The flowability of cement raw meal is investigated at temperatures up to 850 degrees C in a specially designed monoaxial shear tester. Consolidation stresses of 0.94, 1.87 and 2.79 kPa are applied. The results show that the flowability is reduced as temperature is increased above 550 degrees C, indicated by increasing unconfined yield strength and reduced flowability factors. Deviation and reproducibility are acceptable for all temperatures except for 850 degrees C where belite formation and possibly calcination sinter the raw meal. (C) 2014 Elsevier B.V. All rights reserved.