Title:
CAVITY FILLER
Document Type and Number:
Japanese Patent JP2016102031
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a cavity filler achieving efficient use of coal ash, preventing elution of heavy metals from the coal ash, capable of adjusting gelation time, capable of preventing runaway or outflow of a filler, excellent in processability and having strength similar to that of natural ground and foundation over long time.SOLUTION: There is provided a cavity filler which is a mixture of a slurry A containing 100 pts.mass of calcium aluminate, 20 to 300 pts.mass of gypsums, 0.5 to 15 pts.mass of one or more kind selected from carbonate, bicarbonate and sulfate of alkali metal, 0.5 to 15 pts.mass of sodium aluminate and 0.1 to 5 pts.mass of a setting retarder and a slurry B containing coal ash of 100 to 1000 pts.mass and cement of 100 to 500 pts.mass based on 100 pts.mass of the calcium aluminate in the slurry A.SELECTED DRAWING: None
Inventors:
ISODA HIDENORI
YOSHIDA RYOZO
YOSHIDA RYOZO
Application Number:
JP2014239422A
Publication Date:
June 02, 2016
Filing Date:
November 27, 2014
Export Citation:
Assignee:
TAIHEIYO MATERIAL KK
International Classes:
C04B28/02; C04B18/10; C04B22/08; C04B22/10; C04B22/14; C04B24/06; E21D11/00; E21F15/00
Domestic Patent References:
| JP2012096933A | 2012-05-24 | |||
| JP2007177077A | 2007-07-12 | |||
| JP2004143037A | 2004-05-20 | |||
| JPH11100250A | 1999-04-13 |
Attorney, Agent or Firm:
Alga Patent Office, a patent business corporation
Toshio Takano
Toshio Nakajima
Masaki Murata
Hiroto Yamamoto
Toshio Takano
Toshio Nakajima
Masaki Murata
Hiroto Yamamoto