Clinker portland is the main component in cement manufacturing. In this work, the feasibility of using it as a raw material for making ceramic matrix composites has been studied. Magnesia has been used as a sintering additive in order to improve plain clinker properties. Composite materials have been manufactured by cold isostatic pressing (CIP) and by sintering in air at 1400°C. The mechanical properties, microstructure, mechanical reliability (through the Weibull modulus) and wear behaviour of clinker-based materials were evaluated.