Peculiarities of hydration of Portland cement with synthetic nano-silica
| Autor: | Kotsay Galyna |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Selected Scientific Papers: Journal of Civil Engineering, Vol 12, Iss 2, Pp 101-106 (2017) |
| Druh dokumentu: | article |
| ISSN: | 1338-7278 2017-0025 |
| DOI: | 10.1515/sspjce-2017-0025 |
| Popis: | Application of nano-materials in cement products significantly, improves their properties. Of course, the effectiveness of the materials depends on their quantity and the way they are introduced into the system. So far, amongst nano-materials used in construction, the most preferred was nano-silica. This research investigated the effect of synthetic precipitated nano-silica on the cement hydration as well as, on the physical and mechanical properties of pastes and mortars. Obtained results showed that admixture of nano-silica enhanced flexural and compressive strength of cement after 2 and 28 days, however, only when admixture made up 0.5% and 1.0%. On the other hand, the use of nano-silica in the amount 2% had some limitations, due to its ability to agglomerate, which resulted in deterioration of the rheological and mechanical properties. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|