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交通部科学研究院公路研究所和00069部队报据北京市地下铁道工程混凝土施工的需要,于1978年底开始进行后加法流动混凝土的试验研究工作。1979年在地铁工程中试用,同年10月在北京召开了流动混凝土技术座谈会。会议听取了后加法流动混凝土试验研究成果的汇报,参观了北京西直门地铁工地用搅拌车、泵车浇注流动混凝土的现场表
Institute of Highway Branch of the Ministry of Science and Research Institute and 00069 troops reported Beijing subway construction needs of concrete construction, began in late 1978 after the addition of mobile concrete experimental research. In 1979 in the subway project trial, the same year in October held in Beijing, mobile concrete technology forum. After hearing the report of the test results of the post-addition flow concrete test, the meeting visited the site table of the mobile concrete pouring concrete used in the Xizhimen subway construction site in Beijing