US4086309A
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US
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Method for sealing cracks and cavities in different kinds of building constructions, such as building constructions in rock, concrete, brickwork and timber
Abstract A method for sealing cracks and cavities in different kinds of building constructions, such as building constructions in rock, concrete, brickwork and timber is disclosed, according to which holes communicating with the cracks or cavities are driven into the building construction. These holes are sealed outwardly and put in connection with a vacuum source so that the water present in the cracks or cavities is sucked by the negative pressure in the direction towards the holes. Crack sealing material e.g. cement, epoxy tar, setting plastic, silicate based sealant or the like, is then applied to the cracks or cavities and is, due to the negative pressure prevailing in them, drawn into its sealing positions in the building construction, where it is allowed to harden or set under the influence of the negative pressure.
A method for sealing water conveying cracks and cavities containing water therein in building constructions in rock, concrete, brickwork and timber which comprises drilling at least one hole into said building construction adjacent said water conveying crack or cavity and in communication therewith, sealing said hole in vacuum communication with a vacuum in source, maintaining a vacuum said hole for removing the water conveyed by said crack or cavity through said hole, applying a crack or cavity sealing material to said crack or cavity while maintaining said hole in communication with said vacuum source whereby said crack or cavity sealing material is drawn into crack or cavity and hardening said crack or cavity sealing material.
Claim 2
Independent Claim
115 words
A method for sealing water conveying cracks and cavities containing water therein in building constructions in rock, concrete, brickwork and timber which comprises drilling at least one hole into said building construction adjacent said water conveying crack or cavity and in communication therewith, sealing said hole in vacuum communication with a vacuum in source, maintaining a vacuum said hole for removing the water conveyed by said crack or cavity through said hole, applying a crack or cavity sealing material to said crack or cavity while maintaining said hole in communication with said vacuum source whereby said crack or cavity sealing material is drawn into crack or cavity and hardening said crack or cavity sealing material.