Title:
Materials for engineering works, and a manufacturing method for the same
Document Type and Number:
Japanese Patent JP6052144
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a material for civil engineering made of steel slag capable of reducing alkali elution and thus effectively regulating a pH increase in the surrounding environment by forming a stable film on the surface of the steel slag.SOLUTION: A chitosan solution is bonded to granular or massive steel slag to form a film of chitosan on the particle surface of the steel slag. A stable chitosan film capable of effectively regulating alkali elution is formed on the steel slag due to an effect of an alkali eluting from the steel slag. Defective parts of the film are filled (covered) with calcium carbonate or the like to form an organic-inorganic composite film having increased stability by carbonation treatment after chitosan solution treatment.
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Inventors:
▲高▼橋 克則
Keiji Watanabe
Michihiro Kuwayama
Keiji Watanabe
Michihiro Kuwayama
Application Number:
JP2013245731A
Publication Date:
December 27, 2016
Filing Date:
November 28, 2013
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C04B5/00; B09B3/00; C21C1/02; C21C5/28; F27D15/00
Domestic Patent References:
| JP2001316141A | ||||
| JP1218672A | ||||
| JP2001026470A |
Other References:
坂井仁他,有機物を用いたリン酸処理による鉄鋼スラグ中重金属不溶化に関する研究,土木学会西部支部研究発表会,2011年 3月
Attorney, Agent or Firm:
Hideto Tomabechi