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. 24, 1983
Filed:
Dec. 30, 1981
Applicant:
Inventors:
Pierre C Aitcin, Sherbrooke, CA;
Philippe Pinsonneault, Sherbrooke, CA;
Roland Fortin, Sherbrooke, CA;
Assignee:
Universite' de Sherbrooke, Quebec, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09C / ;
U.S. Cl.
CPC ...
1062 / ; 106 98 ;
Abstract
There is provided a process for agglomerating volatilized silica in the form of grains by wetting same with from about 10 to about 35% by weight of an alkali or alkaline earth metal oxide solution in water, said agglomerated volatilized silica having a densification factor of 1.7 to 2.5 (when oven-dried) and a dry bulk density of from about 500 to 775 kg/m.sup.3. These agglomerated volatilized silica grains can be used to replace advantageously up to 50%, and in some cases more, by weight of Portland cement in the manufacture of concrete.