Title:
結晶化溶融スラグを細骨材としたコンクリート製品
Document Type and Number:
Japanese Patent JP3576480
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To develop a crystallized slag for a fine aggregate which improves a hardness, a density, an achievement rate or the like of an amorphous molten slag such as a granulated blast furnace slag, and to provide a concrete product whose mechanical strengths such as a compressive strength using the crystallized slag of 50-100%, instead of an existing fine aggregate shows an equivalent or a better performance compared with the conventional concrete product, and to establish its production method. SOLUTION: The amorphous molten slag such as the granulated blast furnace slag is heat-treated and crystallized within an optimum heat treatment temperature range of the slag determined by using the heat treatment temperature relation curve, then crushing to powders, the concrete product which uses the slag which is the crystallized slag of a high achievement rate, a high hardness and a high density obtained by wearing out and crushing as the fine aggregate, is provided, the optimum heat treatment temperature range is the heat treatment temperature range which shows the near maximum hardness from the heat treatment temperature which shows at least the increase of hardness of 10% or more than the hardness of the untreated slag, and the temperature range is the heat treatment temperature range which shows the near maximum hardness from the heat treatment temperature which shows at least the increase of hardness of 20% or more than the hardness of the untreated slag.
More Like This:
| JPH1143357 | PRODUCTION OF AGGREGATE AND PRODUCTION UNIT THEREFOR |
| JPS56169168 | SUPER LIGHTWEIGHT AGGREGATE |
Inventors:
Tsutomu Nagao
Fumishi Katayama
Hiroshi Sakai
Yoshito Kondo
Kozo Yokota
Rie Nakahara
Fumishi Katayama
Hiroshi Sakai
Yoshito Kondo
Kozo Yokota
Rie Nakahara
Application Number:
JP2000344461A
Publication Date:
October 13, 2004
Filing Date:
November 10, 2000
Export Citation:
Assignee:
Kagawa Prefecture
Nagao Concrete Industry Co., Ltd.
Nagao Concrete Industry Co., Ltd.
International Classes:
C04B18/04; C04B5/00; C04B18/14; C04B28/02; C04B28/04; (IPC1-7): C04B18/14; C04B5/00; C04B28/02
Domestic Patent References:
| JP6279084A | ||||
| JP5326818A | ||||
| JP2002201050A |
Attorney, Agent or Firm:
Asako Sudo