Filler for a bituminous mixture
AssigneeReDeLa Herstellung und Vertrieb von Baustoffen GmbH
InventorErhard Goldbach
Life of this patent
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Abstract
A filler for a bituminous mixture, particularly asphalt mastic, includes a mixture of a stone-like natural product, for example, rock dust, and an industrial product in the form of pulverized resin with cellulose fiber substances. Approximately 80 percent of the mixture preferably have a grain size of less than 0.09 mm. The pulverized resin with cellulose fiber materials is produced particularly as a dust-like abrasion product during the grinding, cutting or drilling processing of clutch linings or brake linings.
Claims1
A filler for a bituminous mixture, the filler comprising a mixture of stone dust and a pulverized industrial by-product, wherein a ratio of stone dust to industrial by-product is 2:1, wherein the industrial by-product comprises 5% to 20% by weight pulverized phenol/cresol resin and 2% to 20% by weight elastic, hook-shaped fiber materials of cellulose or aramid, and a material obtained from grinding or cutting hardened clutch linings and/or brake linings comprising mineral wool, rubber, brass/copper, talcum, graphite, soot, magnesium oxide, vulcanizing agents, sulphur, zinc oxide and barium sulphate, and wherein approximately 80% of the filler has a grain size of less than 0.09 mm.
Dependencies are inferred from the claim text.