我公司在1964年利用普通硅酸盐水泥作胶结料(砂、石利用密实级配法)作防水混凝土,并经过数十个工厂、上百个防水工程的使用,在1970年试验混凝土中掺化学促凝剂加速冬季施工的基础上,坚持“自力更生,艰苦奋斗,破除迷信,解放思想”,大搞科学实验,经过两年来几十次反复试验,在矿渣 In 1964, our company used ordinary portland cement as cementing material (sand and stone use dense gradation method) as waterproof concrete and was used in dozens of factories and hundreds of waterproof projects. It was mixed in test concrete in 1970. Chemical accelerating agents accelerating winter construction, adhere to the principle of “self-reliance, hard work, breaking down superstitions, and emancipating the mind” and engaged in scientific experiments. After tens of trials in two years, the slag