摘要
Abstract
During the construction of rock-bolted crane girders concrete in the underground powerhouse of Tian-tai Pumped Storage Project in Zhejiang Province,a series of measures to control and prevent concrete cracks have been taken,such as optimizing concrete mix ratio,protecting sand and aggregate on site,delaying mold re-moval time,adding cooling pipes inside the rock-anchored beams,reducing the temperature of concrete ware-housing,and reducing the slump of concrete.Through the practice of this project,a set of reasonable and feasi-ble control and prevention measures are summarized,which can well control the concrete temperature and cracks and achieve effect of mirror concrete.关键词
天台抽水蓄能电站/地下厂房/岩壁吊车梁/温度控制/施工Key words
Tiantai Pumped Storage Project/Underground powerhouse/Rock-bolted crane girders/Temperature control/Construction分类
建筑与水利
