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1987年我国首次颁布了GB 8076-87《混凝土外加剂质量标准》,在以后的若干年里,我国又陆续颁布了一系列外加剂标准。现在,我国商品混凝土生产中几乎100%使用了外加剂,它已成为混凝土材料不可缺少的组成部分,成为水泥混凝土的第五组分。但由于混凝土外加剂种类繁多,化学性能复杂,又加之工程应用类型众多,施工环境多变,原材料规格各异,如何正确选择和科学使用外加剂,一直是广大工程建设者研究和探索的课题。本期我们诚邀相关专业技术人员对此话题展开讨论。
In 1987, China first promulgated GB 8076-87 “Concrete admixture quality standards”, in the next few years, China has promulgated a series of admixture standards. Nowadays, almost 100% of the commercial concrete products in China use admixture. It has become an indispensable part of concrete materials and becomes the fifth component of cement concrete. However, due to the variety of concrete admixtures, complex chemical properties, numerous types of engineering applications, varying construction environments and different raw material specifications, how to correctly select and use admixtures scientifically has always been the subject of extensive research and exploration by project builders. This issue we invite relevant professional and technical personnel to discuss this topic.