济南银河大厦超长超厚基础底板的裂缝控制

Crack control of super-long and super-thick foundation slab of Jinan Galaxy Mansion

济南银河大厦主楼基础筏板厚度 3米 ,裙房筏板厚度 1 5米 ,混凝土量达 180 0 0m3,7月下旬炎热季节泵送连续无缝一次浇筑。本文介绍该工程采用优质粉煤灰、膨胀剂及超缓凝型泵送剂降低水化热 。

? In Jinan Galaxy Mansion,the thickness of raft plate of main floor basement is 3 meter,the annex is 1 5 meter,total concrete quantity reached about 18000m 3,It was cast by continuous pumping deliver in torrid season in July.In this text,itwas recommended that the engineering adopt the technology of reducing hydrous heat and controlling the crack of super long,super thick,massive concrete by using fine fly ash,expansive agent and super retarding pumping agent. 〔