Cementitious burst bubble material mfr. - using expanded polystyrene as void maker in cementitious material, setting, then melting or burning out the polystyrene

摘要

Method of bursting bubbles in cements and other materials esp. refractories, to which more or less voluminous pieces of expanded polystyrene are added followed by homogenisation, is described in which the material is dried naturally or in an oven, and then heated in a furnace to a temp. at which the polystyrene melts or burns leaving excavations in the material. The material can be used to make candle-holders, pendulums, flower pots, rocks, etc. for decoration, or for thermal insulation panel mfr.