Performance analysis of porous ceramic plates obtained with glass residue and lime mud for application on ventilated facades

A porous ceramic plate was developed using glass residue and lime mud and simulated application on a ventilated facade. The glass residue replaced 100% feldspar. Lime mud was used as a porogenic material. An experimental design was carried out with variations of 20% to 40% of lime mud and firing temperature between 860 and 1020 °C. The obtained plates were submitted to tests of flexural strength and total porosity. In the best experimental condition, the plate containing 40% of lime mud fired at 1020 °C had a flexural strength of 7.25 MPa, total porosity of 37.5%, and water absorption of 21.8%. In the thermal insulation performance test of the plates, this sample presented a better thermal performance in relation to the commercial sample evaluated. (author)