The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 16, 1979
Filed:
Mar. 03, 1977
Dieter Heese, Bochum, DE;
Gerhard Hausberg, Essen-Bresdeney, DE;
Hans Lehmann, Goslar, DE;
Hans-Joachim Schmidt, Goslar-Hahndorf, DE;
Klaus Goldschmidt, Essen, DE;
Kyaw Than, Essen, DE;
STEAG Aktiengesellschaft, Essen, DE;
Abstract
Concrete, especially for producing concrete blocks of high compressive strength, is formed from a hydraulic binder and an improved aggregate which consists of 0.1:1 to 1:0.1 parts of a sludge to comminuted slag. The sludge is a calcium-containing product of the scrubbing of the flue gases of a fossil-fuel boiler, preferably of a power plant, while the slag can be melting-chamber slag or ash obtained from the furnace. The composition may also contain sand or gravel. It is combined with water, to be cast into cement blocks of high compressive strength. Low proportions of the hydraulic binder are required with the improved aggregate.