Experimental investigation of adhesion failure of the interface between concrete and polymer-cement mortar in an external wall tile structure under a thermal load

This paper aims to present an experimental method for investigating an adhesion failure of the interface between concrete and adhesive mortar in an external wall tile structure under a thermal load. The laboratory-scaled heating experiment was designed in order to represent the external wall tile structure that is subjected to solar radiation. The presented experiment successfully reproduces the interfacial delamination under the thermal load, and quantitatively gives a result in terms of the relationship between the maximum temperature supplied on tile surface and the length of interfacial delamination. Based on this experiment, together with commonly observed tile surface temperatures in the reality, the long-term durability of the interface is discussed.