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US 2021/0380476 A1Published application
Spraying uhpfrc for reinforcement and regeneration of pre-existing structures
AssigneeSoletanche Freyssinet
InventorsAlain HUYNH TUONG, Bertrand PETIT, François TEPLY, Cédric-Olivier CHAUX
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Abstract
A method for reinforcing a structure comprising the following steps: preparation of UHPFRC comprising a cement precursor mix, of water, a fluidizing agent and metal fibers, transporting the UHPFRC by pumping to a suitable spray nozzle, spraying the mix onto a surface of the structure by the addition of a compressed air stream in the spray nozzle.
Claims10
A method for reinforcing a structure comprising the following steps:
- preparing UHPFRC comprising a cement precursor mix, of water, a fluidizing agent and metal fibers comprising at least 2% by volume of concrete,
- transporting the UHPFRC by pumping to a spray nozzle,
- spraying the mixture onto a surface of the structure by the addition of a compressed air stream in the spray nozzle.
Dependencies are inferred from the claim text.