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:
May. 29, 1984
Filed:
Sep. 29, 1982
Applicant:
Inventor:
James H Sprouse, El Toro, CA (US);
Assignee:
Standard Concrete Materials, Inc., Santa Ana, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106 89 ; 106 90 ; 106117 ; 106118 ; 106120 ;
Abstract
An improved cement for making concrete and mortar comprises a blend of ground calcium carbonate or Portland cement kiln dust, or both, and ground, granulated blast furnace slag. While its physical and chemical characteristics differ from Portland cement, it is a functional substitute for Portland cement and may be used in combination with Portland cement in a wide range of proportions. The hardening and other characteristics of this slag-dust cement can be improved by the addition of SO.sub.3, ordinarily by adding ground gypsum and by the use of accelerators and high-range water reducing formaldehyde compounds.