Title:
フライアッシュ混合材料
Document Type and Number:
Japanese Patent JP7157685
Kind Code:
B2
Abstract:
To provide a fly ash mixed material capable of suppressing the leaching of heavy metals over a long period of time even when fly ash, from which heavy metals easily leach out, is used as a raw material.SOLUTION: A fly ash mixed material of the invention contains the following granular hardened material A and inorganic particles B, wherein the grain group of more than 2 mm and 5 mm or less is 5% by mass or more and 20% by mass or less, and the grain group of 2 mm or less is 10% by mass or more and 30% by mass or less. (1) Granular hardened product A: A hardened product using fly ash, cement, lime, gypsum and a reducing agent as raw materials and having a minimum particle size of more than 2 mm and 10 mm or less. (2) Inorganic fine particles B: Inorganic fine particles having a hexavalent chromium content of 2.5 mg/kg or less, a pH of 9 or more, and a maximum particle size of more than 1 mm and 10 mm or less.SELECTED DRAWING: Figure 1
Inventors:
Akihiro Koga
Maruya Eiji
Tomoaki Washio
Hideki Nakata
Maruya Eiji
Tomoaki Washio
Hideki Nakata
Application Number:
JP2019047364A
Publication Date:
October 20, 2022
Filing Date:
March 14, 2019
Export Citation:
Assignee:
UBE Mitsubishi Cement Co., Ltd.
International Classes:
C04B18/08; C04B18/10; C04B22/06; C04B22/14; C04B28/08
Domestic Patent References:
| JP2007119341A | ||||
| JP2018158876A | ||||
| JP2014047121A | ||||
| JP2004148288A | ||||
| JP2008143740A |
Attorney, Agent or Firm:
Patent Attorney Showa International Patent Office
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