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由于我国某些地区粗、中砂的资源短缺或枯竭,运输费用高,多年来已广泛采用F.M.小于1.5的当地的特细砂拌制房屋建筑和构筑物用的混凝土。本文的目的是对特细砂混凝土过去和现在的应用情况以及这种混凝土的质量控制原则与方法作一简明的叙述。文中还列举了几个例子说明特细砂混凝土的实际使用情况。
Due to the shortage or depletion of crude and medium sand resources in some areas of China, transportation costs are high. Over the years, local concrete sand with an F.M. of less than 1.5 has been widely used to mix concrete for houses and structures. The purpose of this paper is to give a concise description of past and present applications of ultra-fine sand concrete and the quality control principles and methods of such concrete. The article also lists several examples of the actual use of ultra-fine sand concrete.