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T-40是八十年代出现的用于混凝土冬期施工的一种低温附加剂,本刊曾刊载过有关 T-40的几篇文章。近年来 T-40的使用有成功的经验,也有失败的教训,本期刊载的一组文章可供读者参考。鉴于这种产品尚未经国家有关部门鉴定,建议研制单位和生产单位尽快提出完整的试验、研究及试点工程资料,编制相应的施工规程,申请进行省级或国家级鉴定,以保证结构安全。
T-40 is a low-temperature additive used in winter construction of concrete in the 1980s. This issue has published several articles on T-40. In recent years, the use of T-40 has had successful experience and failed lessons. A set of articles in this journal is available for readers’ reference. In view of this product has not yet been identified by the relevant state departments, it is recommended that the development unit and the production unit should submit complete test, research and pilot project data as soon as possible, compile the corresponding construction regulations, and apply for provincial or national assessment to ensure the structural safety.