Abstract
The aim of this study is to valorise clays from the Fez region in Morocco as aluminosilicate precursors for geopolymer synthesis. In addition to the clays, the use of calcite and dolomite as mineral additives was also investigated. At first, the Moroccan clays were thermally activated by calcining at 700 °C, and then, a potassium alkaline silicate solution was used for alkali activation. Samples were synthetized by combining clay, metakaolin and mineral additive in several ratios. Consolidated materials were successfully obtained, and geopolymerization reaction was monitored by in situ Fourier transform infrared spectroscopy (FTIR), which revealed several networks. The results demonstrated that composite geopolymers with a mechanical resistance range from 8 to 50 MPa could be obtained from Moroccan clays.
Address
Links
Information