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:
Aug. 28, 2012
Filed:
Jan. 26, 2009
Yasuhide Higo, Sakura, JP;
Minoru Yoshimoto, Sakura, JP;
Takeshi Hamada, Tokyo, JP;
Eichi Manabe, Sakura, JP;
Yasuhide Higo, Sakura, JP;
Minoru Yoshimoto, Sakura, JP;
Takeshi Hamada, Tokyo, JP;
Eichi Manabe, Sakura, JP;
Taiheiyo Cement Corporation, Tokyo, JP;
Abstract
It is aimed at providing a heavy concrete, which does not require addition of a thickener such as methyl cellulose, which is less in segregation between a heavy aggregate and a cement paste, and which is high in flowability and excellent in construction ability. The present invention provides a heavy concrete comprising, at least, a cement, a heavy aggregate, and water, mixed with one another, characterized in that the heavy fine aggregate includes hot scarves brought about in a scarfing process of a steel slab surface. The present invention further provides the above-described heavy concrete characterized in that the heavy fine aggregate includes fine aggregate particles passing through a sieve having a nominal size of 0.15 mm, in an amount of 10% to 20% in mass percentage, and the heavy fine aggregate includes spherical particles each having a distortion irregularity of 3.3 or less as defined below, in an amount of 20% or more in the whole of particles having diameters between 50 μm inclusive and 5 mm inclusive in the heavy fine aggregate:[Distortion irregularity]=[Length of circumferential outline of particle]/[Diameter of true circle having the same area as the area of the particle providing the outline].