Corrosion protection in concrete sanitary sewers
AssigneePSC Technologies, Inc.
InventorThomas Michael Miller
Life of this patent
Estimating the term…
Abstract
A method for protecting concrete surfaces of sanitary sewers includes the steps of providing a concrete surface in a sanitary sewer environment; and coating the concrete surface with magnesium hydroxide or magnesium oxide.
Claims45
A method for protecting concrete surfaces of sanitary sewers from corrosion, comprising the steps of:
- providing a concrete surface forming part of sanitary sewer;
- and
- forming a layer made substantially of magnesium hydroxide on the concrete surface.
A method for protecting concrete surfaces of a sanitary sewer from corrosion, comprising the steps of:
- providing a concrete surface forming part of a sanitary sewer;
- and
- forming a layer made substantially of magnesium oxide on the concrete surface.
A method for protecting concrete surfaces of a sanitary sewer comprising the steps of:
- providing a concrete surface in a sanitary sewer environment;
- and
- coating the concrete surface with a magnesium oxide slurry, and the slurry includes sodium silicate so that when dry, the slurry yields a hard alkaline material composite of unhydrated magnesium oxide encapsulated in sodium silicate.
A method for protecting concrete surfaces of a sanitary sewer from corrosion comprising the steps of:
- providing a concrete surface forming part of a sanitary sewer;
- and
- coating the concrete surface with a magnesium oxide slurry, the slurry including:
- ______________________________________ Chemical Analysis (loss free basis) Wt. % ______________________________________ MgO about 92-98.5% CaO about .5-3.5% insolubles about .5-3.0% viscosity, cps about 500-10,000 density, lb/gal about 11.2-11.8 % solids by wt % about 45-55%. ______________________________________
A method for protecting concrete surfaces of a sanitary sewer comprising the steps of:
- providing a concrete surface in a sanitary sewer environment;
- and
- coating the concrete surface with a hydrating magnesium oxide slurry, and the slurry has a viscosity between about 500 and 5000 centipoise.
A method for protecting concrete surfaces of a sanitary sewer from corrosion, comprising the steps of:
- providing a concrete surface forming part of a sanitary sewer;
- and
- coating the concrete surface with magnesium oxide to form a layer made substantially of magnesium hydroxide.
A method for protecting concrete surfaces from corrosion, comprising the step of:
- forming a layer made substantially of magnesium oxide on a concrete surface.
A method for protecting concrete surfaces from corrosion, comprising the step of:
- forming a layer made substantially of magnesium hydroxide on a concrete surface.
Dependencies are inferred from the claim text.