Abstract
The concrete cracks in an underground structure which usually result in serious water leakage are generally treated by grouting repair. However, the widely used cement-sodium silicate (C-S) grouting material for treatment has drawbacks. One is that the gelation time is so short that the grouted slurry will be likely to plug the grouting pipe; the other is that the C-S material has low corrosion resistance against water so the strength of the C-S material will decrease sharply after interaction with the underground water. By considering the disadvantages of the traditional C-S material, this study improves the C-S material with ultrafine fly ash (UFA) and Na2HPO4 and obtains its proper proportion by testing. In addition, a new grouting technology for concrete crack treatment is proposed for underground concrete structure. The modified C-S material and the repair technology have been successfully applied in a typical underground project suffering from serious water leakage, and it shows excellent repair effect. This study can provide theoretical and empirical reference for similar underground engineering.
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 callDisclaimer: 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.
