We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Modified cement-sodium silicate material and grouting technology for repairing underground concrete structure cracks.
- Authors
Zhang, Bin; Gao, Feng; Zhang, Xuefu; Zhou, Yuanfu; Hu, Beilun; Song, Heyang
- 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.
- Publication
Arabian Journal of Geosciences, 2019, Vol 12, Issue 22, p1
- ISSN
1866-7511
- Publication type
Article
- DOI
10.1007/s12517-019-4878-y