研究结果表明：碾压混凝土抗冻耐久性的最佳含气量为5%。
The test results are shown: The optimum air content value for RCC resistance to frost-thaw durability is about 5%.
最后，本文提出用BP神经网络预测混凝土抗冻耐久性系数的方法。
Finally, a new approach (BP Network) to predicting the durability factor of concrete has been proposed here.
西北高寒干燥地区的碾压混凝土工程，由于引气困难，导致其抗冻耐久性得不到保证。
Freezeproof durability of roll compacted concrete engineering in northwest cold and dry areas can not be guaranteed because entrainment of air is difficult.
通过对试验数据的整理分析，给出提高混凝土构件的表观抗冻耐久性的合理配合组成。
After analyzing the trial data, it gives the reasonable mix proportions for enhancing apparent freezing and thawing resistance durability of concrete member.
矿渣混凝土的抗冻融耐久性明显优于同等级的普通混凝土；
The freeze thaw durability of GGBS concrete is much better than the same strength OPC concrete.
抗冻性是道路水泥混凝土主要的特性，它在很大程度上决定着水泥混凝土路面的耐久性。
Freeze resisting property is the main function of the road cement concrete. It determines the enduring property of the cement concrete pavement.
总之在大量的实验基础上，对不同掺量的超细矿渣粉高性能混凝土的强度、体积稳定性、抗冻性等耐久性进行了全面的分析。
In a word, based on plenty of experiment, the intensity, volume stability and freezing-resistance of this new kind of high performanced concrete have been completely analyzed.
混凝土抗冻融300次时，动弹性模量为97%，混凝土具有优良的抗冻融耐久性。
The concrete with this product has excellent anti-frost durability, with a relative dynamic elastic modulus of 97% after 300 cycles of freezing-and-thawing.
通过大量试验，系统研究了人工砂高性能混凝土的耐久性，对抗渗性、抗冻性、氯离子扩散系数等项目进行了测试。
Through a great deal of experiments, the durability of HPC with artificial sand are studied systematically. Impermeability, freezing resistance and chloride ion diffusion are tested.
阐述了提高混凝土抗冻融耐久性的措施，分析了引气剂对提高混凝土抗冻融的效果及其影响因素。
Through the analysis of the damage mechanism of concrete freezing and thawing, the article puts forward some measures to improve the durability of hydraulic structures.
阐述了提高混凝土抗冻融耐久性的措施，分析了引气剂对提高混凝土抗冻融的效果及其影响因素。
Through the analysis of the damage mechanism of concrete freezing and thawing, the article puts forward some measures to improve the durability of hydraulic structures.
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