A Case Study of Thaumasite Sulfate Attack in Tunnel Engineering
There existed ever-increasing structural diseases in the Dugongling tunnel after the completion of the construction. Systematic research was carried out based on the information of tunnel engineering geology, disease development, mineral composition of surrounding rock and concrete, and laboratory t...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/8787757 |
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| author | Chongbang Xu Xingyu Zhou Hualao Wang Xiaojing Gao Xuefeng Li |
| author_facet | Chongbang Xu Xingyu Zhou Hualao Wang Xiaojing Gao Xuefeng Li |
| author_sort | Chongbang Xu |
| collection | DOAJ |
| description | There existed ever-increasing structural diseases in the Dugongling tunnel after the completion of the construction. Systematic research was carried out based on the information of tunnel engineering geology, disease development, mineral composition of surrounding rock and concrete, and laboratory tests. Results showed that (1) the concrete structure from the Dugongling tunnel suffered from a typical thaumasite sulfate attack (TSA); (2) tunnel diseases developed under the influence of multiple geological factors such as groundwater, karst, gypsum bearing stratum, and geological tectonics. Groundwater aggravated the appearance of engineering defects of various geological factors and accelerated the softening and swelling of surrounding rock. Moreover, the additional load of supporting structure increased, and the concrete structure was prone to sulfate attack; (3) the development of tunnel diseases showed long-cycle and large-scale characteristics, and the types of diseases are heterogeneous. The tunnel diseases develop rapidly in the third year after the construction. The structure collapse disease, one of the most serious diseases of tunnel lining, occurred in the fifth year after construction; and (4) according to the conditions of TSA, technical treatment measures were proposed. These measures included blocking the flow of CO32−, improving the impermeability of concrete structures, and decreasing the diffusion of external ions and groundwater. This work provides a solution for the treatment of similar tunnel disease and mechanism analysis. |
| format | Article |
| id | doaj-art-fb0d69722dd14a45bcea1ac37e660c72 |
| institution | Kabale University |
| issn | 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-fb0d69722dd14a45bcea1ac37e660c722025-08-20T03:25:57ZengWileyAdvances in Civil Engineering1687-80942021-01-01202110.1155/2021/8787757A Case Study of Thaumasite Sulfate Attack in Tunnel EngineeringChongbang Xu0Xingyu Zhou1Hualao Wang2Xiaojing Gao3Xuefeng Li4Research Institute of Highway Ministry of TransportResearch Institute of Highway Ministry of TransportResearch Institute of Highway Ministry of TransportResearch Institute of Highway Ministry of TransportResearch Institute of Highway Ministry of TransportThere existed ever-increasing structural diseases in the Dugongling tunnel after the completion of the construction. Systematic research was carried out based on the information of tunnel engineering geology, disease development, mineral composition of surrounding rock and concrete, and laboratory tests. Results showed that (1) the concrete structure from the Dugongling tunnel suffered from a typical thaumasite sulfate attack (TSA); (2) tunnel diseases developed under the influence of multiple geological factors such as groundwater, karst, gypsum bearing stratum, and geological tectonics. Groundwater aggravated the appearance of engineering defects of various geological factors and accelerated the softening and swelling of surrounding rock. Moreover, the additional load of supporting structure increased, and the concrete structure was prone to sulfate attack; (3) the development of tunnel diseases showed long-cycle and large-scale characteristics, and the types of diseases are heterogeneous. The tunnel diseases develop rapidly in the third year after the construction. The structure collapse disease, one of the most serious diseases of tunnel lining, occurred in the fifth year after construction; and (4) according to the conditions of TSA, technical treatment measures were proposed. These measures included blocking the flow of CO32−, improving the impermeability of concrete structures, and decreasing the diffusion of external ions and groundwater. This work provides a solution for the treatment of similar tunnel disease and mechanism analysis.http://dx.doi.org/10.1155/2021/8787757 |
| spellingShingle | Chongbang Xu Xingyu Zhou Hualao Wang Xiaojing Gao Xuefeng Li A Case Study of Thaumasite Sulfate Attack in Tunnel Engineering Advances in Civil Engineering |
| title | A Case Study of Thaumasite Sulfate Attack in Tunnel Engineering |
| title_full | A Case Study of Thaumasite Sulfate Attack in Tunnel Engineering |
| title_fullStr | A Case Study of Thaumasite Sulfate Attack in Tunnel Engineering |
| title_full_unstemmed | A Case Study of Thaumasite Sulfate Attack in Tunnel Engineering |
| title_short | A Case Study of Thaumasite Sulfate Attack in Tunnel Engineering |
| title_sort | case study of thaumasite sulfate attack in tunnel engineering |
| url | http://dx.doi.org/10.1155/2021/8787757 |
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