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摘要：
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低温条件下扭王字块预制的质量较常温下更加难以保证,松顶、气泡多和裂缝多等质量"常发病"经常困扰着工程技术人员。文章介绍了辽宁红沿河核电厂护岸工程低温条件下预制扭王字块的施工过程和持续改进的施工方法等,并对气泡、裂缝等质量问题产生的原因作了分析总结,重点提出了在北方地区低温条件下扭王字块预制的主要工艺和质量控制要点及改进措施,供类似项目参考。
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It is more difficult to control the quality of the prefabrication of twisted multi-leg blocks at low temperatures than at normal temperatures and the"frequently encountered quality problems"like loose top,bubbles and cracks in the blocks often put the engineering personnel in a difficult position.This paper presents the process of prefabrication of twisted multi-leg blocks at low temperatures and the construction methods being incessantly improved for the construction of the revetments for Hongyanhe Nuclear Power Plant in Liaoning Province.A summary and analysis of the causes of the quality problems like bubbles and cracks is given.The major technological process,key points in quality control and measures for improvement for the prefabrication of twisted multi-leg blocks at low temperatures in northern regions are emphatically proposed for the reference of similar projects.
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