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在实际中,当混凝土在短时间内于固定搅拌器中搅拌,其假凝现象通常是显见的。解释假凝的出现有不同的理论。然而,没有一种理论能概括所有问题并清楚阐述有关水泥熟料的物理化学特性。而影响水泥假凝趋势的凝结控制剂仍未见报道。本文研究的目的在于根据ASTM建立多种因素对假凝的影响。诸如:生产过程、C_3S含量、比表面积、粒度分布、助磨剂、粉磨和贮存过程的温度,还展现ASTM型早硬水泥(假凝不少于70％)的试验结果。
In practice, the phenomenon of false coagulation is usually evident when the concrete is stirred in a fixed stirrer for a short period of time. There are different theories to explain the emergence of false coagulation. However, no one theory can summarize all the problems and clearly state the physicochemical properties of cement clinker. However, there have been no reports on the coagulation control agents that affect the trend of false coagulation of cement. The purpose of this study is to establish the influence of various factors on false coagulation according to ASTM. Such as: production process, C_3S content, specific surface area, particle size distribution, grinding aid, grinding and storage process temperature, also shows ASTM type early cement (false coagulation not less than 70%) test results.