Details

Autor(en) / Beteiligte

• Novais, Rui M.
• Ascensão, G.
• Seabra, M.P.
• Labrincha, J.A.

Titel

Waste glass from end-of-life fluorescent lamps as raw material in geopolymers

Ist Teil von

• Waste management (Elmsford), 2016-06, Vol.52, p.245-255

Ort / Verlag

United States: Elsevier Ltd

Erscheinungsjahr

2016

Quelle

MEDLINE

Beschreibungen/Notizen

• [Display omitted] •Reuse of waste glass coming from end-of-life fluorescent lamps was investigated.•This unexplored waste glass was successfully incorporated into geopolymers.•Lightweight waste glass-containing geopolymers (820kg/m3) were produced.•This innovative material presents interesting potential as construction material.•The environmental problems associated with waste glass are mitigated. Nowadays the stunning volume of generated wastes, the exhaustion of raw materials, and the disturbing greenhouse gases emission levels show that a paradigm shift is mandatory. In this context, the possibility of using wastes instead of virgin raw materials can mitigate the environmental problems related to wastes, while reducing the consumption of the Earth’s natural resources. This innovative work reports the incorporation of unexplored waste glass coming from end-of-life fluorescent lamps into geopolymers. The influence of the waste glass incorporation level, NaOH molarity and curing conditions on the microstructure, physical and mechanical properties of the geopolymers was evaluated. Results demonstrate that curing conditions are the most influential factor on the geopolymer characteristics, while the NaOH molarity is less important. Geopolymers containing 37.5% (wt) waste glass were successfully produced, showing compressive strength of 14MPa (after 28days of curing), suggesting the possibility of their use in non-structural applications. Porous waste-based geopolymers for novel applications were also fabricated.