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. 31, 2012
Filed:
Feb. 13, 2009
Toshiharu Kishi, Tokyo, JP;
Tae-ho Ahn, Tokyo, JP;
Akira Hosoda, Yokohama, JP;
Kaoru Kobayashi, Tokyo, JP;
Toshiharu Kishi, Tokyo, JP;
Tae-Ho Ahn, Tokyo, JP;
Akira Hosoda, Yokohama, JP;
Kaoru Kobayashi, Tokyo, JP;
The University of Tokyo, Tokyo, JP;
National University Corporation Yokohama National University, Kanagawa, JP;
East Japan Railway Company, Tokyo, JP;
Abstract
It is an object of the invention to provide a cement admixture that can form concrete having a sufficient self-healing capability and satisfactorily maintaining its self-healing capability for prolonged periods. The cement admixture of the invention contains an expanding material and an alumina-silicate with swelling properties. The cement admixture is combined with cement to form a cement composition. The cement composition is mixed with water and an aggregate to provide concrete with an excellent self-healing capability.