Title:
CONDUIT MATERIAL
Document Type and Number:
Japanese Patent JP3751067
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a conduit material having excellent corrosion resistance by using a concrete product in which almost spherical electric furnace oxidized slag particulates having fine ruggedness on the surface as fine aggregates are dispersed in a cement hardened matrix.
SOLUTION: A fused product of the electric furnace oxidized slag is poured into a high-speed rotating drum with blades, crushed and granulated, and then quenched under a water mist atmosphere to produce fine aggregates with almost spherical shape having ≤ about 2.5mm particle size, specific gravity of 3.5-3.8 and fine ruggedness on the surface or having a hollow structure. Next, a cement slurry is produced by mixing 100 pts., by wt., cement such as Portland cement, 300-600 pts. the fine aggregates, proper quantity of other fine aggregates such as silica sand, silica, a cement hardening control agent, a water reducing agent and about 25-60 pts. water. This cement slurry is molded to a pipe shape, a trough shape, a measure shape or a box culvert shape, etc., by a pouring molding method pouring the slurry into a flask or by an extrusion molding method to obtain the conduit material of the concrete molding in which the fine aggregates is dispersed.
Inventors:
Eiji Fuchigami
Yuji Hattori
Yuji Hattori
Application Number:
JP6912096A
Publication Date:
March 01, 2006
Filing Date:
February 28, 1996
Export Citation:
Assignee:
Chubu Kotetsu Co., Ltd.
International Classes:
C04B28/02; F16L57/00; B28B21/02; B28B23/02; C04B18/14; (IPC1-7): C04B28/02; B28B23/02; C04B18/14; F16L57/00; //B28B21/02
Domestic Patent References:
| JP49109420A | ||||
| JP58137498A | ||||
| JP59013651A | ||||
| JP8157246A | ||||
| JP9030854A |
Attorney, Agent or Firm:
Tadao Usami