Method for renovating the interior of a hollow structure
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United States of America Patent
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Jul 25, 2023
Grant Date -
Jun 4, 2020
app pub date -
May 28, 2018
filing date -
May 26, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A method for renovating the interior of a hollow structure such as a sewerage pit (1) is described. The method provides an access opening (16) to the hollow structure (1); provides a plurality of material sheets (3) comprising reinforcing fibers and a curable resin composition through the access opening (16) and against a wall (11a, 11b) of the hollow structure (1); and provides an inflatable pressure means (4a, 4b) within the hollow structure (1). The pressure means (4a, 4b) are inflated against the wall (11a, 11b). A curing means (6) is then provided within the hollow structure (1) for curing the resin composition; and the resin composition is cured to harden the material sheets and provide a renovated interior of the hollow structure (1).
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