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《砌体工程施工及验收规范》GBJ14—66(修订本)(以下简称原规范)附录一中,以硅酸盐水泥拌制的水泥砂浆和水泥混合砂浆的强度增长关系,系引用苏联早期规范的数据。从我国多年来执行的情况来看,特别是在水泥标准从硬练法改为(?)练法以后,有必要通过试验对其加以验证,并作补充和修订。考虑到我国的气候特点以及砌体工程中常用的水泥和砂浆的品种、标号等情况,在本试验中,采用了江苏中国水泥厂的425号普通硅酸盐水泥,甘
The appendix A of the “Code for Construction and Acceptance of Masonry Projects” GBJ14-66 (Revised) (hereinafter referred to as the original specification) refers to the relationship between the strength of cement mortar mixed with Portland cement and cement mortar, and it refers to the early Soviet Union norms. The data. From the perspective of our country’s implementation over the years, especially after the cement standard has been changed from the hard training method to the training method, it is necessary to verify it through experiments, and to supplement and revise it. Considering the climatic characteristics of China and the varieties and labels of cement and mortar commonly used in masonry projects, in this experiment, the ordinary Portland cement No. 425 of the China Cement Factory in Jiangsu Province was used.