Self-healing properties of thermally damaged cement blends

In this paper, a novel kind of cement blend with high temperature resistance and self-healing abilities is tailored by incorporating fly ash (FA) and calcium carbonated whisker (CW). The physiochem ical changes after high temperature exposure and water re-curing were examined in this blended cement. Incorporation of FA and CW would be able to lower carbon dioxide footprint of cement manufacture and the resulting cementitious composite demon strates high temperature resistance and self-healing performance. Due to pozzolanic effect of FA, formation of ceramic phases, rehy dration process, and carbonation, the deterioration in residual strengths and microstructure after high temperature exposure can be partially recovered during the self-healing process.