Effect of mineral admixtures on sulfate resistance of mortars under electrical field
| Autor: | Chong Wang, Changhui Yang, Chaoqun Luo, Huan Xie, Qian Huang, Yaoling Luo |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Ettringite
Materials science Gypsum Silica fume Metallurgy technology industry and agriculture 0211 other engineering and technologies Mineralogy 02 engineering and technology Building and Construction engineering.material 021001 nanoscience & nanotechnology chemistry.chemical_compound Compressive strength chemistry Flexural strength Fly ash 021105 building & construction engineering General Materials Science Sulfate Mortar 0210 nano-technology |
| Zdroj: | Advances in Cement Research. 29:45-53 |
| ISSN: | 1751-7605 0951-7197 |
| DOI: | 10.1680/jadcr.16.00063 |
| Popis: | This paper presents a study on sulfate resistance of mortars blended with and without silica fume or fly ash under electrical field. Performance of the mortars was determined by various means such as visual examination, sulfate concentration, flexural and compressive strength, as well as mineralogical analysis. The results showed that electrical field accelerated the deterioration induced by sulfate attack, as it sped up the ingress of sulfate ions into the mortar. The use of mineral admixtures improved the sulfate resistance of mortars. However, a relatively great amount of migrated sulfate as well as expansive sulfate products (gypsum and ettringite) were still found in the blended cement mortars under the electrical field, for which their deterioration was also notable. Therefore, the electrical field also accelerated sulfate attack on the mortars blended with mineral admixtures. |
| Databáze: | OpenAIRE |
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