长期老化降低了橡胶粉沥青混合料的低温性能。
Long term aging lowered the low temperature performance of rubber powder asphalt mixture.
在对梁的受拉伸与自重情形下的老化作了分析后，举例分析了真实固体火箭发动机药柱的长期老化效应。
After having solved the aging problems of beams, the long term aging effect of a solid propellent grain is also analyzed as an example.
长期老化后，混合料的破坏拉伸应变降低：再生沥青混合料降低幅度为17.4%，新沥青混合料降低幅度为12.2%。
The damage tensile strain of asphalt mixture decreases after long-term aging:17.4% for recycled asphalt mixture and 12.2% for new asphalt mixture.
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