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简述了研制ＨＪＤ－２砼防冻剂性能。实验结果表明：ＨＪＤ－２砼防冻剂性能满足ＪＣ４７５－９２行标一级品规定的指标，负温下强度增长率明显，可满足不同温度的砼冬季施工。
The performance of HJD-2 concrete antifreeze was described briefly. The experimental results show that the properties of HJD-2 concrete antifreeze meet the requirements of JC475-92 standard products, and the strength increase rate at negative temperature is obvious, which can meet the winter construction of concrete at different temperatures.