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我国已经从今年元月一日开始执行水泥软练标号,由于水泥软、硬练标号之间没有一个固定的比值,因此在使用软练标号水泥配制混凝土和砂浆时,应根据软练标号水泥与混凝土强度和砂浆强度的关系,按照具体条件进行计算和试配,制订出新的配合比;而不能简单地用软练标号去套换硬练标号,沿用过去的配合比。今年,我局施工技术研究所和各土建公司、构配件公司以及市住宅六公司等单位的试验
China has already implemented the cement softening label from January 1st this year. Because there is not a fixed ratio between cement soft and hard-practice labels, when using soft-scooted cement to prepare concrete and mortar, it should be based on the soft-labeling of cement and The relationship between concrete strength and mortar strength, according to the specific conditions of calculation and test match, to develop a new mix ratio; can not simply use the soft label to replace the hard training label, follow the past mix ratio. This year, the test of the Construction Technology Research Institute of our Bureau, various civil construction companies, construction and accessories companies, and the city’s residential six companies, etc.