Chloride diffusion resistance and chloride binding capacity of fly ash-based geopolymer concrete
- Publication Type:
- Journal Article
- Cement and Concrete Composites, 2019
- Issue Date:
|Chloride diffusion resistance and chloride binding capacity of fly ash-based geopolymer concrete.pdf||Published Version||18.86 MB|
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© 2019 This study evaluated the chloride diffusion resistance of low-calcium fly ash-based geopolymer concrete through electrical and bulk diffusion techniques. The geopolymer concretes were prepared using 12 different heat curing conditions; three temperatures of 60, 75 and 90 °C and four curing durations of 8, 12, 18 and 24 h, as well as ambient curing. The mechanical and transport properties and microstructural characteristics of the geopolymer concretes were examined. NT BUILD 492 chloride migration and ASTM C1556 bulk diffusion tests were carried out. Results showed that the chloride diffusion resistance and the chloride binding capacity of fly ash-based geopolymer concrete is very low. The fly ash-based geopolymer concrete appears to be suitable for applications where there are little or no chloride-related durability concerns.
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