一、前言砼砌块国家已定为主导新型墙体材料之一，据有关资料统计，１９９７年建筑砌块的生产量达２９００万，产值在４０亿元左右。但是我们应当看到，目前我国砼砌块生产厂家大多数属乡镇中小型企业，少数是大中型企业。在发展规模、行业状况、生产工艺、技术设备、产品... I. Preface The block country has been designated as one of the leading new wall materials. According to statistics, in 1997, the production volume of building blocks reached 29 million, and the output value was about 4 billion yuan. However, we should see that at present, most manufacturers of concrete blocks in China are small and medium-sized township enterprises, and a few are large and medium-sized enterprises. In the development of scale, industry conditions, production processes, technical equipment, products...