Zhang, D. and Mao, M. and Yang, Q. and Lim, Kar Sing (2019) Carbonation resistance of concrete with fly ash as fine aggregate. In: Proceedings of 3rd National Conference on Wind & Earthquake Engineering and 1st International Seminar On Sustainable Construction Engineering (NCWE & ISSCE 2019) , 12-13 July 2019 , Kuala Lumpur, Malaysia. pp. 311-318..
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Abstract
In order to investigate the carbonation resistance of concrete with fly ash as fine aggregate (CFA), the rapid carbonation test was conducted to explore the influence of the curing age, water-to-cement (w/c) ratio, fly ash replacement rate and the activator on the carbonation depth. The experimental results show that prolonging the curing time is beneficial to improving the carbonation resistance of the CFA. The carbonation depth of the CFA correlates positively with the w/c ratio. With an increase in the fly ash replacement rate and w/c ratio, the carbonation resistance of the CFA increases to a remarkable extent. After 28 days of standard maintenance of the CFA, the compactness of the CFA is boosted due to the pozzolanic effect of the fly ash, and its carbonation resistance is enhanced compared to that of ordinary concrete. In addition, the incorporation of the activator marginally contributes to the improvement of the carbonation resistance of the CFA.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Uncontrolled Keywords: | Carbonation resistance; CFA increases; Pozzolanic effect |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TD Environmental technology. Sanitary engineering |
| Faculty/Division: | Faculty of Civil Engineering & Earth Resources |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 26 Nov 2019 03:20 |
| Last Modified: | 26 Nov 2019 03:20 |
| URI: | http://umpir.ump.edu.my/id/eprint/26599 |
| Download Statistic: | View Download Statistics |
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