Title:
【発明の名称】スラグ路盤材の製造方法
Document Type and Number:
Japanese Patent JP2927150
Kind Code:
B2
Abstract:
PURPOSE:To obtain a base course material based on steelmaking slag. CONSTITUTION:A process for producing a base course material based on steelmaking slag, comprising adjusting the basicity (CaO/SiO2) to 2.0-5.0 by a weight ratio in the manufacture of steel iron, adding fluorite and/or calcium chloride to the mixture, cooling the mixture, spontaneously aging this mixture under an atmospheric pressure, crushing the cooled slag, adjusting the particle size of the crushed particles, and forcibly aging these particles by blowing steam into them under an atmospheric pressure. In this process, the spontaneous aging may be preceded by the crushing and the particle size adjustment. The base course material produced by either of these processes may be mixed with blast furnace slag and/or waste concrete to produce a mixed slag-based base course material. Thus, the base course materials can be produced at good efficiency within a short time from steelmaking slag.
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Inventors:
YUSA KAZUMI
TSUDA MASAHITO
SAKAI KEN
TSUDA MASAHITO
SAKAI KEN
Application Number:
JP21254293A
Publication Date:
July 28, 1999
Filing Date:
August 27, 1993
Export Citation:
Assignee:
SUMITOMO KINZOKU KOGYO KK
International Classes:
C04B5/00; C04B5/06; C04B18/14; C09K17/02; E01C3/00; C09K103/00; (IPC1-7): C04B5/06; C04B5/00; E01C3/00
Domestic Patent References:
| JP6148446A | ||||
| JP4926112A | ||||
| JP4202034A |
Attorney, Agent or Firm:
Terutaka Hogami (1 person outside)