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Title:
CHEMICAL-RESISTANT PIPE AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH10330176
Kind Code:
A
Abstract:

To obtain chemical-resistant pipe excellent in liquid-blocking property and having high strength at a low cost, by impregnating and/or covering the inner side of the pipe section formed by cement-based material comprising at least cement, fine aggregate, chloroprene and water with chloroprene.

This chemical-resistant pipe is mainly used as a Hume pipe for civil engineering and construction and is produced according to the following processes: (1) pouring into a rotary molding apparatus cement-type base material such as cement, fine aggregate, etc., with water; (2) further pouring mortar added with cation-type chloroprene latex without unmolding it just as it is and then removing water followed by finishing molding; (3) unmolding to form the pipe section. It is suitable that the ratio of chloroprene to cement is about 3-20 wt.% and the ratio of fine aggregate to cement is about 0-300 wt.%.


Inventors:
ICHIKAWA YOICHI
Application Number:
JP14055897A
Publication Date:
December 15, 1998
Filing Date:
May 29, 1997
Export Citation:
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Assignee:
SHOWA DENKO KENZAI KK
International Classes:
C04B41/63; B28B21/94; C04B41/48; (IPC1-7): C04B41/63; B28B21/94
Domestic Patent References:
JPH03247578A1991-11-05
JPH03164459A1991-07-16
JPH02217346A1990-08-30
JPH04323005A1992-11-12
JPH02162002A1990-06-21
JPH01301307A1989-12-05
JPH01164779A1989-06-28
JPS5227418A1977-03-01
Attorney, Agent or Firm:
Masatake Shiga (2 outside)