Title: Self-Healing Properties of Thermally Damaged Cement Blends
Author(s): Xing Ming, Mingli Cao, Li Li, and Hong Yin
Publication: Materials Journal
Appears on pages(s): 161-172
Keywords: calcium carbonate whisker; fly ash; high temperature; microstructure; self-healing
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 physiochemical 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 demonstrates high temperature resistance and self-healing performance. Due to pozzolanic effect of FA, formation of ceramic phases, rehydration process, and carbonation, the deterioration in residual strengths and microstructure after high temperature exposure can be partially recovered during the self-healing process.