Yu, Zhe and Meng, Yazi and Mo, Kim Hung and Liu, Hongbin and Ling, Tung-Chai (2023) Influences of w/c and CO2 curing duration on the high temperature properties of cement pastes. Journal of Building Engineering, 69. ISSN 2352-7102, DOI https://doi.org/10.1016/j.jobe.2023.106293.
Full text not available from this repository.Abstract
CO2-cured cement paste containing rich carbonate products is expected to have a better performance at elevated temperatures. In this study, cement pastes with varying water-to-cement ratio (w/c) were cured with CO2 for various duration, aiming to induce different carbonation degrees and hence elucidate the underlying mechanism upon exposure to high temperatures (200 & DEG;C, 400 & DEG;C, 600 & DEG;C, and 800 & DEG;C). The results showed that CO2-cured cement paste exhibited better performance in terms of water absorption and compressive strength after exposure to temperatures up to 600 & DEG;C. The composition and microstructure results demonstrated that high w/c which induced larger pore structure not only increased the carbonation degree of cement paste but also increased the proportion of well-crystallized calcites. However, when the temperature was raised to 800 & DEG;C, CO2-cured cement paste had a relatively lower residual strength than water-cured cement paste due to the decomposition of CaCO3, regardless of w/c and CO2 curing duration.
| Item Type: | Article |
|---|---|
| Funders: | National Natural Science Foundation of China (NSFC) (52078202) |
| Uncontrolled Keywords: | Cement paste; CO 2 curing; High temperature; Carbonation degree; Water to cement ratio; Calcium carbonate |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering > Department of Civil Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 03 Nov 2025 08:22 |
| Last Modified: | 03 Nov 2025 08:22 |
| URI: | http://eprints.um.edu.my/id/eprint/49862 |
Actions (login required)
 |
View Item |
