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We used micro-XCT(X-ray computed tomography) to in-situ investigate the microstructure evolution of hardened binder paste containing different contents(0%,30%,50% and 70%) of blast-furnace slag at different carbonation time(0,3,7 and 14 days),respectively.The carbonation front shape,the degrees of carbonation and cracks spatial distribution were studied for hardened binder paste containing BFS.In addition,the porosity and pore volume distribution of macro-pore were measured at different carbonation ages.The results reveal that the degree of carbonation at different times can be measured by the volume fraction of the uncarbonated and carbonated parts.
We used micro-XCT (X-ray computed tomography) to in situ situ the microstructure evolution of hardened binder paste containing different contents (0%, 30%, 50% and 70%) of blast- furnace slag at different carbonation time 0, 3, 7 and 14 days), respectively. The carbonation front shape, the degree of carbonation and cracks spatial distribution were studied for hardened binder paste containing BFS. Addition, the porosity and pore volume distribution of macro-pore were measured at different carbonation ages.The results reveal that the degree of carbonation at different times can be measured by the volume fraction of the uncarbonated and carbonated parts.