Morteros a base de vidrio de desecho/escoria de alto horno; activación mecanoquímica del vidrio en soluciones alcalinas.

• Main Authors: J. Ivan Escalante, Lester J. Espinoza Pérez
• Format: Article
• Language: English
• Published: Universidad Nacional de Ingeniería 2011-06-01
• Series: Nexo
• Subjects: waste glass; blast furnace slag; mechanochemical activation.
• Online Access: http://www.lamjol.info/index.php/NEXO/article/view/657/487

<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 SiO₄ 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 Na₂O content and decreased when the curing temperature was increased to 60^oC. In contrast, 100% WG cements required very aggressive chemical activation conditions (12% Na₂O at 60^oC) 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>