Research on the influence of concrete damage in wharf structures under fatigue loads on chloride ion diffusion

Research on the influence of concrete damage in wharf structures under fatigue loads on chloride ion diffusion | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Research on the influence of concrete damage in wharf structures under fatigue loads on chloride ion diffusion xubing xu, Yonglai Zheng, Chenyu Hou, Tanbo Pan This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3841154/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract In the marine environment, harbor structures are prone to fatigue damage due to long-term berthing load, accelerating chloride erosion and leading to steel corrosion, thus significantly reducing the durability and service performance of reinforced concrete structures. To investigate the influence of fatigue damage on chloride ion diffusion, this paper simulated the damage degradation process of structures under fatigue load and chloride ion erosion through experiments. The damage caused by fatigue load was defined by ultrasonic method, and the study investigated the effects of different stress levels and loading cycles on chloride ion transport. The chloride ion diffusion concentration under different damage conditions was predicted by numerical simulation. The results indicate that the fatigue load leads to the increase of load level and the increase of chloride ion content at the same depth. The increase of loading times accelerates the penetration rate, which is positively correlated with the chloride ion diffusivity. The chloride ion diffusion coefficient of concrete exhibits an exponential relationship with fatigue damage levels. The numerical simulation results are consistent with the experimental results, validating the feasibility of establishing a correspondence between thermodynamic diffusion and chloride ion diffusion parameters using the analogy method. This paper provides reliable support for the performance assessment and maintenance of reinforced concrete structures in marine environments. harbor structures fatigue load chloride ion diffusion damage numerical simulation Full Text Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-3841154","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":268872181,"identity":"86f51766-ad75-42f9-89fd-157e57ab506b","order_by":0,"name":"xubing xu","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAxUlEQVRIiWNgGAWjYFACHsYHIIqxGcQmUguzwQFStbBJHICzidFgcCP3WPWHijt2ze0MjA/etjHImxPSItlzLu3GgTPPkhubGZgN57YxGO5sIKCFn73H7MbBtsPJQL+wSfO2MSQYHCCghY2Zx6wAqoX9N1FaQLYwALXYgWxhJkoL0C/JEmfOHE5gbGZslpxzTsJwAyEtwBA7+KGi4rC9Yf/hgx/elNnIE7QFBhI3NjA2AGkJItUDgb088WpHwSgYBaNgpAEASbM/b8CJ6hwAAAAASUVORK5CYII=","orcid":"","institution":"Tongji University College of Civil Engineering","correspondingAuthor":true,"prefix":"","firstName":"xubing","middleName":"","lastName":"xu","suffix":""},{"id":268872182,"identity":"cdef5a45-af97-403e-a6d5-d121febbd7da","order_by":1,"name":"Yonglai Zheng","email":"","orcid":"","institution":"Tongji University College of Civil Engineering","correspondingAuthor":false,"prefix":"","firstName":"Yonglai","middleName":"","lastName":"Zheng","suffix":""},{"id":268872183,"identity":"056c6861-2b1c-4567-a66b-bacbe923a04c","order_by":2,"name":"Chenyu Hou","email":"","orcid":"","institution":"Tongji University College of Civil Engineering","correspondingAuthor":false,"prefix":"","firstName":"Chenyu","middleName":"","lastName":"Hou","suffix":""},{"id":268872184,"identity":"035128b1-cf9f-4374-98bd-75cccd6a8e9e","order_by":3,"name":"Tanbo Pan","email":"","orcid":"","institution":"Tongji University College of Civil Engineering","correspondingAuthor":false,"prefix":"","firstName":"Tanbo","middleName":"","lastName":"Pan","suffix":""}],"badges":[],"createdAt":"2024-01-07 02:54:15","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-3841154/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-3841154/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":62587981,"identity":"36cfd59f-c5c1-4961-9b4c-e5bd8135938f","added_by":"auto","created_at":"2024-08-16 07:26:08","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":692306,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3841154/v1_covered_cfe82afd-47cb-487a-a9e9-757be10a80a0.pdf"}],"financialInterests":"","formattedTitle":"Research on the influence of concrete damage in wharf structures under fatigue loads on chloride ion diffusion","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":true,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"harbor structures, fatigue load, chloride ion diffusion, damage, numerical simulation","lastPublishedDoi":"10.21203/rs.3.rs-3841154/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3841154/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn the marine environment, harbor structures are prone to fatigue damage due to long-term berthing load, accelerating chloride erosion and leading to steel corrosion, thus significantly reducing the durability and service performance of reinforced concrete structures. To investigate the influence of fatigue damage on chloride ion diffusion, this paper simulated the damage degradation process of structures under fatigue load and chloride ion erosion through experiments. The damage caused by fatigue load was defined by ultrasonic method, and the study investigated the effects of different stress levels and loading cycles on chloride ion transport. The chloride ion diffusion concentration under different damage conditions was predicted by numerical simulation. The results indicate that the fatigue load leads to the increase of load level and the increase of chloride ion content at the same depth. The increase of loading times accelerates the penetration rate, which is positively correlated with the chloride ion diffusivity. The chloride ion diffusion coefficient of concrete exhibits an exponential relationship with fatigue damage levels. The numerical simulation results are consistent with the experimental results, validating the feasibility of establishing a correspondence between thermodynamic diffusion and chloride ion diffusion parameters using the analogy method. 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