The co-effect of silane coupling agent, shrinkage reducing admixtureand fly ash on new-to-old concrete interfacial layer were primarily studied through a contradistinctive experimental study in this paper.

• 摘要通过对比试验研究，初步探讨偶联剂、减缩剂和粉煤灰共同作用对新老混凝土界面层劈拉强度的影响。