厦门梧村地下商业街420m超长顶板,采用跳仓法施工,不留伸缩缝和后浇带,配合比通过掺加大掺量粉煤灰和矿粉,并采用聚羧酸减水剂和优质砂石骨料,控制混凝土温度,重视施工养护工作,达到了减少混凝土收缩,确保工程质量的目的。 420m underground commercial street in Wucun, Xiamen, using the hopper method construction, leaving no expansion joints and post-pouring zone, with the proportion of mixed with high-volume fly ash and slag, and the use of polycarboxylate superplasticizer Quality gravel aggregate, control of concrete temperature, emphasis on construction and maintenance work, to reduce the shrinkage of concrete to ensure project quality purposes.