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

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