Title:
石炭灰の評価方法、およびセメント又はコンクリートの製造方法
Document Type and Number:
Japanese Patent JP5705022
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method capable of evaluating a suppression effect of coal ash to be used on an alkali-silica reaction in a quick as well as accurate manner and to provide a manufacturing method of cement and concrete using the method.SOLUTION: A coal ash evaluation method: calculates a specific surface area of a particle of a specific type contained in coal ash to be used through a particle analysis using an electronic microscope; and evaluates a suppression effect of the coal ash to be used on an alkali-silica reaction by comparing data on expansion coefficients obtained through alkali-silica reaction tests using mortar mixed with preliminarily collected coal ash from different production areas. The coal ash evaluation method also calculates a necessary compounding amount of the coal ash to be used for cement and concrete using a product of the specific surface area of the particle of the specific type contained in the coal ash to be used and a cement substitution rate of the coal ash as an index for suppression of the alkali-silica reaction.
Inventors:
Haruka Takahashi
Kazuo Yamada
Kazuo Yamada
Application Number:
JP2011110556A
Publication Date:
April 22, 2015
Filing Date:
May 17, 2011
Export Citation:
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
G01N15/00; C04B18/08; C04B18/10; C04B28/02; G01N23/225; G01N33/22
Domestic Patent References:
| JP2010100480A | ||||
| JP2008230864A | ||||
| JP2006315896A | ||||
| JP2007314393A | ||||
| JP2008043832A | ||||
| JP2009121988A |
Other References:
李昇憲ほか,電気集じん機により段別採取したフライアッシュの特性と脱炭素処理によるフライアッシュの改質,材料,1999年 8月15日,Vol.48,No.8,P.837-842
J. BERETKA, T. BROWN,Properties and pozzolanic behaviour of Australian fly ash,J. Aust. Ceram. Soc.,1976年,Vol.12,No.1,P.13-19
高橋晴香, 鵜澤正美, 山田一夫,画像解析を用いたコンクリートの配合推定に関する検討,セメント技術大会講演要旨,日本,2010年 4月30日,Vol.64th,Page.234-235
J. BERETKA, T. BROWN,Properties and pozzolanic behaviour of Australian fly ash,J. Aust. Ceram. Soc.,1976年,Vol.12,No.1,P.13-19
高橋晴香, 鵜澤正美, 山田一夫,画像解析を用いたコンクリートの配合推定に関する検討,セメント技術大会講演要旨,日本,2010年 4月30日,Vol.64th,Page.234-235
Attorney, Agent or Firm:
Naoyuki Koda