四川省武都水库大坝碾压混凝土施工质量控制

Construction quality control for Sichuan Wudu RCC gravity dam

以四川武都水库大坝工程为例,详细介绍了该工程监理机构具体实施的质量控制措施。碾压混凝土施工质量控制工作分为混凝土浇筑前、浇筑施工和浇筑后3个阶段进行。浇筑前施工质量控制措施主要包括完善质量控制程序和施工准备阶段的检查、审查、审批、测量和试验工作以及碾压混凝土生产性试验等;浇筑施工质量控制手段包括选取主要施工质量控制点和方法以及施工过程质量检查检测等;浇筑后质量控制手段包括无损检测、缺陷修复、钻孔取芯试验和压水试验、安全监测、质量评定和验收以及运行等。质量控制结果表明:武都水库大坝碾压混凝土施工质量得到了有效控制,工程完工至今运行良好。对其他类似工程的混凝土施工质量控制具有良好的借鉴意义。

Taking Wudu RCC gravity dam as an example, we presented in details the implemented quality control measures taken by the engineering supervising company. Roller-compacted concrete(RCC) quality control has three stages, i.e. prior to concrete placement, during concrete placement and after concrete placement. The measures taken prior to concrete placement include: improving quality control procedures;finishing inspecting, reviewing, approving, measuring, and experimenting;performing full-scale experiments on RCC. Measures taken during concrete placement include: selecting major quality control points and measures;quality checking and testing. Measures taken after concrete placement include: non-destructive inspection;defect repairs;core drilling and compressive strength experiments;safety monitoring;quality evaluation;acceptance and operations. In-place concrete test results show that quality control measures for Wudu RCC dam are effective and it operates quite well. The aforementioned measures provide good reference for quality control of other similar projects.