前言粘土质原料是水泥工业的主要原料之一。在我国北方湿粘土质原料冬天都会冻结成块,简称为冻土。凡温度为负温或零温,并且含有冰的各种土均称为冻土。我们说冻土,并不是说土颗粒冻了,而是指土中水的冻结。而只有负温的干 Introduction Clay-based raw materials are one of the main raw materials for the cement industry. In the north of China, the raw materials of wet clay will freeze into pieces in winter, referred to as frozen soil for short. Any soil that has a negative or zero temperature and contains ice is called frozen soil. We say that frozen soil does not mean that soil particles are frozen, but refers to the freezing of water in the soil. And only negative temperature dry