Porous Construction Ceramics Fabricated by Gelcasting of Waste Resources - Control of Pore Structure by Surfactants -

抄録

Gelcasting using foamed slurry of wastes was applied to fabrication of highly porous construction ceramics that have porosity greater than 65%. In this research, effect of surfactants and their amounts on the porosity and pore size of the obtained ceramics were investigated. The volume ratio of air to slurry increased with increasing the stability of bubble after foaming. The stability was dependent on the type of surfactant. Subsequently, the porosity of sintered ceramics increased as increased the air ratio in the slurry. Not only but pore structure was influenced by the type of surfactant. Behaviors of sound absorption and heat insulation had a strong correlation with the pore structure.