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。

Influence of the Content of Fly Ash on Creep of Concrete Zhang ChengzhiIn the paper, test results of creep of fly ash concrete, in which flyash added is in the range of 0 to 45 percent are given. The content ofgel in concrete is calculated using degree of hydration, the total amountof cementing material, the content of fly ash and chemical compositionof cement and fly ash. Formula for the relationship between the contentof gel and the creep of concrete is derived. Through discussion on thecontent of gel and analysis for the test result, the general relationshipbetween the confent of fly ash and the creep of concrete is obtained, andall the results are explained.