Study on the Durability of Concrete under an Underwater Coupling Environment
The durability of the concrete structure under the coupling effect of underwater corrosion particles has always been one of the hot issues at home and abroad. Aiming at the damage problem of the underground concrete structure in a marine and offshore chloride corrosion environment, based on the pile...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/1798000 |
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| author | Chunhua You Gen He |
| author_facet | Chunhua You Gen He |
| author_sort | Chunhua You |
| collection | DOAJ |
| description | The durability of the concrete structure under the coupling effect of underwater corrosion particles has always been one of the hot issues at home and abroad. Aiming at the damage problem of the underground concrete structure in a marine and offshore chloride corrosion environment, based on the pile foundation engineering of the Coastal Industrial Park, the corrosion resistance test of pile foundation concrete is carried out. By preparing 7 kinds of pile foundation concrete samples with different mix proportions, the mechanical properties of concrete with different ages were analyzed under the coupling environment of groundwater. The chloride penetration resistance of concrete was analyzed by the RCM method, and the sulfate corrosion resistance was analyzed by the 17D accelerated simulation test. The test results show that with the decrease of the water-cement ratio and the increase of the cementitious material, the concrete damage is less and the durability is improved. It is suggested that the water-cement ratio of 0.34 and the cementitious material of 480 kg/m3 be selected for the preparation of the pile foundation concrete; when the content of fly ash is 15%, the antisulfuric acid corrosion ability of the concrete cementitious system can be enhanced and the concrete with 40% mineral powder has strong antichloride ion corrosion ability; the results show that the chloride diffusion coefficient of concrete samples with seven mix proportions is less than 6∗10–12 m2/s, which can meet the durability design requirements and reduce the damage of concrete. The sulfate corrosion resistance of concrete samples with high-efficiency additives is the best. |
| format | Article |
| id | doaj-art-466e1dd248424941a2d970cb8d5631b8 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-466e1dd248424941a2d970cb8d5631b82025-02-03T01:24:42ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/17980001798000Study on the Durability of Concrete under an Underwater Coupling EnvironmentChunhua You0Gen He1School of Architecture Engineering and Art Design, Hunan Institute of Technology, Hengyang 421002, ChinaSchool of Architecture Engineering and Art Design, Hunan Institute of Technology, Hengyang 421002, ChinaThe durability of the concrete structure under the coupling effect of underwater corrosion particles has always been one of the hot issues at home and abroad. Aiming at the damage problem of the underground concrete structure in a marine and offshore chloride corrosion environment, based on the pile foundation engineering of the Coastal Industrial Park, the corrosion resistance test of pile foundation concrete is carried out. By preparing 7 kinds of pile foundation concrete samples with different mix proportions, the mechanical properties of concrete with different ages were analyzed under the coupling environment of groundwater. The chloride penetration resistance of concrete was analyzed by the RCM method, and the sulfate corrosion resistance was analyzed by the 17D accelerated simulation test. The test results show that with the decrease of the water-cement ratio and the increase of the cementitious material, the concrete damage is less and the durability is improved. It is suggested that the water-cement ratio of 0.34 and the cementitious material of 480 kg/m3 be selected for the preparation of the pile foundation concrete; when the content of fly ash is 15%, the antisulfuric acid corrosion ability of the concrete cementitious system can be enhanced and the concrete with 40% mineral powder has strong antichloride ion corrosion ability; the results show that the chloride diffusion coefficient of concrete samples with seven mix proportions is less than 6∗10–12 m2/s, which can meet the durability design requirements and reduce the damage of concrete. The sulfate corrosion resistance of concrete samples with high-efficiency additives is the best.http://dx.doi.org/10.1155/2021/1798000 |
| spellingShingle | Chunhua You Gen He Study on the Durability of Concrete under an Underwater Coupling Environment Geofluids |
| title | Study on the Durability of Concrete under an Underwater Coupling Environment |
| title_full | Study on the Durability of Concrete under an Underwater Coupling Environment |
| title_fullStr | Study on the Durability of Concrete under an Underwater Coupling Environment |
| title_full_unstemmed | Study on the Durability of Concrete under an Underwater Coupling Environment |
| title_short | Study on the Durability of Concrete under an Underwater Coupling Environment |
| title_sort | study on the durability of concrete under an underwater coupling environment |
| url | http://dx.doi.org/10.1155/2021/1798000 |
| work_keys_str_mv | AT chunhuayou studyonthedurabilityofconcreteunderanunderwatercouplingenvironment AT genhe studyonthedurabilityofconcreteunderanunderwatercouplingenvironment |