Improving Mechanical Performance and Frost-Thermal Durability of Basalt Fiber Shotcrete in Extreme High-and-Low Temperature Environments

Improving Mechanical Performance and Frost-Thermal Durability of Basalt Fiber Shotcrete in Extreme High-and-Low Temperature Environments | 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 Improving Mechanical Performance and Frost-Thermal Durability of Basalt Fiber Shotcrete in Extreme High-and-Low Temperature Environments Liangliang Li, Xiaohui Wang, Renzhi Wang, Zhijun Zhao, Zhijun Li, and 6 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7815810/v1 This work is licensed under a CC BY 4.0 License Status: Under Revision Version 1 posted 12 You are reading this latest preprint version Abstract The mechanical properties of basalt fiber (BF) shotcrete at high-frigid condition and high temperature environment are comprehensively studied. The test specimens are prepared at different ambient temperatures, fiber contents and curing time, and the cubic compressive strength, splitting tensile strength and flexural strength parameters are analyzed to figure out effects of BF. The frost resistance and thermal conductivity of BF shotcrete are further studied and evaluated, and compared with steel fiber (SF) and BF with different fiber lengths. The results showed that: (1) The addition of BF can significantly improve the compressive strength of shotcrete in the high-frigid condition and high temperature, and the more extreme the environment is, the more obvious the improvement is. (2) The addition of BF can greatly improve the splitting tensile strength of shotcrete in high-frigid condition. In the high temperature environment, whether it is 7d or 14d, its strength value is higher than that of shotcrete, and the peak of strength is reached at 40 ℃. (3) The BF can obviously improve the flexural strength in high-frigid condition, and its flexural strength is far superior to that of shotcrete without BF. In the later stage of curing, BF has a great improvement in the strength of shotcrete. (4) After 100 freeze-thaw cycles, the compressive strength, splitting tensile strength and relative dynamic elastic modulus of shotcrete decrease in different proportions. The strength of BF with a fiber length of 16 mm (BF16) is the highest, and the performance of plain concrete (PC) is the worst. Relatively speaking, the performances of PC and BF50 shotcrete are extremely poor, and the strength loss rate after freeze-thaw cycles is large. SF can relatively improve the decrease of the dynamic elastic modulus of shotcrete, but the effect is not as good as BF, of which BF16 has the most significant effect. (5) The addition of BF can effectively reduce the thermal conductivity of concrete, especially when the length of fiber is 16 mm, the reduction is the largest, that is, the concrete has better resistance to heat. Physical sciences/Engineering Physical sciences/Materials science Basalt fiber shotcrete high-frigid condition high temperature environment mechanical properties frost resistance thermal conductivity Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Revision Version 1 posted Editorial decision: Revision requested 23 Dec, 2025 Reviews received at journal 22 Dec, 2025 Reviews received at journal 18 Dec, 2025 Reviewers agreed at journal 23 Nov, 2025 Reviewers agreed at journal 21 Nov, 2025 Reviewers agreed at journal 03 Nov, 2025 Reviewers agreed at journal 21 Oct, 2025 Reviewers invited by journal 15 Oct, 2025 Editor assigned by journal 15 Oct, 2025 Editor invited by journal 15 Oct, 2025 Submission checks completed at journal 13 Oct, 2025 First submitted to journal 13 Oct, 2025 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-7815810","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":534984695,"identity":"f34bef4c-2faa-4989-bfe8-c41aaac40d57","order_by":0,"name":"Liangliang Li","email":"","orcid":"","institution":"Erchu Co., Ltd. of China Railway Tunnel Group, Langfang 065201, China","correspondingAuthor":false,"prefix":"","firstName":"Liangliang","middleName":"","lastName":"Li","suffix":""},{"id":534984696,"identity":"14dad053-276d-4f9d-a038-c17827801536","order_by":1,"name":"Xiaohui Wang","email":"","orcid":"","institution":"Xi'an-chengdu Passenger 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high-frigid condition, high temperature environment, mechanical properties, frost resistance, thermal conductivity","lastPublishedDoi":"10.21203/rs.3.rs-7815810/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7815810/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe mechanical properties of basalt fiber (BF) shotcrete at high-frigid condition and high temperature environment are comprehensively studied. The test specimens are prepared at different ambient temperatures, fiber contents and curing time, and the cubic compressive strength, splitting tensile strength and flexural strength parameters are analyzed to figure out effects of BF. The frost resistance and thermal conductivity of BF shotcrete are further studied and evaluated, and compared with steel fiber (SF) and BF with different fiber lengths. The results showed that: (1) The addition of BF can significantly improve the compressive strength of shotcrete in the high-frigid condition and high temperature, and the more extreme the environment is, the more obvious the improvement is. (2) The addition of BF can greatly improve the splitting tensile strength of shotcrete in high-frigid condition. In the high temperature environment, whether it is 7d or 14d, its strength value is higher than that of shotcrete, and the peak of strength is reached at 40 ℃. (3) The BF can obviously improve the flexural strength in high-frigid condition, and its flexural strength is far superior to that of shotcrete without BF. In the later stage of curing, BF has a great improvement in the strength of shotcrete. (4) After 100 freeze-thaw cycles, the compressive strength, splitting tensile strength and relative dynamic elastic modulus of shotcrete decrease in different proportions. The strength of BF with a fiber length of 16 mm (BF16) is the highest, and the performance of plain concrete (PC) is the worst. Relatively speaking, the performances of PC and BF50 shotcrete are extremely poor, and the strength loss rate after freeze-thaw cycles is large. SF can relatively improve the decrease of the dynamic elastic modulus of shotcrete, but the effect is not as good as BF, of which BF16 has the most significant effect. (5) The addition of BF can effectively reduce the thermal conductivity of concrete, especially when the length of fiber is 16 mm, the reduction is the largest, that is, the concrete has better resistance to heat.\u003c/p\u003e","manuscriptTitle":"Improving Mechanical Performance and Frost-Thermal Durability of Basalt Fiber Shotcrete in Extreme High-and-Low Temperature Environments","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-10-29 18:40:51","doi":"10.21203/rs.3.rs-7815810/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2025-12-23T07:47:37+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-12-22T09:54:14+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-12-18T07:36:13+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"20452501141743878574372690331946967040","date":"2025-11-24T01:31:09+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"29821148813457742961869141700496752638","date":"2025-11-21T05:13:27+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"315990773010670961251842074969568846757","date":"2025-11-03T05:17:46+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"246030881731214478443009792548009464372","date":"2025-10-21T22:52:13+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-10-16T01:12:04+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-10-16T01:07:36+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2025-10-15T10:16:17+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2025-10-13T12:25:36+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2025-10-13T12:19:37+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":"fe74017b-1508-4bfc-8677-de0182f75f36","owner":[],"postedDate":"October 29th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"in-revision","subjectAreas":[{"id":56878977,"name":"Physical sciences/Engineering"},{"id":56878978,"name":"Physical sciences/Materials science"}],"tags":[],"updatedAt":"2026-05-25T12:08:36+00:00","versionOfRecord":[],"versionCreatedAt":"2025-10-29 18:40:51","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7815810","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7815810","identity":"rs-7815810","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}