuous gradation,the performance studies on the properties such as newly mixing,hardening,deformation,relative permeability coefficient,allowable seepage gradient etc.are studied,and then reasonable...