Materiales cerámicos ligeros

espanolSe revisan los metodos generales empleados para conseguir materiales ceramicos de bajo peso especifico aparente. Se pueden lograr estos materiales por: a) Eliminacion de sustancias combustibles durante el proceso de coccion; b) Eleccion de una adecuada textura del material crudo; e) Produccion y escape impedido de gases durante la coccion, y d) Utilizacion de materias primas porosas. Se describe despues la formacion de piezas ceramicas ligeras y de aridos ligeros susceptibles de ser empleados como aislantes granulados y como componentes no plasticos en masas ceramicas. EnglishA review is made of the general methods used in the production of lightweight ceramic materials. A low apparent specific weight can be achieved by. a) Burning of the carbonaceous matter added to the ceramic mixture; b) Proper use of the particle-packing concepts in the preparation of the mixture; c) Evolution of gases at high temperature which yields a vesiculate structure in the pyroplastic state, and; d) Using porous particles in making the mixture. The production of lightweight ceramic forms and lightweight granules are also described. The latter can be used as particulate insulating materials and also as non-plastic components in ceramic bodies.