近几年，国家对基础设施建设投资力度不断加大，特别是进入２０世纪９０年代，中国城市化进程驶入高速发展期，城市基础设施建设突飞猛进。在各大中城市建设中，施工建设场地越来越狭窄，粉尘及噪声等污染扰民现象日趋严重；同时水利、电力、路桥、机场和港口建设也对混凝土的? In recent years, the country’s investment in infrastructure construction has continued to increase. Especially since the 1990s, China’s urbanization process has entered a period of rapid development and urban infrastructure has grown by leaps and bounds. In the construction of large and medium-sized cities, construction sites are becoming more and more confined, and dust, noise, and other pollution have become increasingly serious. At the same time, water conservancy, electricity, roads, bridges, airports and ports have also been used for concrete construction.