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本文介绍了FQY双膨胀源膨胀剂在混凝土中的作用机理以及膨胀剂在成都华尔兹广场地下工程中的应用。通过混凝土原材料的选择、配合比和限制膨胀率的设计、现场施工控制和混凝土养护等一系列措施的实施,证明FQY双膨胀源膨胀剂能够有效补偿混凝土的收缩,简化结构施工工艺,加快施工进度,并且可以有效降低结构的开裂风险,产生可观的经济效益。
This paper introduces the mechanism of FQY double expansive agent in concrete and the application of expansive agent in the underground works of Waltz square in Chengdu. Through the selection of concrete raw materials, design of mix ratio and expansion rate, on-site construction control and concrete curing, a series of measures were taken to prove that FQY double expansion expansive agent can effectively compensate concrete shrinkage, simplify structure construction process and speed up construction progress , And can effectively reduce the risk of structural cracking, resulting in considerable economic benefits.