4. Conclusions
We may conclude that:
Red mud and soda-lime glass cullet are suitable raw materials for geopolymer production.
Compressive strength values comparable to Portland cement, close to 45 MPa, were achieved for samples produced with 6M solution.
MAS-NMR and EDX techniques confirmed the formation of geopolimeric gel with Si/Al and Al/Na molar ratios close to 2 and 1, respectively.
The leaching of heavy metals agreed with values found in literature, despite the relatively high amount of red mud in the formulation.
