MyJournals Home  

RSS FeedsSustainability, Vol. 11, Pages 995: Mine Tailings Geopolymers as a Waste Management Solution for A More Sustainable Habitat (Sustainability)


15 february 2019 14:00:02

Sustainability, Vol. 11, Pages 995: Mine Tailings Geopolymers as a Waste Management Solution for A More Sustainable Habitat (Sustainability)

The demand for low environmental impact of materials in our habitat is one of the current societal challenges. Along with other solutions of waste valorisation, alkali activation as geopolymers can be one possible solution of waste valorisation because they may allow, for instance, an alternative solution for cement-based materials in some applications and it is one contribution for circular economy. This work has focused on the development and processing of geopolymers that incorporates as a fine aggregate a high-sulfidic mining waste (mine tailing), a difficult waste to process. Rheology analysis was applied as an important step to understand not only the geopolymers behaviour but also its transition from the fresh to the hardened state. The effect of precursor binder type (metakaolin or blast furnace slag), of mine tailing content and also the effect of temperature and curing conditions of different formulations were studied in this solution. It was possible to conclude that although this particular mine tailing is not a geopolymer binder precursor, it may be incorporated as an alternative fine aggregate in construction products. Furthermore, rheology could be used to follow up the geopolymer alkali-activation process and even to setup proper curing conditions and components contents in order to optimize the final mechanical strength of this material as a waste management solution. The final properties of these geopolymers compositions were adequate and after 28 days of curing, these geopolymers exhibit significant chemical resistance under severe test conditions. Digg Facebook Google StumbleUpon Twitter
39 viewsCategory: Ecology
Sustainability, Vol. 11, Pages 996: Reflecting Disaster Risk in Development Indicators (Sustainability)
Sustainability, Vol. 11, Pages 994: Variations of Groundwater Quality in the Multi-Layered Aquifer System near the Luanhe River, China (Sustainability)
blog comments powered by Disqus
The latest issues of all your favorite science journals on one page


Register | Retrieve



Use these buttons to bookmark us: Digg Facebook Google StumbleUpon Twitter

Valid HTML 4.01 Transitional
Copyright © 2008 - 2019 Indigonet Services B.V.. Contact: Tim Hulsen. Read here our privacy notice.
Other websites of Indigonet Services B.V.: Nieuws Vacatures News Tweets Travel Photos Nachrichten Indigonet Finances Leer Mandarijn