The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2022
Filed:
Jun. 03, 2020
Welead Infrastructure Engineering Technology (Zhengzhou), Ltd., Henan, CN;
Safekey Engineering Technology (Zhengzhou), Ltd., Henan, CN;
Fuming Wang, Henan, CN;
Hongyuan Fang, Henan, CN;
Kejie Zhai, Henan, CN;
Peng Zhao, Henan, CN;
Yanhui Pan, Henan, CN;
Abstract
A in-service repair method combing externally bonded pre-stressed FRP and polymer grouting for PCCP with broken wire, includes excavating PCCP, supporting the PCCP, treating outer wall of PCCP, bonded an external of the PCCP with pre-stressed FRP for repairing, laying grouting pipe, backfilling and grouting for densing. First of all, excavating a PCCP pipeline to be repaired and supporting the PCCP pipeline with a supporting device, smoothing the outer wall of the PCCP pipeline at a broken wire position and applying primer, and winding the FRP around a damaged portion of the PCCP pipeline, pre-stressing the FRP by applying a pre-stressing device and applying dipping glue to the FRP after tension to stick the FRP on the pipe wall, then laying a grouting pipe, backfilling the pipeline repaired, and finally injecting polymer into the soil after backfilling and compacting the soil by the grouting pipe pre-buried.