A discussion of the paper “Effect of carbonation on cement paste microstructure characterized by micro-computed tomography”

•Evolution of linear attenuation coefficient (LAC) regarding carbonation may vary via different CT.•X-ray energy level used for CT scan can reverse the LAC relationship between calcium carbonate and calcium hydroxide.•Hygral equilibrium and polymorphs of carbonation product can also affect the LAC o...

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Published in:Construction & building materials 2021-10, Vol.303, p.124530, Article 124530
Main Authors: Cui, Dong, Wang, Qiannan, Wan, Yi
Format: Article
Language:English
Subjects:
Carbonation
Computed tomography (CT)
Linear attenuation coefficient (LAC)
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description •Evolution of linear attenuation coefficient (LAC) regarding carbonation may vary via different CT.•X-ray energy level used for CT scan can reverse the LAC relationship between calcium carbonate and calcium hydroxide.•Hygral equilibrium and polymorphs of carbonation product can also affect the LAC of carbonated areas. A discussion on a recently published article authored by Kim et al. [Effect of carbonation on cement paste microstructure characterized by micro-computed tomography. Constr. Build. Mater. 263 (2020) 120079] is presented.
doi_str_mv 10.1016/j.conbuildmat.2021.124530
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subjects Carbonation
Computed tomography (CT)
Linear attenuation coefficient (LAC)
title A discussion of the paper “Effect of carbonation on cement paste microstructure characterized by micro-computed tomography”
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