WATER ABSORPTIVE BLOCK

• Main Authors: KAWASE KOICHI, TAKEGAWA TOSHIYUKI
• Format: Patent
• Language: English
• Published: 11.08.1998
• Edition: 6
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; FIXED CONSTRUCTIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; METALLURGY; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF NATURAL STONE

PROBLEM TO BE SOLVED: To obtain a compsn. giving a block excellent in water absorbing property and water permeability and less liable to clog when the compsn. is fired by mixing a carbon material made of residue on combustion of scrap of a rubber product with a ceramic material in a specified weight ratio and incorporating the resultant mixture. SOLUTION: A carbon material made of residue on combustion of scrap of a rubber product and having a hardness of 40-50 and 30-180m /g specific surface area, e.g. residue obtd. by burning a scrap tire at 400-900 deg.C in the presence of CO, CO2 and water is mixed with a ceramic material such as gairome clay in (light grayish green colored kaolin clay) in a weight ratio of 1:9 to 4:6, preferably 2:8 to 3:7. A compsn. contg. the resultant mixture, 0.1-10 pts.wt., preferably 0.5-5 pts.wt. of koga-stone based on 100 pts.wt. of the mixture and water is prepd. and fired at 800-1,200 deg.C to obtain the objective water absorbing block. The koga-stone (biotite-rhyolite) acts as a sintering material.