| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6723134 | Construction and Building Materials | 2014 | 7 Pages |
Abstract
The microstructure of cement-slag and cement-fly ash pastes leached by fresh water for 2-3 years was investigated by MIP, XRD, TG and SEM. Results indicated that long-term fresh water leaching caused degradation of the pastes in terms of mass loss, increase in porosity and decrease in Ca(OH)2 content and Ca/Si ratio of C-S-H gel, but showed no decomposition of hydration products. The pastes containing a small amount of fly ash were not damaged severely, incorporation of 65% of fly ash deteriorated most severely, whereas the cement-slag pastes (⩽70%) showed high long-term fresh water leaching resistance.
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Authors
Fanghui Han, Rengguang Liu, Peiyu Yan,