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US 4,060,953 AGranted
Artificial and natural structures
AssigneeBalfour Beatty Limited
InventorJames Milne
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AssigneeBalfour Beatty Limited
InventorJames Milne
Estimating the term…
Voids in an artificial or natural structure are filled with a hardenable material in a liquid or semi-liquid state by surrounding the structure or a part of the structure containing the voids by a closely fitting, fluid-impermeable covering and sealing boundary edges of the covering to the structure to form a substantially fluid-tight enclosure. Air is evacuated from the voids within the fluid-tight enclosure and hardenable material in a liquid or semi-liquid state is allowed to enter into the evacuated voids until the hardenable material appears at the openings of the voids in the surface or surfaces of the structure. The hardenable material is then permitted or caused to set. The covering may be formed wholly or in part by at least one closely fitting, flexible, fluid-impermeable shroud, which is preferably transparent. At least part of the covering may comprise at least one closely fitting, fluid-impermeable coating.
A method of strengthening artificial and natural structures having voids therein by introducing a hardenable material in a liquid or semi-liquid state into said voids in the structure, at least some of which voids have openings in at least one surface of the structure, which method comprises surrounding at least a part of the structure containing the voids that are to be filled by a closely fitting, flexible, fluid-impermeable shroud and sealing boundary edges of the shroud to the structure to form a substantially fluid-tight enclosure;
A method of strengthening artificial and natural structures having voids therein by introducing hardenable material in a liquid or semi-liquid state into said voids in the structure, at least some of which voids have openings in at least one surface of the structure, which method comprises surrounding at least a part of the structure containing the voids that are to be filled by a closely fitting, fluid-impermeable covering and sealing boundary edges of the covering to the structure to form a substantially fluid-tight enclosure;
A method of strengthening artificial and natural structures having voids therein by introducing a hardenable material in a liquid or semi-liquid state into said voids in the structure, at least some of which voids have openings in at least one surface of the structure, which method comprises surrounding at least a part of the structure containing the voids that are to be filled by a closely fitting, fluid-impermeable covering formed at least in part by applying to at least one exposed surface of the structure a continuous layer of hardenable material in a liquid or semi-liquid state;
Dependencies are inferred from the claim text.