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本文给出了在(0—45%)范围内粉煤灰混凝土徐变的试验结果。结合水化程度,混凝土中的胶凝材料总量、粉煤灰掺量以及水泥和粉煤灰的化学组成,计算了混凝土中凝胶体含量。并推导了混凝土中凝胶体含量与混凝土徐变之间的关系表达式。通过对凝胶体含量的讨论以及对实验结果的分析,找出了粉煤灰掺量与混凝土徐变之间的关系,由此解释了以往国内外研究者对这个问题的两种截然不同的实验结果。
This paper presents the experimental results of creep of fly ash concrete in the range of (0-45%). Combining the degree of hydration, the total amount of cementitious materials in the concrete, the amount of fly ash added, and the chemical composition of the cement and fly ash, the gel content in the concrete was calculated. The relationship between gel content in concrete and creep of concrete was deduced. Through the discussion of the gel content and the analysis of the experimental results, the relationship between the fly ash content and the concrete creep was found out, which explained the previous two domestic and foreign researchers’ two different opinions on this issue. Experimental results.