Abstract
According to the operating features of aqueducts of water conveyance structures in cold regions, this paper proposed a flexible rehabilitation plan of water sealing by single component polyurea on the surface of expansion joint of an aqueduct. The author conducted a laboratory test to study the tensile strength, bond strength, impermeability, frost resistance and aging resistance of the single-component polyurea. The results showed that the single component polyurea has strong impermeability and frost resistance, excellent aging resistance, large elongation, and high viscosity with concrete. Therefore, the single-component polyurea is suitable for the defect treatment of concrete expansion joints. In a defect treatment project of an aqueduct in the North, a flexible rehabilitation plan of water sealing by single component polyurea was implemented on the defective expansion joint of an aqueduct, and the operation effect still remained good after 3 years. The flexible rehabilitation plan of water sealing is simple and reliable because it does not damage the overall structure of the concrete and is easy to be maintained.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IOP Conference Series: Earth and Environmental Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
