Morteros a base de vidrio de desecho/escoria de alto horno; activación mecanoquímica del vidrio en soluciones alcalinas.
<p>Composite cements of Blast Furnace Slag (EAH) and Waste Glass (WG) were investigated. A fraction WG was subjected to mechanochemical activation aiming to solubilize its SiO<sub>4</sub> to obtain solutions of sodium silicate (SS) with silica modulus greater than zero to improve t...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universidad Nacional de Ingeniería
2011-06-01
|
| Series: | Nexo |
| Subjects: | |
| Online Access: | http://www.lamjol.info/index.php/NEXO/article/view/657/487 |
| Summary: | <p>Composite cements of Blast Furnace Slag (EAH) and Waste Glass (WG) were investigated. A fraction WG was subjected to mechanochemical activation aiming to solubilize its SiO<sub>4</sub> to obtain solutions of sodium silicate (SS) with silica modulus greater than zero to improve the compressive strength of the cements. With the solutions obtained by AMQ, composites of 0 to 100% WG were prepared, and as referred to cements 100% BFS with standard alkaline activation. The strength of the latter decreased after increasing the Na<sub>2</sub>O content and decreased when the curing temperature was increased to 60<sup>o</sup>C. In contrast, 100% WG cements required very aggressive chemical activation conditions (12% Na<sub>2</sub>O at 60<sup>o</sup>C) to obtain good mechanical properties. The composites with 25 and 50% WG required activation conditions similar to those 100% EAH cements, while those cements with 75% WG required activation conditions similar to those of 100% WG.</p> <p> </p> <p>Keywords: waste glass, blast furnace slag, mechanochemical activation.</p><p> </p> |
|---|---|
| ISSN: | 1818-6742 1995-9516 |