The air entraining concrete's shrinkage and creep were less than concrete which not content air entrained agent, and the durability performance was improved obviously.
混凝土的收缩和徐变较不引气混凝土相比较小；耐久性能明显改善。
2
A beam as the base of rail must have strong strength, rigidity, small subsequent creep camber, and excellent durability as well as rapid in const ruction.
桥梁不仅应有足够的强度、刚度以及小的后期徐变变形，同时还应具有良好的耐久性，并且要求实现快速施工。
3
It owns super high mechanical performances, excellent durability, lower shrinkage and creep performances.