Multi-layered cementitious composition prefabricated prismatic member
OwnerChung Wai SOinventor
Life of this patent
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Abstract
A multi-layered composite member that includes cementitious layer that expands when cured. The composite member includes an inner layer having a first cementitious material and an outer layer, the inner layer substantially covers an inner surface of the outer layer and the first cementitious material is an expansive material that exerts a force against the inner surface of the outer layer. Also, the preparation of the composite member and use of the composite member, e.g., as a pipeline or building component, are disclosed.
Claims24
A prefabricated composite member comprising:
- an inner layer comprising a first cementitious material, and
- an outer layer,
- wherein the inner layer substantially covers an inner surface of the outer layer and the first cementitious material is an expansive material that exerts an expansive force against the inner surface of the outer layer thereby creating a mechanical coupling, and
- the outer layer comprises a second cementitious material, or
- the outer layer comprises a metal, a polymer, a composite or a combination of any two or more thereof, and the prefabricated composite member further comprises a coating layer on an outer surface of the outer layer and the coating layer comprises the second cementitious material.
A method of manufacturing a prefabricated composite member comprising an inner layer comprising a first cementitious material that expands when cured, a formwork layer and an outer layer comprising a second cementitious material, wherein the inner layer contacts an outer surface of the formwork layer and an inner surface of the outer layer, wherein the method comprises:
- providing the formwork layer and the outer layer with a cavity between the two layers,
- casting an uncured mixture of the first cementitious material into the cavity between the formwork layer and the outer layer, and
- curing the first cementitious material to provide the composite member.
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Dependencies are inferred from the claim text.