University of Florida Paper on Cycle Assessment of Recycled Glass as Pozzolan

The analysis conducted here found that the glass pozzolan product resulting from cullet size-reduction processing can compete with the traditional glass recycling market as long as there is an annual processing throughput of at least 50,000 t of MRF cullet. Further research should be conducted to predict the future demand for GP pozzolan based on expected decreases in coal fly ash supply, and in turn, increases in retail value.

Source: University of Florida, Economic and life cycle assessment of recycling municipal glass as a pozzolan in portland cement concrete production