| Title |
A Study for Creep Effect of the Interfacial Adhesive Layer on the Behavior of Concrete with CFRP |
| Keywords |
interface;viscoelastic model;creep behavior;CFRP strengthening;maxwell model;접합 경계면;점탄성모델;크리프 거동;탄소섬유 보강;유변모델 |
| Abstract |
External bonding of carbon fiber reinforced polymer (CFRP) sheets has been widely accepted as a popular method for strengthening of deteriorated RC structures. The long-term behavior of CFRP-strengthened RC structure is often affected by that of the interface between CFRP sheets and concrete. This study aims at applying a viscoelastic model to describe the creep behaviour of the adhesive layer bonding CFRP sheet to concrete, the CFRP-concrete interface. Reviews of available models on concrete creep behavior have been first carried out and then new FE analysis model is proposed. The proposed FE analysis model based on the maxwell model has been verified by previous experimental results. It is shown that the creep effect of interfacial adhesive layer is very important on the long-term behavior of concrete structures strengthened with CFRP. |