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戈壁地区特殊的气候条件易造成高性能混凝土坍落度损失加快、出现早期塑性收缩裂缝、凝结时间缩短及耐久性降低等。在新建兰新铁路施工过程中,针对上述问题,在混凝土配合比设计,原材料存储、配料,混凝土拌合、运输、浇筑、捣固、抹面、养护等环节过程中采取相应工艺措施,取得较好的控制效果。
Due to the special weather conditions in the Gobi region, the slump loss of high performance concrete tends to be accelerated, early plastic shrinkage cracks occur, the setting time is shortened, and the durability is reduced. In the process of construction of Lan-Xin Railway, in order to solve the above-mentioned problems, we should take corresponding technological measures in concrete mix design, raw material storage, ingredients, concrete mixing, transportation, pouring, stamping, The control effect.