Brick Clay — Thermal Expansion

Brick and tile products contribute significantly to the development and quality of construction projects all over the world. This figure of a brick clay measurement exhibits a step in the thermal expansion curve (red) at 576°C which can clearly be seen in the physical α-curve as a peak at 587°C. This change in thermal expansion isd ue to the overlapping dehydration of clays and phase transition of quartz. Above 800°C, sintering starts. During the sintering process, a melting effect can be observed which could be due to an inorganic component of the raw material.