Resumen de Influence of Ground PV Glass Addition on Selected Properties of Geopolymer Mortars

Barbara Słomka-Słupik, Paulina Wiśniewska, Wiktor Bargieł

• The Alkaline Activated Binders are a hope and a necessity to reduce the carbon footprint of the building materials industry. Many waste and recycled materials can be reused. In our work, we used activators and geopolymerization precursors: slag, waste concrete, metakaolin and glass from photovoltaic panels. We added a little glass, 1.1%, but even this amount has an impact on the microstructure of the mortar. The porosity decreased and the strength increased with the addition of the pulverized glass from the photovoltaic panels. A low Si/Al ratio, around 1, of the mortars cured in room conditions allowed to achieve compressive strength, around 12–14 MPa, open porosity was around 20%. The compressive strength of the geopolymer paste is slightly lower than that of geopolymer mortars. Permeability of mortars without glass increased almost 3 times. Phases changes after 2 and 4 months focused on strong carbonation reactions, what entitles to draw the conclusion of double decarbonizing properties of geopolymers.