Study on the bond-slip degradation mechanism of lightweight steel and foam concrete interface under freeze-thaw cycle

Study on the bond-slip degradation mechanism of lightweight steel and foam concrete interface under freeze-thaw cycle | 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 Article Study on the bond-slip degradation mechanism of lightweight steel and foam concrete interface under freeze-thaw cycle Minghao Yang, Hai Yuan, Shuwang Yang, Qiang Xu, Yongbiao Jiang, and 4 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5300587/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 24 May, 2025 Read the published version in Scientific Reports → Version 1 posted 10 You are reading this latest preprint version Abstract In the overall mechanical properties of lightweight steel-foam concrete composite structures, the bonding properties of the interface play a crucial role. However, freeze-thaw cycles significantly affect the pore structure of foam concrete, which has an irreversible impact on the interfacial bonding properties of the composite structure, seriously affecting the overall performance and mechanical properties. Therefore, in this paper, the interfacial bond performance of the composite specimens of foam concrete and cold-formed thin-walled galvanized C-type steel under a freeze-thaw environment is analyzed by using the test method combining microscopic and macroscopic tests. Foam concrete was subjected to 0, 50, 100, and 150 freeze-thaw cycles, and the internal and surface microscopic pore structure of foam concrete was observed and analyzed under different densities and different freeze-thaw cycles using SEM and optical microscope. The test results show that the freeze-thaw cycle makes the pore structure of foam concrete deteriorate obviously, and the degree of pore damage is inversely proportional to the density of foam concrete. The internal porosity of the foam concrete increased with the increase in the number of freezing and thawing. Push-out tests were also conducted on 23 composite specimens. The results show that with the increase in freeze-thaw cycles, the maximum peak bond stress and residual bond stress of foam concrete of the same density decrease, and the slip corresponding to the maximum peak bond stress increases; the strain at the loading end decreases gradually. The maximum peak bond stress, the slip corresponding to the maximum peak bond stress, and the residual bond strength at the same number of freeze-thaw cycles increased with the increase of foam concrete density. For the analysis of bond-slip behavior, a three-stage model of bond-slip considering the change of porosity and compressive strength under ambient temperature environment was established, and the relative bond strength and slip calculation formulas based on the freeze-thaw damage of porosity and initial porosity under freeze-thaw environment were proposed. Physical sciences/Engineering/Civil engineering Physical sciences/Materials science/Structural materials/Composites Earth and environmental sciences/Environmental sciences/Environmental impact Foam concrete and lightweight steel Freezing-and-thawing Pore structure Push-out test Interfacial bond-slip Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 24 May, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 21 Jan, 2025 Reviews received at journal 20 Jan, 2025 Reviewers agreed at journal 05 Jan, 2025 Reviews received at journal 28 Dec, 2024 Reviewers agreed at journal 28 Dec, 2024 Reviewers invited by journal 07 Nov, 2024 Editor assigned by journal 07 Nov, 2024 Editor invited by journal 07 Nov, 2024 Submission checks completed at journal 05 Nov, 2024 First submitted to journal 20 Oct, 2024 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. 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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-5300587","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":377604056,"identity":"9331872e-e652-4c7f-abca-018fbd16eaef","order_by":0,"name":"Minghao Yang","email":"","orcid":"","institution":"Liaocheng University","correspondingAuthor":false,"prefix":"","firstName":"Minghao","middleName":"","lastName":"Yang","suffix":""},{"id":377604057,"identity":"c5b9630d-7f07-4186-8357-79df55496697","order_by":1,"name":"Hai Yuan","email":"","orcid":"","institution":"China Railway 18th Bureau Group Municipal Engineering Co., 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However, freeze-thaw cycles significantly affect the pore structure of foam concrete, which has an irreversible impact on the interfacial bonding properties of the composite structure, seriously affecting the overall performance and mechanical properties. Therefore, in this paper, the interfacial bond performance of the composite specimens of foam concrete and cold-formed thin-walled galvanized C-type steel under a freeze-thaw environment is analyzed by using the test method combining microscopic and macroscopic tests. Foam concrete was subjected to 0, 50, 100, and 150 freeze-thaw cycles, and the internal and surface microscopic pore structure of foam concrete was observed and analyzed under different densities and different freeze-thaw cycles using SEM and optical microscope. The test results show that the freeze-thaw cycle makes the pore structure of foam concrete deteriorate obviously, and the degree of pore damage is inversely proportional to the density of foam concrete. The internal porosity of the foam concrete increased with the increase in the number of freezing and thawing. Push-out tests were also conducted on 23 composite specimens. The results show that with the increase in freeze-thaw cycles, the maximum peak bond stress and residual bond stress of foam concrete of the same density decrease, and the slip corresponding to the maximum peak bond stress increases; the strain at the loading end decreases gradually. The maximum peak bond stress, the slip corresponding to the maximum peak bond stress, and the residual bond strength at the same number of freeze-thaw cycles increased with the increase of foam concrete density. For the analysis of bond-slip behavior, a three-stage model of bond-slip considering the change of porosity and compressive strength under ambient temperature environment was established, and the relative bond strength and slip calculation formulas based on the freeze-thaw damage of porosity and initial porosity under freeze-thaw environment were proposed.\u003c/p\u003e","manuscriptTitle":"Study on the bond-slip degradation mechanism of lightweight steel and foam concrete interface under freeze-thaw cycle","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-11-19 08:00:31","doi":"10.21203/rs.3.rs-5300587/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2025-01-21T09:54:50+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-01-20T22:13:32+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"100101177424287593748280098740320171539","date":"2025-01-05T07:59:54+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-12-28T13:16:10+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"267714572383847051419406763212193315316","date":"2024-12-28T08:23:48+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2024-11-07T10:03:36+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2024-11-07T09:59:04+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2024-11-07T09:45:55+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2024-11-05T11:01:14+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2024-10-21T02:34:14+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"b10f89b5-6f4e-465e-a52a-b622548ce251","owner":[],"postedDate":"November 19th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[{"id":40201841,"name":"Physical sciences/Engineering/Civil engineering"},{"id":40201842,"name":"Physical sciences/Materials science/Structural materials/Composites"},{"id":40201843,"name":"Earth and environmental sciences/Environmental sciences/Environmental impact"}],"tags":[],"updatedAt":"2025-05-26T16:00:28+00:00","versionOfRecord":{"articleIdentity":"rs-5300587","link":"https://doi.org/10.1038/s41598-025-03366-0","journal":{"identity":"scientific-reports","isVorOnly":false,"title":"Scientific Reports"},"publishedOn":"2025-05-24 15:57:20","publishedOnDateReadable":"May 24th, 2025"},"versionCreatedAt":"2024-11-19 08:00:31","video":"","vorDoi":"10.1038/s41598-025-03366-0","vorDoiUrl":"https://doi.org/10.1038/s41598-025-03366-0","workflowStages":[]},"version":"v1","identity":"rs-5300587","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-5300587","identity":"rs-5300587","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}