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:
Jun. 02, 2009
Filed:
Sep. 17, 2004
Eric Lecolier, Chaville, FR;
Alain Rivereau, Rueil Malmaison, FR;
Annie Audibert, Croissy sur Seine, FR;
Eric Lecolier, Chaville, FR;
Alain Rivereau, Rueil Malmaison, FR;
Annie Audibert, Croissy sur Seine, FR;
Institut Francais du Petrole, Rueil Malmaison Cedex, FR;
Abstract
The invention relates to a high-performance cement comprising an alumnic cement with an aluminium content of at least more than 30%; microsilica with a grain size of 0.1 - 20 μm whereby the percentage thereof is 35 % less by weight in comparison with the weight of the cement; mineral particles with a grain size of 0.5 - 500 μm whereby the percentage thereof is 35% less by weight in comparison with the weight of the cement, the percentage of said particles being less than that of the microsilica; a water-soluble polymer fluidifying agent whereby the percentage thereof is 0.2 to 3.0% in comparison with the weight of the cement; a retarding agent which is used to control the setting time of the slurry; an amount of water the maximum thereof corresponding to 40 % in relation to the cement.