Research on Damage Characterization of Rock-filled Concrete with Defects Using Super Absorbent Polymer

Research on Damage Characterization of Rock-filled Concrete with Defects Using Super Absorbent Polymer | 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 Research on Damage Characterization of Rock-filled Concrete with Defects Using Super Absorbent Polymer Yunke Liu, Guoji Wang, Tao Yang, Haoyang Qiao, Lei Yu, Tao Ren This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5109210/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 20 Nov, 2024 Read the published version in Scientific Reports → Version 1 posted 10 You are reading this latest preprint version Abstract Rock-filled concrete (RFC) construction technology is to construct a force-transferring skeleton with large-size rocks, and to use self-compacting concrete (SCC) as the filling and bonding material, in which the defects with different distributions and sizes contained in SCC are often the key factors determining the mechanical properties and damage behaviors of RFC. In this research, by utilizing the excellent properties of super absorbent polymer (SAP), such as water absorption and expansion and dehydration shrinkage, non-introduction of impurities, and not easy suspension or settlement in concrete, RFC and SCC specimens with different numbers and sizes of defects were precisely prepared and subjected to unconfined uniaxial compression physical tests. The effects of porosity and pore aperture on the compressive strength and damage pattern of the specimens were studied. The mechanical behavior of the defective concrete specimens under compressive loading was analyzed from a microscopic perspective by using a combination of physical tests and numerical simulation using the Realistic Failure Process Analysis (RFPA) method to reveal the internal damage phenomenon and damage destabilization mechanism of RFC and SCC. The results show that: SAP material can accurately construct concrete specimens with stable and uniform defects; under the same porosity and aperture, the compressive strength of RFC is greater than that of SCC; the compressive strength of the specimen decreases linearly with the growth of porosity for the same aperture, the compressive strength of the specimen decreases with the increase of aperture for the same porosity and the trend tends to be flat, and the sensitivity of the compressive strength to porosity is higher than that of aperture. In addition, it was found that the internal penetrating shear damage during the fracturing process of SCC was the core cause of the overall damage. For RFC, the tensile fracture that penetrated through the force transmission skeleton of the stacked rock was the key factor causing the overall instability. Physical sciences/Engineering/Civil engineering Physical sciences/Materials science/Structural materials/Composites rock-filled concrete compressive strength super absorbent polymer defect preparation damage mechanism Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 20 Nov, 2024 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 22 Oct, 2024 Reviews received at journal 18 Oct, 2024 Reviews received at journal 12 Oct, 2024 Reviewers agreed at journal 10 Oct, 2024 Reviewers agreed at journal 08 Oct, 2024 Reviewers invited by journal 08 Oct, 2024 Editor assigned by journal 08 Oct, 2024 Editor invited by journal 04 Oct, 2024 Submission checks completed at journal 03 Oct, 2024 First submitted to journal 18 Sep, 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-5109210","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":368873451,"identity":"81c03c7f-5bfe-42d0-968e-221d642ff048","order_by":0,"name":"Yunke Liu","email":"","orcid":"","institution":"Guizhou University","correspondingAuthor":false,"prefix":"","firstName":"Yunke","middleName":"","lastName":"Liu","suffix":""},{"id":368873452,"identity":"5c21cd42-fd4c-49e6-bf34-f8bd2d7dfe72","order_by":1,"name":"Guoji Wang","email":"","orcid":"","institution":"Guizhou 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