In view of the complex construction conditions of concrete pouring on the side wall of the working well,the key technologies for the preparation and application of high-crack self-compacting concrete were studied from the aspects of concrete working performance,mechanical properties,deformation properties and on-site construction methods.The results show that the developed high-crack self-compacting concrete has excellent fluidity and volume stability,which can meet the pouring construction of the side wall of the large-diameter shield working shaft under complex working conditions,and effectively solves the problem of easy leakage of the side wall of the large-diameter shield working shaft by controlling the concrete cutting height,mold temperature and formwork side pressure,and has significant economic and social benefits.
关键词
工作井侧墙/自密实/高抗裂混凝土/施工技术
Key words
side walls of the working well/self-compacting/high crack resistant concrete/construction techniques
维普
万方数据