新型复合混凝土缓凝剂的研究淮南矿业学院聂容春，彭成松，倪修全在大型混凝土工程中，为使混凝土体积收缩膨胀均匀而希望延缓混凝土凝结时间；在炎热地区或高温季节施工、浇灌或运输，也要求混凝土的凝结慢些，否则会因混凝土的凝结过快，而使稠度增大而影响施工。混凝土... Research on a new type of composite concrete retarder Huainan Mining Institute Nie Rongchun, Peng Chengsong, Ni Xiuquan In large-scale concrete projects, in order to make the volume shrinkage and expansion of the concrete uniform and hope to delay the concrete setting time; construction, irrigation or transport in hot areas or hot seasons, also It is required that the concrete condenses slowly, otherwise the concrete will condense too quickly and the consistency will increase and affect the construction. Concrete...