长春工程学院学报（自然科学版）2024，Vol.25Issue(2)：8-12,5.DOI:10.3969/j.issn.1009-8984.2024.02.002
双效膨胀剂在超长连续无缝混凝土施工中的应用
The Application of Double Expansive Agent in the Construction of Ultra Long Continuous Seamless Concrete
摘要
Abstract
Taking a certain ultra long seamless basement project in Fujian as the background,it studies the construction technology of ultra long continuous seamless concrete structures,elaborates on the mechanism of concrete cracks from a micro perspective,abandons single performance concrete expansion agents,im-proves the concrete construction mix proportion,and uses the method of trial mixing and compensating shrinkage concrete.It is combined with the actual engineering structural characteristics at the same time,analyzes the impact of reasonable arrangement of monitoring points on the temperature and micro strain of the basement floor and side walls,conducts real-time health monitoring,and explores the effect of type Ⅱ calcium sulfoaluminate magnesium oxide dual effect expansion agent in the construction of ultra long con-tinuous seamless concrete.The results are indicated that the crack resistance and mechanical properties of concrete meet the practical engineering needs.In the early design,the expansion performance level of the middle reinforcement strip of the concrete bottom plate should be appropriately increased to ensure that the compensating shrinkage concrete has a good crack resistance effect.关键词
超长连续无缝混凝土施工/配合比/硫铝酸钙-氧化镁类双效膨胀剂/健康监测Key words
ultra long continuous seamless concrete construction/mixture ratio/magnesia calcium-sulphoaluminate class double expansive agent/health monitoring分类
建筑与水利引用本文复制引用
祖庆芝,李俊..双效膨胀剂在超长连续无缝混凝土施工中的应用[J].长春工程学院学报（自然科学版）,2024,25(2):8-12,5.基金项目
漳州职业技术学院2021年校级课题(ZZY2021B095)四川省科技厅高新重点研发项目(2021YFG0259) （ZZY2021B095）
