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AT缓凝高效减水剂于1989年10月通过技术鉴定。该产品由苏州混凝土水泥制品研究院研制,产品性能达到美国ASTMC 494～80外加剂标准,居国内领先水平。产品具有以下特点:混凝土初、终凝时间均延长2～3h;具有显著的早强、增强效
AT retarding superplasticizer passed technical appraisal in October 1989. The product was developed by Suzhou Concrete Cement Research Institute and its product performance has reached the US ASTMC 494-80 admixture standard, ranking the leading domestic level. The product has the following characteristics: The initial and final set time of concrete are all prolonged 2~3h; it has obvious early strength and enhanced effect.