Title:
CEMENT COMPOSITION, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING FLY ASH FOR CEMENT COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2018/198391
Kind Code:
A1
Abstract:
Provided are: a cement composition that retains properties as a mixing material such as improving fluidity and contributing to a strength development, said cement composition being capable of using all of the raw material fly ash obtained from a coal-fired power plant, etc., without having to classify out the coarse powder, and also being capable of contributing to long-term strength development; a method for producing said cement composition; and a method for producing fly ash for a cement composition. The cement composition is characterized by including cement and fly ash, the fly ash content being 30 mass% or less, and the fly ash having a volumetric particle size distribution that satisfies formula (I). 0.24 < (D50 - D10)/(D90 - D50) ≤ 0.5 (I) (In the formula, D10, D50, and D90 respectively represent particle diameters that are equivalent to cumulative frequencies of 10%, 50%, and 90% from the small diameter side of the fly ash)
Inventors:
KANAI KENSUKE (JP)
MATSUDA HIDEAKI (JP)
MATSUDA HIDEAKI (JP)
Application Number:
PCT/JP2017/033784
Publication Date:
November 01, 2018
Filing Date:
September 19, 2017
Export Citation:
Assignee:
SUMITOMO OSAKA CEMENT CO LTD (JP)
International Classes:
C04B7/26; B09B3/00; C04B18/08
Domestic Patent References:
| WO2014077251A1 | 2014-05-22 |
Foreign References:
| JP2011529428A | 2011-12-08 | |||
| JP2012505150A | 2012-03-01 | |||
| JP2015194475A | 2015-11-05 | |||
| JPS5792560A | 1982-06-09 | |||
| JP2016125845A | 2016-07-11 |
Other References:
VELANDIA D. F. ET AL.: "Evaluation of activated high volume fly ash systems using Na2S04 , lime and quicklime in mortars with high loss on ignition fly ashes", CONSTRUCTION AND BUILDING MATERIALS, vol. 128, 2016, pages 248 - 255, XP029805558
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Download PDF: