Investigation of self-healing in cementitious materials with sulfoaluminate cement microcapsules using X-ray computed tomography
نویسندگان
چکیده
This paper presents work toward the studying of a new family of self-healing cementitious material. This innovative system features the design of microcapsules with calcium sulfoaluminate cement (CSA) as healing agent. The aim of this study is to comprehensively monitor the whole crack-healing process of microcapsules based self-healing system by means of X-ray computed tomography (X-ray CT). In order to study the crack-healing process, the micro cracks were created with the help of preloading test. The crack-healing process at different healing time were nondestructively monitored and analyzed by using X-ray CT and image analysis technique. The inner micro-topography of specimen with microcapsules was successfully reconstructed and analyzed. Experimental results show that the microcapsules based self-healing cementitious material has a remarkable crackhealing effect.
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