New experimental approach of the reuse of dredged sediments in a cement matrix by physical and heat treatment

摘要

In this study, a sediment was used as a secondary raw material in cement substitution with prior treatment. The treatment adopted is a physical treatment involving grinding and separation to obtain different fractions, using a dry method (1 mm, 250 mu m, 120 mu m) and washing method (250 gm and 120 gm). They were subsequently heat treated at temperatures of 650 degrees C, 750 degrees C and 850 degrees C for 1 h and 3 h, in order to enable chemical activation by decarbonation or by pozzolanic activation of the material.