Process for the manufacture of a material with cellular structure of high permeability, material obtained

摘要

Process for the manufacture of a cellular material of high permeability from granulates with high internal cohesion and from a binder based on polymerisable synthetic resin. This process consists in selecting the granulate so that it has a low particle size heterogeneity, in removing the fines, sand and particles from the granulate and in mixing a quantity Q of synthetic resin, calculated as a function of the mean diameter D of the granulate: <IMAGE> The process makes it possible to obtain a material combining a very high permeability (higher than 200 cc/cm<2> min) and excellent mechanical strength properties (crushing strength higher than 100 bars).