Based on present situation and main subject for high strength concrete at minus-temperature in this ten years, it was investigated that the design of mix, freezing model, development rule of strength, resistant frost critical strength, damage process, reliability, anti-freezing agent action mechanisminvolve major matters of principle in winter construction concreting.

回顾与总结了近十年来我国负温高强混凝土技术的研究状况与主要研究问题,涉及到负温高强混凝土的配合比设计、冻结模式、强度发展规律、抗冻临界强度、损伤过程、可靠度、防冻剂作用机理等问题,说明了我国冬期施工在这一领域中所取得的主要成果,并提出了供讨论用的负温高强混凝土今后的研究方向。

Based on law of non—statistics method, the quality rule for selection of antifreezing admixturein winter concreting was analysed, and the acceptance boundary line of concrete strength to select antifreezing admixture type in different weather conditions was also presented.

用非统计法原理分析了冬施中砼防冻剂选用的质量原则,并根据不同气温条件下,选用防冻剂品种,给出了控制冬期砼施工质量的防冻剂砼强度验收界限,供施工单位参考。