Abstract: An experimental study on mixed proportions of rapid hardening sulphoaluminate cement and normal Portland cement was made by the way of orthotropie design．The best mixed proportion on faulting of slab ends of cement concrete pavement is set forth．The relevant research shows that this combination of organic and inorganic material cement concrete Can signifieanfly counteract the deficiency of ordinary concrete and owns excellent mechanical properties and pavement performance，including the high initial strength，being able to open to traffic after conserving for 12 hours，small shrinkage，good durability and a hish strength glued with old rode surface．The result of simulate-experiment is also good at the hisht of O．6 cm，without crack and falling．

Key words: orthotropie design, faulting of slab ends, rapid hardening sulphoaluminate cement, initial strength, shrinkage, styrene butadiene po lymer colide

摘要： 采用正交设计的方法对快硬硫铝酸盐水泥和聚合物丁苯乳液进行配合比试验，确定出最佳水泥砼配合比，通 过路用性能对比试验和耐久性对比试验表明，这种有机、无机多相复合的新型道路水泥砼能有效的弥补普通砼的缺 点，具有优良的力学和路用性能：早期强度高，养护12 h即可开放交通，干缩小，耐久性能好，与旧路面之间层间黏结 强度高，并且在错台高度仅为0．6 cm时，模拟错台修补效果很好，没有出现脱落和开裂．

关键词: 正交设计, 错台, 羧基丁苯胶乳, 早强, 收缩率, 快硬硫铝酸盐水泥