2 raw clays samples from Burkina Faso were analyzed in order to improve the ceramic process of roof tiles and small bricks manifacture. The major phases etected by X-ray diffraction in the 2 samples are kaolinite, illite, orthose and quartz. In addition, feeble quantities of albite and montmorillonite are also detected. The thermal behavior between 25° C and 1100° C studied by DTA and DTG is mainly explained by the individual role of clay minerals in studied samples. The sintering of clay ceramics at 1100° C was characterized by dilatometry. In general, dilatometric curves shapes are characterized by successive stages of strain and/or densification in specific temperature ranges. The extend of the observed phenomena is mainly related to the clay mineral fraction in samples. It evidences that clay mineral have a critical role in the sintering of ceramic. A useful …