In the past few years, with the development of building technology, the performance demand of construction materials is more, especially to the high strength and long perdurability of concrete.
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- 在过去的十几年中,随着建筑技术的发展,人们对结构材料的要求越来越高,尤其是对混凝土的高强性和耐久性的要求越来越高。