| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6724319 | Construction and Building Materials | 2014 | 5 Pages |
Abstract
The effects of nano-Al2O3 addition on the early-age microstructural properties of cement paste is reported in this paper. The study was limited to evaluation of properties of cement paste hydrated up to an age of 7Â days. Ordinary Portland cement was replaced by nano-Al2O3 powder at 2% and 4% by weight. The water-binder ratio was fixed at 0.4. No changes were noticed in the early-age compressive strength with nano-Al2O3 addition. XRD analysis confirmed that no new phase developed due to the addition of nano-Al2O3 powder. However, FTIR analysis shows a shift in water associated band to lower frequency mostly with 4% nano-Al2O3 addition. Scanning electron microscopy reveals the formation of much dense microstructure with larger crystals of portlandite within the cement matrix.
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Authors
Salim Barbhuiya, Shaswata Mukherjee, Hamid Nikraz,