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CREEP, SHRINKAGE AND DURABILITY MECHANICS OF CONCRETE AND CONCRETE STRUCTURES contains the keynote lectures, technical reports and contributed papers presented at the Eighth International Conference on Creep, Shrinkage and Durability of Concrete and Concrete Structures (CONCREEP8, Ise-shima, Japan, 30 September - 2 October 2008). The topics covered
In this paper, we investigate the development of stress and the debonding behavior of thin bonded concrete overlays under restrained conditions. The results show us that the fractured mode of a concrete repair system will change clearly along the new concrete with higher shrinkage deformation to crack along the interfacial layer, and with increasing intensity strength, the interfacial layer becomes stronger so that it is hard for the concrete repair system to fail. It is difficult to predict the exact crack pathway of a concrete repair system unless the condition of the meso-structure is known.