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. 16, 1978
Filed:
Oct. 08, 1976
Applicant:
Inventor:
James A Ray, Mantua, OH (US);
Assignee:
Martin Marietta Corporation, Bethesda, MD (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106 90 ; 106 97 ; 106104 ; 106314 ; 106315 ;
Abstract
A hydraulic cement mix including hydraulic cement, aggregate, sufficient water to effect hydraulic setting of the cement, and an additive comprising at least one acetic acid ester of glycerin, wherein the additive is present in an amount sufficient to increase the strength of the mix when hardened. The additive is preferably selected from the group comprising monoacetin, diacetin, triacetin, and mixtures thereof and is present generally in an amount of up to 2.0% by weight based upon the weight of the cement, usually between 0.01% and 2.0% by weight.