Alkali activated slag cements using waste glass as alternative activators. Rheological behaviour
| Autor: | M.M. Alonso, M. Torres-Carrasco, Carlos Rodríguez-Puertas, Francisca Puertas |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
High energy
Materials science Alternative activators Environmental pollution Esfuerzo umbral Industrial and Manufacturing Engineering law.invention lcsh:TP785-869 Rheology Reología law Materiales activados alcalinamente Alkali-activated materials Composite material Yield stress Durability Alkali activated slag Portland cement Residuos vítreos Activadores alternativos lcsh:Clay industries. Ceramics. Glass Ground granulated blast-furnace slag Mechanics of Materials Alkali activated Ceramics and Composites Waste glass |
| Zdroj: | Boletín de la Sociedad Española de Cerámica y Vidrio, Vol 54, Iss 2, Pp 45-57 (2015) |
| ISSN: | 0366-3175 |
| Popis: | The purpose of this study is to investigate news activators in the preparation of alkali-activated materials (AAMs) alternative to Portland cements by reusing waste glass. Alkali-activated blast furnace slag (AAS) constitutes an alternative to Portland cement due to high energy and environmental pollution associated with industrial Portland cement. Moreover, alkali activated materials offer a series of higher properties than ordinary Portland cement (OPC), such as better strength and durability behaviour. However, the rheology of these materials has been much less intensely researched. The present study aimed to study the effect of waste glass as activator and as replacement of blast furnace slag on the rheological behaviour of AAS pastes, with a comparison between the rheological parameters and fluidity of these pastes to the same parameters in standard cements (CEM I and CEM III/B). The findings show that AAS paste behaviour of rheology when the activator was a commercial waterglass solution or NaOH/Na2CO3 with waste glass was similar, fit the Herschel-Bulkley model. The formation of primary C-S-H gel in both cases were confirmed. However, the rheological behaviour in standard cements fit the Bingham model. The use of the waste glass may be feasible from a rheological point of view in pastes can be used. © 2015 Sociedad Espanola de Ceramica y Vidrio. Published by Elsevier Espana, S.L.U. This is an open access article under the CC BY-NC-ND license |
| Databáze: | OpenAIRE |
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