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建国以来,我国水泥生产有了飞跃的发展,但与工业发达国家相比较,则存在很大差距。工业发达国家的水泥标号一般均相当我国的525号以上,我国水泥总产量中仅有1/3左右是国家统一分配的、大中型水泥厂生产的所谓“大水泥”,其标号一般为425号及525号,其余2/3均为区县水泥厂生产的“小水泥”,质量及标号均没有充分保证。由于大规模经济建设的需要.必须一方面发展生产,增加材料来源,另一方面要求合理使用,节约材料。从节约水泥来说,工业发达国家主要是采用适用技术和先进的工程管理,取得良好的综合技术经济效益,在提高工
Since the founding of the People’s Republic of China, cement production in China has seen rapid development, but there is a big gap compared with industrial developed countries. The cement labels in industrialized countries are generally more than China’s No. 525, and only about one-third of China’s total cement output is the so-called “big cement” produced by the nationally-distributed, medium- and large-scale cement plants. Its number is generally 425. And No. 525, the remaining 2/3 are “small cement” produced by the district county cement plant, and the quality and labeling are not fully guaranteed. Due to the need for large-scale economic construction, it is necessary to develop production on the one hand and increase the source of materials. On the other hand, it requires rational use and material conservation. From the viewpoint of saving cement, the industrialized countries mainly adopt the applicable technologies and advanced project management to achieve good comprehensive technical and economic benefits.