利用粘土或粘土页岩,经过热处理来制得烧粘土混合材料的方法,已为很多单位所重视。因为它能够在一定程度上缓和天然火山灰质混合材料不易找到的困难。虽然在制造烧粘土混合材料时要化费一些人力物力,但是它却能在提高水泥产量、节约水泥与改善混凝土质量等方面得到补偿。梅山水库工程利用烧白土的事实,就是一个很好的例子。粘土的组成是十分复杂的,除含有大量的粘土矿物之外,一般还含有石英细砂、氧化铁及有机物等物质。粘土矿物的种类很多,近代的矿物学将其分为高 The use of clay or clay shale, after heat treatment to obtain a mixture of burned clay, has been valued by many organizations. Because it can to some extent ease the difficulties of natural pozzolanic hybrid materials difficult to find. Although it takes a lot of manpower and material resources to make the clay blending material, it can be compensated for in terms of increasing cement output, saving cement, and improving concrete quality. The fact that the Meishan Reservoir Project uses burnt clay is a good example. The composition of clay is very complicated. In addition to containing a large amount of clay minerals, it generally contains quartz fine sand, iron oxide and organic matter. There are many types of clay minerals, which were classified as high by modern mineralogy