Influence of hoop restraint on damage evolution, ions diffusion and multi-scale mechanical properties in concrete exposed to external sulfate attack
This paper presents a systematic study on the influence of the hoop restraint effect of steel tubes on the damage evolution, ions diffusion and multi-scale mechanical properties changes in concrete specimens under the external sulfate attacks (ESA). Visual appearance, ion diffusion, dynamic modulus...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424030540 |
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| author | Jierong Cao Liping Xu Gang Xu Ming Jin Qingjun Ding Jiaping Liu Chuansheng Xiong Zuquan Jin |
| author_facet | Jierong Cao Liping Xu Gang Xu Ming Jin Qingjun Ding Jiaping Liu Chuansheng Xiong Zuquan Jin |
| author_sort | Jierong Cao |
| collection | DOAJ |
| description | This paper presents a systematic study on the influence of the hoop restraint effect of steel tubes on the damage evolution, ions diffusion and multi-scale mechanical properties changes in concrete specimens under the external sulfate attacks (ESA). Visual appearance, ion diffusion, dynamic modulus of elasticity and Vickers hardness were used to characterise the damage evolution, diffusion characteristics and macro/micro-mechanical changes of free/restrained expansion specimens caused by the ESA. Results indicate a lower permeation rate of sulfate ions into the matrix interior and a leaching rate of calcium ions from the matrix in the restrained expansion specimens compared with the free expansion ones. The hoop restraining stresses induced by the hoop restraint suppress the cracking of specimens, leading to a higher dynamic modulus of elasticity and Vickers hardness value in the restrained expansion specimens compared with the free expansion ones, which significantly reduces the deterioration exposed to the ESA. Hopefully, this study may offer the theoretical basis for the design of sustainable and durable concrete under the ESA. |
| format | Article |
| id | doaj-art-880cacb6d2bb470a96b88783503cdcc9 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-880cacb6d2bb470a96b88783503cdcc92025-01-19T06:25:58ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013424912500Influence of hoop restraint on damage evolution, ions diffusion and multi-scale mechanical properties in concrete exposed to external sulfate attackJierong Cao0Liping Xu1Gang Xu2Ming Jin3Qingjun Ding4Jiaping Liu5Chuansheng Xiong6Zuquan Jin7School of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaWater Resources Survey and Design Institute Co., Ltd, Yangzhou, 225000, ChinaWater Resources Survey and Design Institute Co., Ltd, Yangzhou, 225000, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaSchool of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; Corresponding author.School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Corresponding author.College of Civil Engineering, Qingdao University of Technology, Qingdao, 266000, ChinaCollege of Civil Engineering, Qingdao University of Technology, Qingdao, 266000, ChinaThis paper presents a systematic study on the influence of the hoop restraint effect of steel tubes on the damage evolution, ions diffusion and multi-scale mechanical properties changes in concrete specimens under the external sulfate attacks (ESA). Visual appearance, ion diffusion, dynamic modulus of elasticity and Vickers hardness were used to characterise the damage evolution, diffusion characteristics and macro/micro-mechanical changes of free/restrained expansion specimens caused by the ESA. Results indicate a lower permeation rate of sulfate ions into the matrix interior and a leaching rate of calcium ions from the matrix in the restrained expansion specimens compared with the free expansion ones. The hoop restraining stresses induced by the hoop restraint suppress the cracking of specimens, leading to a higher dynamic modulus of elasticity and Vickers hardness value in the restrained expansion specimens compared with the free expansion ones, which significantly reduces the deterioration exposed to the ESA. Hopefully, this study may offer the theoretical basis for the design of sustainable and durable concrete under the ESA.http://www.sciencedirect.com/science/article/pii/S2238785424030540ConcreteSulfate attackHoop restraintDamage evolutionIons diffusionMulti-scale mechanical properties |
| spellingShingle | Jierong Cao Liping Xu Gang Xu Ming Jin Qingjun Ding Jiaping Liu Chuansheng Xiong Zuquan Jin Influence of hoop restraint on damage evolution, ions diffusion and multi-scale mechanical properties in concrete exposed to external sulfate attack Journal of Materials Research and Technology Concrete Sulfate attack Hoop restraint Damage evolution Ions diffusion Multi-scale mechanical properties |
| title | Influence of hoop restraint on damage evolution, ions diffusion and multi-scale mechanical properties in concrete exposed to external sulfate attack |
| title_full | Influence of hoop restraint on damage evolution, ions diffusion and multi-scale mechanical properties in concrete exposed to external sulfate attack |
| title_fullStr | Influence of hoop restraint on damage evolution, ions diffusion and multi-scale mechanical properties in concrete exposed to external sulfate attack |
| title_full_unstemmed | Influence of hoop restraint on damage evolution, ions diffusion and multi-scale mechanical properties in concrete exposed to external sulfate attack |
| title_short | Influence of hoop restraint on damage evolution, ions diffusion and multi-scale mechanical properties in concrete exposed to external sulfate attack |
| title_sort | influence of hoop restraint on damage evolution ions diffusion and multi scale mechanical properties in concrete exposed to external sulfate attack |
| topic | Concrete Sulfate attack Hoop restraint Damage evolution Ions diffusion Multi-scale mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424030540 |
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