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由中国建材研究院水泥所研究开发的新型混凝土外加剂——LH 流化剂于1991年4月13日在北京通过了技术鉴定。流化剂的应用始于1974年,原联邦德国最先采用三聚氰胺高效减水剂作为混凝土流化剂,制备流态混凝土。以后,日、美、英、法等国相继效法,对常用水泥分散剂进行改性,制备成流化剂以满足工程的需求。
The new concrete admixture researched and developed by the Institute of Cement of China Building Materials Research Institute, LH Fluidizer, passed the technical appraisal in Beijing on April 13, 1991. The application of fluidizing agents began in 1974. The former Federal Republic of Germany first used melamine superplasticizers as concrete fluidizers to prepare fluid concrete. Later, Japan, the United States, Britain, France and other countries have followed suit and modified commonly used cement dispersants to prepare fluidizers to meet the needs of the project.