...抗冻耐久性; 界面过渡区 [gap=851]Key words: lightweight aggregate concrete ; fiber ; silica fume; frost resistance durability ; ITZ ...
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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.
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