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基于典型的高性能混凝土损伤评价模型,提出了与损伤评价模型相应的损伤评价准则。从冻融循环次数、水胶比、含气量3个因素出发,探讨了冻融作用下高性能混凝土相对动弹模量的计算方法。结合24组试验数据,拟合得到了冻融作用下高性能混凝土相对动弹模量的计算表达式,结果表明新的计算表达式合理可行。
Based on the typical high performance concrete damage evaluation model, the damage evaluation criteria corresponding to the damage evaluation model are proposed. Starting from the three factors of freeze-thaw cycle, water-cement ratio and gas content, the calculation method of relative dynamic elastic modulus of high-performance concrete under freezing-thawing is discussed. According to the experimental data of 24 groups, the calculation expression of the relative dynamic elastic modulus of high performance concrete under the action of freeze-thaw is obtained. The result shows that the new calculation expression is reasonable and feasible.