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.

• 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。