Abstract
The water resistance of magnesium oxychloride cement (MOC) incorporating glass powder (GP) and pulverized fuel ash (PFA) with and without CO 2 curing was investigated in terms of the strength retention coefficient and the volume stability. The microstructure was studied using quantitative X-ray diffraction (QXRD), thermogravimetry (TG), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that the effect of incorporating GP on the water resistance is much lower than that of PFA due to the lower pozzolanic activity of GP generating a lower amount of magnesium silica hydrate gel (M-S-H gel). The MOC incorporated with GP or PFA showed high water resistance after CO 2 curing due to the higher quantity of amorphous gel that formed a much denser interlocking network.
| Original language | English |
|---|---|
| Pages (from-to) | 98-109 |
| Number of pages | 12 |
| Journal | Cement and Concrete Composites |
| Volume | 86 |
| DOIs | |
| Publication status | Published - 1 Feb 2018 |
Keywords
- CO curing
- Gel formation
- Magnesium oxychloride cement (MOC)
- Microstructure
- Water resistance
ASJC Scopus subject areas
- Building and Construction
- General Materials Science
Fingerprint
Dive into the research topics of 'Comparison of glass powder and pulverized fuel ash for improving the water resistance of magnesium oxychloride cement'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver