从1980年1月1日开始,国家规定,在水泥混凝土各项工程中,一律改用新标准水泥。新标准水泥的性质与旧标准水泥(硬练)不同,短期内还不易摸透它的全部性能,在配制路面混凝土中也是如此。笔者有幸参加了由公路规划设计院和同济大学主持的水泥混凝土路面研究这项科研的部分工作,对新标准水泥的使用性质略有所学,下面仅就用 From January 1, 1980 onwards, the state regulations, in all concrete cement projects, all use the new standard cement. The properties of the new standard cement are different from those of the old standard cement (hardworking) and their full performance is not easily detectable in the short term, as is the case with pavement concrete. I was fortunate enough to participate in this part of the research work of the cement concrete pavement presided by the Highway Planning and Design Institute and Tongji University, the nature of the use of the new standard cement a little learned, the following only use