A Process of Manufacturing Artificial Stone suitable for Pavements, Building Above and Below Ground and for Hydraulic purposes.

摘要

25,393. Niessen, J. J. Nov. 21. Stone, artificial.-Aluminium hydrates such as bauxite and corundum are sintered or melted, reduced to small pieces, and mixed with binding- material, such as clay, cement, asphalt, &c. The materials are then made into suitable forms and, after burning, are used for pavements, buildings above and below ground, and for hydraulic purposes.