Title:
METHOD FOR PRODUCING HARDENED SLAG PRODUCT
Document Type and Number:
WIPO Patent Application WO/2001/072653
Kind Code:
A1
Abstract:
A method for producing a hardened slag product, which comprises providing a mixture containing 15 to 55 mass % of a slag from a step of pretreatment of hotmetal having a particle diameter of 1.18 mm or less and 5 to 40 mass % of a blast furnace slag having a particle diameter of 0.1 mm or less, kneading the mixture with water, and then subjecting the kneaded product to curing; and a more suitable method, which comprises providing a mixture containing 15 to 55 mass % of a slag from a process of pretreatment of hotmetal having a particle diameter of 1.18 mm or less, 3 to 36 mass % of a blast furnace slag having a particle diameter of 0.1 mm or less, and 1.5 to 30 mass % of a fly ash, wherein the mass ratio of the fly ash to the sum of the blast furnace slag and the fly ash is 0.1 to 0.75, kneading the mixture with water, and then subjecting the kneaded product to curing. Those methods allow the utilization of a slag from a steel making process and also the production of a hardened slag product having a satisfactory strength and being free from the occurrence of surface cracking. The hardened slag product is useful as a material for subbase course of a road, a building material, a material for a civil work or a substitute for concrete.
Inventors:
MATSUNAGA HISAHIRO
TAKAGI MASATO
KOGIKU FUMIO
AIKAWA MAKIKO
TAKAGI MASATO
KOGIKU FUMIO
AIKAWA MAKIKO
Application Number:
PCT/JP2001/002150
Publication Date:
October 04, 2001
Filing Date:
March 19, 2001
Export Citation:
Assignee:
KAWASAKI STEEL CO (JP)
International Classes:
B09B3/00; C04B7/153; C04B18/14; C04B28/08; E01C3/00; C04B103/14; C04B103/32; (IPC1-7): C04B7/147; C04B28/08; E01C5/00; E02B3/14
Foreign References:
| JPH02233539A | 1990-09-17 | |||
| JPH1088220A | 1998-04-07 | |||
| JPH1121153A | 1999-01-26 | |||
| JPH10152364A | 1998-06-09 | |||
| EP0709859A1 | 1996-05-01 |
Attorney, Agent or Firm:
Ochiai, Kenichiro (Uchisaiwaicho 2-chome Chiyoda-ku, Tokyo, JP)
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