| abstract |
THIS CONSTRUCTION MATERIAL BASED ON HYDRAULIC BINDER, SUCH AS CEMENT OR PLASTER, CONTAINS AS AN ADDITIVE AN EXPANDED THERMOPLASTIC MATERIAL, ESPECIALLY EXPANDED POLYSTYRENE. THE MATERIAL MAY ALSO CONTAIN WOOD SAW. THESE CONSTITUENTS CREATE IN THE MATERIAL BUBBLES OR AIR BLADES WHICH IMPROVE THE THERMAL INSULATION OF THE FINISHED MATERIAL. IF THE BINDER IS CEMENT, THE MATERIAL CONTAINS THE USUAL AGGREGATES (SAND, GRAVEL). THE PROPORTION OF ADDITIVE IS DETERMINED ACCORDING TO THE CHARACTERISTICS DESIRED FOR THE FINISHED MATERIAL, IN PARTICULAR THE CHARACTERISTICS OF BEARING. THE INVENTION STILL CONCERNS A PROCESS FOR THE MANUFACTURE OF THE MATERIAL. |