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1994年8月30日,由岳阳市白银化工厂生产的砂浆混凝土防水剂通过建材检测部门检验鉴定,并投产上市。该产品选用防水剂可以配制出抗渗标号4MPa的混凝土。各项指标均达
On August 30, 1994, the mortar concrete waterproofing agent produced by the Baiyin Chemical Plant of Yueyang City passed the inspection and appraisal by the building materials inspection department and was put into production. The product can be formulated with a waterproofing agent to make concrete with impermeability 4MPa. All indicators reached