Performance evaluation of Cement Fly-ash Gravel piles of recycled construction and demolition waste aggregates under erosion conditions

Performance evaluation of Cement Fly-ash Gravel piles of recycled construction and demolition waste aggregates under erosion conditions | 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 Performance evaluation of Cement Fly-ash Gravel piles of recycled construction and demolition waste aggregates under erosion conditions Shiping Zhang, Xiaolu Yu, Junhui Zhang, Jinxing Shi, Zhan Xu, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4340077/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 Construction and demolition waste (C&DW) has been mainly used in the field of building materials and road engineering, but relatively few applications in soft soil foundation treatment. This study was aimed to the performance evaluation of the Cement Fly-ash Gravel (CFG) piles using recycled C&DW aggregates in soft ground foundations in inland saline areas, in coasts with high water content and rich in a large number of erosive salt ions. In this paper, erosion experiment simulation conditions were set, the test object was recycled aggregate CFG piles, and the control group was modified aggregate CFG piles and natural aggregate CFG piles under the same conditions. Through the compressive strength test and water absorption test on the pile specimens under different erosion conditions, the changes in the strength and water content of the piles before and after the erosion were obtained. The prediction formulae of water absorption and compressive strength of the piles in the submerged environment and the compressive strength of the piles in the salt-ionized environment were proposed, which reveal the performance deterioration of the recycled aggregate CFG piles. The experimental results showed that the water absorption rate of CFG piles with recycled aggregate under long-term water immersion conditions firstly increased and then tended to stabilize with the immersion time. The change of its compressive strength firstly increased and then declined and finally tended to stabilize. The change of the compressive strength gradually decreased with the salt ion concentration under the salt ion erosion environment. Construction and demolition waste Recycled aggregate CFG pile Salt ion erosion The law of deterioration Estimated formula Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Full Text Additional Declarations No competing interests reported. Tables 1 to 15 are available in the Supplementary Files section 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. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-4340077","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":299172719,"identity":"8d2671bb-7172-4041-b0d9-52003e484d95","order_by":0,"name":"Shiping Zhang","email":"","orcid":"","institution":"Changsha University of Science \u0026 Technology","correspondingAuthor":false,"prefix":"","firstName":"Shiping","middleName":"","lastName":"Zhang","suffix":""},{"id":299172721,"identity":"9cdc0c38-d923-4986-afdc-d12800766e7f","order_by":1,"name":"Xiaolu Yu","email":"","orcid":"","institution":"Changsha University of Science \u0026 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conditions","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"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":"Construction and demolition waste, Recycled aggregate CFG pile, Salt ion erosion, The law of 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This study was aimed to the performance evaluation of the Cement Fly-ash Gravel (CFG) piles using recycled C\u0026amp;DW aggregates in soft ground foundations in inland saline areas, in coasts with high water content and rich in a large number of erosive salt ions. In this paper, erosion experiment simulation conditions were set, the test object was recycled aggregate CFG piles, and the control group was modified aggregate CFG piles and natural aggregate CFG piles under the same conditions. Through the compressive strength test and water absorption test on the pile specimens under different erosion conditions, the changes in the strength and water content of the piles before and after the erosion were obtained. The prediction formulae of water absorption and compressive strength of the piles in the submerged environment and the compressive strength of the piles in the salt-ionized environment were proposed, which reveal the performance deterioration of the recycled aggregate CFG piles. The experimental results showed that the water absorption rate of CFG piles with recycled aggregate under long-term water immersion conditions firstly increased and then tended to stabilize with the immersion time. The change of its compressive strength firstly increased and then declined and finally tended to stabilize. The change of the compressive strength gradually decreased with the salt ion concentration under the salt ion erosion environment.\u003c/p\u003e","manuscriptTitle":"Performance evaluation of Cement Fly-ash Gravel piles of recycled construction and demolition waste aggregates under erosion conditions","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-05-08 15:13:24","doi":"10.21203/rs.3.rs-4340077/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","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}}],"origin":"","ownerIdentity":"b45daca5-9353-4d91-ac94-472cf67bc0a3","owner":[],"postedDate":"May 8th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2024-09-20T05:14:43+00:00","versionOfRecord":[],"versionCreatedAt":"2024-05-08 15:13:24","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-4340077","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4340077","identity":"rs-4340077","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}