IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0138786
(1993-10-19)
|
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발명자
/ 주소 |
- Hyde-Smith Peter K. (Mayville MI) Houvras Yeara (West Bloomfield MI)
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| 출원인 / 주소 |
- Foamseal, Inc. (Oxford MI 02)
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| 인용정보 |
피인용 횟수 :
21 인용 특허 :
0 |
초록
▼
This invention relates to a method of repairing existing manholes and similar structures by applying a fast-curing elastomeric material using spray techniques whereby a homogeneous, non-porous, and monolithic coating or lining is formed. The fast-curing elastomeric material can be applied directly t
This invention relates to a method of repairing existing manholes and similar structures by applying a fast-curing elastomeric material using spray techniques whereby a homogeneous, non-porous, and monolithic coating or lining is formed. The fast-curing elastomeric material can be applied directly to existing substrates, which may comprise of concrete, brick, tile, mortar, and metal surfaces normally found in sewer manholes and catch basins, sewer and drainage pipes, parking decks, bridge piers and footings, holding ponds, bridge trusses, culverts, gratings, and the like and does not require any formwork. More preferably, the substrate surfaces are first cleaned and primed to improve the bond of elastomeric coating to the substrate. The most preferred primer is an aqueous solution of silane, preferably containing 10% to 30% silane. The elastomeric coatings provide effective surface protection against water infiltration, wear, and corrosion and can be applied in a single operation to horizontal, vertical, and overhead surfaces. The elastomeric materials are prepared by initiating the reaction of an isocyanate-terminated compound or polymer with an amine-terminated polymer or an aliphatic or aromatic diamine immediately before applying the elastomeric material to the surface to be coated. Preferably the reactive component (i.e., isocyante-containing and amine-containing materials) are mixed directly in the spray gun used to apply the elastomeric material.
대표청구항
▼
A method for lining or relining an existing engineering structure to rehabilitate, reinforce, and protect the engineering structure, said method comprising: a. preparing the surface of the engineering structure to be lined or relined by cleaning the brick, tile, concrete block, concrete, mortar, or
A method for lining or relining an existing engineering structure to rehabilitate, reinforce, and protect the engineering structure, said method comprising: a. preparing the surface of the engineering structure to be lined or relined by cleaning the brick, tile, concrete block, concrete, mortar, or foreign material from the surface; b. spraying a liquid primer on the surface of the engineering structure, said primer adapted to promote adhesion of an elastomeric material to said engineering structure; c. applying a polyurea elastomeric material to the prepared surface of the engineering structure to be lined or relined by spraying the elastomeric material onto the prepared surface whereby a monolithic, continuous polyurea elastomeric coating is formed on the prepared surface, wherein the fast-curing polyurea elastomeric material is prepared by rapidly mixing and initiating the reaction of an isocyanate-terminated compound having reactive isocyanate groups with an amine-terminated compound having reactive amine groups immediately before spraying the elastomeric material onto the prepared surface; and d. allowing the fast-curing polyurea elastomeric coating to cure, whereby an elastomeric polyurea liner is formed on the prepared surface to rehabilitate, reinforce, and protect the engineering structure.
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