Product for coating the internal surface of a conduit, method and machine using same and conduit coated with same
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United States of America Patent
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Oct 14, 2003
Grant Date -
Apr 25, 2002
app pub date -
Jun 9, 1999
filing date -
Oct 10, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a product for the internal coating of a pipeline component (1), in particular a metal pipeline component, comprising an internal wall (4) of high curvature. This product comprises a solid charge and a liquid. The liquid is a solution of an alkali metal silicate and the solid charge comprises sand, between 20 and 30% by mass of a binder which sets chemically by reaction with the liquid, and between 4 and 10% by mass of plasticizing adjuvants. The solid charge and the liquid are intended to be mixed (in 5) with a liquid/binder ratio by mass of between approximately 0.3 and 0.45. Application to pipelines for discharge of waste water made of spheroidal graphite cast iron.
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