1978年以来由冶金工业部建筑研究总院和镇江焦化厂共同研制成功的JN高效减水剂,经工程应用,效果良好。在冶金工业部基建局组织下,于1980年10月19日至22日,在镇江市召开了JN减水剂技术鉴定会。 JN高效减水剂的研制、生产、使用单位,在鉴定会上详细地介绍了该减水剂的原材料、生产工艺、性能、特点及使用效果,并组织了现场参观。与会代表充分发表意见,进行了热烈认真的讨论 Since 1978, the successful JN superplasticizer jointly developed by the Ministry of Metallurgical Industry Construction Research Institute and Zhenjiang Coking Plant has achieved good results. Under the organization of the Infrastructure and Construction Bureau of the Ministry of Metallurgical Industry, from October 19 to 22, 1980, JN Water-reducing Agent Technical Appraisal Meeting was held in Zhenjiang City. JN high-efficiency water reducer research, production, use units, in the appraisal meeting detailed introduction of the water reducer raw materials, production process, performance, characteristics and use of effects, and organized a site visit. The delegates fully expressed their opinions and conducted heated discussions.