FINE-GRAIN MIXTURE FOR APPLYING AN ANTI-CORROSION COATING ON THE INNER SURFACES OF PIPES

WIPO Patent Application WO/1999/065996

A1

The present invention can be used for protecting steel pipes against corrosion, in particular those used in thermal networks. This invention essentially relates to a fine-grain mixture used for applying an anti-corrosion coating on the inner surface of a pipe, wherein said mixture includes a binder, sand, water as well as additives. In order to increase the strength of the coating obtained from the mixture, the binder in said mixture consists of a cement composition while the additive consists of an aqueous solution comprising a C-3 super-plastifier and a sugar liquor. The components of the mixture are selected in the following amounts: concerning the cement composition, from 22.3 to 18.2 wt.% of a binder with a low water demand of 100; from 13.4 to 10.9 wt.% of a binder with a low water demand of 70; from 8.47 to 6.9 wt.% of a Portland cement having a DO grade of at least M 400; from 0.03 to 0.028 wt.% of a C-3 super-plastifier; from 0.22 to 0.072 wt.% of a sugar liquor; from 44.6 to 54.7 wt.% of sand; and from 10.98 to 9.2 wt.% of water.

MAKAGONOV VIKTOR ALEXANDROVICH (RU)
POPOV LEONID PAVLOVICH (RU)
TARAN SERGEI PAVLOVICH (RU)
BURENKOV VLADIMIR IVANOVICH (RU)
MYALKIN SERGEI MIKHAILOVICH (RU)

PCT/RU1998/000239

December 23, 1999

July 24, 1998

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26 TSNII MIN OBORONY (RU)
TOVARISHESTVO S OGRANICHENNOI (RU)
MAKAGONOV VIKTOR ALEXANDROVICH (RU)
POPOV LEONID PAVLOVICH (RU)
TARAN SERGEI PAVLOVICH (RU)
BURENKOV VLADIMIR IVANOVICH (RU)
MYALKIN SERGEI MIKHAILOVICH (RU)

C04B28/00; C09D1/08; F16L58/06; F16L58/10; (IPC1-7): C09D1/06; F16L58/06

RU2091344C1	1997-09-27
EP0255322A2	1988-02-03
EP0208535A1	1987-01-14
SU1278532A1	1986-12-23

Popov, Leonid Pavlovich (18-122 Moscow, 9, RU)
Popov, Leonid Pavlovich (18-122 Moscow, 9, RU)

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