The obtained strength values make it possible to use this material in construction since the widely used ceramic brick of the M150 brand has a compressive strength of 15 MPa. Compared to other alternative materials the strength of the geopolymer filled with perlite was only 2.3 MPa, and that filled with vermiculite was 3.75 MPa. That is, the obtained strength values are higher than the average values obtained by other authors [3,5,7]. Mechanical properties correlate with the porosity of the material and its density.
