冻融条件下混凝土性能衰减过程评价方法优化研究

采用混凝土的质量评价参数w1和动弹性模量评价参数w2,以及设计的评价参数w来反映混凝土在冻融循环条件下的性能劣化过程,寻出最佳的混凝土性能衰减评价方法。结果表明:评价参数w1、w2及设计的w能反映混凝土性能劣化或失效的过程,评价参数适用相同判定标准,判定法则简单、方便,新设计的参数避免了质量评价参数w1和动弹性模量评价参数w2不一致情况的出现,更加的直观合理,推荐使用新的评价方法。

The optimization research of methods of concrete perfoamance evaluation under the condition of freezing and thawing

Using the quality evaluation of the parameter of concrete w1,dynamic modulus of elasticity evaluation parameter w2 and the designed evaluation parameters w to characterize the properties of fly ash concrete deterioration in the freeze-tha cycle conditions,To find out the best attenuation method to evaluate the performance of concrete.The result show that： Evaluation parameter w1,w2 and the designed parameter w can reflect the process of deterioration and failure,Evaluation parameters apply to the same criteria,The rule is simple and convenient,The new designed parameter w avoid the inconsistency between the quality evaluation of the parameter of concrete wl and dynamic modulus of elasticity evaluation parameter w2,is more intuitive and reasonable,It is recommended to use the new evaluation method.