摘   要：通过混凝土强度试验，研究了水灰比、缓凝剂掺量、自然温度养护、防冻剂等因素对硫铝酸盐水泥混凝土凝结时间和强度特性的影响。结果表明，适宜掺量的硼酸缓凝剂可以延长硫铝酸盐水泥混凝土凝结时间，且不会降低混凝土早期强度；养护温度和水灰比对硫铝酸盐水泥混凝土强度发展有显著影响；低温或负温施工时通过添加适量防冻剂或采取简单保温措施，硫铝酸盐混凝土可获得良好的早强和负温工作性能，能够大大缩短西北高寒干旱区混凝土施工工期，并延长混凝土年施工期2～4个月。

Abstract: Considering the water-cement ratio, retarder dosage, natural temperature and anti-freezing agent factors, the setting time and strength of sulphoaluminate cement concrete are studied by the concrete strength experiment. The results indicate that the setting time of sulphoaluminate cement concrete can be extended by adding a appropriate content of boric acid retarder, which will not reduce concrete’s early strength. The curing temperature and water-cement ratio have a significant effect on the strength development of the sulphoaluminate cement concrete. By adding a appropriate content of anti-freezing agent or taking a simple heat preservation measures, the sulphoaluminate concrete which is constructed during low or negative temperature environment, can still have a good performance of working and early strength, so that can shorten the construction period greatly and extened the year construction period of concrete for 2 to 4 months in the northwest alpine and arid areas.