FRP Light-Cured Installation Pipe Lining Method for Rehabilitation of Damaged Installation Pipes
Using materials with durability equal to or greater than that of the main rehabilitation pipe (50-year standard) and high adaptability to bends in existing installation pipes, the damaged installation pipe is rehabilitated without excavation.
This construction method rehabilitates damaged installation pipes without excavation. It uses a cylindrical acid-resistant glass fiber fabric impregnated with light (ultraviolet) curable resin (vinyl ester) in the factory, covered with a light-blocking film after special air degassing, to create an FRP installation pipe liner (BBG). This FRP installation pipe liner (BBG) is mounted on a storage drum of a dedicated construction machine and is inverted or pushed into the existing pipe from the manhole. Compressed air is sent into the liner to expand it, and a light curing device (UV train) is inserted into the liner. After confirming the presence or absence of abnormalities inside the liner with a TV camera attached to the tip, the UV lamp is turned on, and the UV train is pulled at a specified speed from the main pipe side, curing the liner with light to form a strong FRP pipe.
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basic information
【Features】 ● Due to light curing, it hardens quickly and economically, ensuring reliable curing within existing pipes. The vinyl ester resin used has excellent chemical resistance and long-term strain corrosion resistance. ● It is a rehabilitation material with high flexibility that closely follows bends in existing pipes, with minimal occurrence of wrinkles. ● Manufactured in a dedicated factory that has obtained JSO certification, it is produced under strict quality control, ensuring stable quality of the rehabilitation material. ● The FRP installation rehabilitation pipe is made of a material that has durability equal to or greater than that of the main rehabilitation pipe (designed for 50 years). ● The light curing device is equipped with a TV camera, allowing for the confirmation of any abnormalities in the liner before curing. ● The light curing device is equipped with a temperature sensor, which automatically measures the temperature during curing for safety management, and it can automatically print curing management records through a recording device. ● The compact construction equipment allows for work to be carried out in small working areas.
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【Purpose】 ● Rehabilitation of the installation pipe
Company information
Since its establishment, our company has played a role in national construction, primarily focusing on the "ground improvement field" with our unique grouting method. Subsequently, in response to the changes in social infrastructure development, we have refined our technologies to adapt to the needs of the times and, at times, acquired new ones to expand our business scope. As a result, we have now established three main pillars: "ground improvement business," "slope disaster prevention business," and "pipeline business."
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