Evaluation of a Microcapsule Based Self-healing System for Cementitious Materials

An international cooperation research project has been financially supported by China Nature Science Foundation, which consists of three relatively independent, but strategically integrated research sub-programs, aiming at the formation of a selfhealing system based on the microcapsule principle for the cementitious composites. In this paper, a self-healing system triggered by physical process (cracking) is introduced. The healing material mainly consists of epoxy like materials. The discussion concerning microcapsule techniques are presented in another paper in this conference. This study mainly focuses on the two healing mechanisms: i.e. the mechanical recovery and the permeability related recovery. The primary test results concerning these healing mechanisms are presented and the healing effects on the relevant properties are further discussed.