Effect of Calcium Ion Concentration in Wastewater on Failure Behavior of Mine Waste Backfill Material

Effect of Calcium Ion Concentration in Wastewater on Failure Behavior of Mine Waste Backfill Material | 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 Effect of Calcium Ion Concentration in Wastewater on Failure Behavior of Mine Waste Backfill Material Chunlei Guo, Shan Ning, Jiangshuai Cheng, Zhu Li, Jingmin Xu, and 1 more This is a preprint; it has not been peer reviewed by a journal.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-8274617/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 4 You are reading this latest preprint version Abstract The arid western region, characterized by minimal rainfall and limited water resources, is further burdened by the accumulation of solid waste and high-calcium wastewater, a byproduct of mineral resource extraction and industrial activity. In the hope of safeguarding water resources and realizing comprehensive treatment of solid waste and high-calcium wastewater, laboratory simulation was conducted in this study. To be specific, mechanical testing and microanalysis were performed on samples with the aid of a universal testing machine, an acoustic emission monitoring system, a scanning electron microscope, and an X-ray diffractometer. On this basis, a novel method of enhancing the solid waste-based paste filling materials (SWBPFMs) with high-calcium wastewater was proposed. The following findings were obtained. High-calcium wastewater serves to facilitate the production of Friedel’s salt within SWBPFMs, and Friedel’s salt acts to enhance the microstructure of SWBPFMs by reducing their porosity, thereby improving their performance. Besides, Friedel’s salt exhibits the most substantial reinforcing effect on SWBPFMs (increase their strength by approximately 8.56 times) under a mass concentration of 78%, a gangue dosage of 58%, a cement dosage of 10%, a fly ash dosage of 10%, and a Ca 2+ concentration of about 29.3%. The proposed method not only offers a viable solution for the transformation of solid waste and wastewater but also addresses the industrial water shortage in the western region. It paves the way for the recycling of waste resources and promotes sustainable development. arid areas high-calcium wastewater solid waste paste filling materials Full Text Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 26 Jan, 2026 Reviewers invited by journal 06 Jan, 2026 Editor assigned by journal 05 Dec, 2025 First submitted to journal 03 Dec, 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. 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-8274617","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":570429456,"identity":"d0a0759b-4954-40a9-89a7-e080aacb3310","order_by":0,"name":"Chunlei Guo","email":"","orcid":"","institution":"China University of Mining and Technology - Xuzhou Campus: China University of Mining and Technology","correspondingAuthor":false,"prefix":"","firstName":"Chunlei","middleName":"","lastName":"Guo","suffix":""},{"id":570429457,"identity":"4583a27c-5ac0-4aa4-a5bb-85c88a0ea094","order_by":1,"name":"Shan 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In the hope of safeguarding water resources and realizing comprehensive treatment of solid waste and high-calcium wastewater, laboratory simulation was conducted in this study. To be specific, mechanical testing and microanalysis were performed on samples with the aid of a universal testing machine, an acoustic emission monitoring system, a scanning electron microscope, and an X-ray diffractometer. On this basis, a novel method of enhancing the solid waste-based paste filling materials (SWBPFMs) with high-calcium wastewater was proposed. The following findings were obtained. High-calcium wastewater serves to facilitate the production of Friedel’s salt within SWBPFMs, and Friedel’s salt acts to enhance the microstructure of SWBPFMs by reducing their porosity, thereby improving their performance. Besides, Friedel’s salt exhibits the most substantial reinforcing effect on SWBPFMs (increase their strength by approximately 8.56 times) under a mass concentration of 78%, a gangue dosage of 58%, a cement dosage of 10%, a fly ash dosage of 10%, and a Ca\u003csup\u003e2+\u003c/sup\u003e concentration of about 29.3%. The proposed method not only offers a viable solution for the transformation of solid waste and wastewater but also addresses the industrial water shortage in the western region. It paves the way for the recycling of waste resources and promotes sustainable development.\u003c/p\u003e","manuscriptTitle":"Effect of Calcium Ion Concentration in Wastewater on Failure Behavior of Mine Waste Backfill Material","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-01-08 10:30:38","doi":"10.21203/rs.3.rs-8274617/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"","date":"2026-01-26T18:30:44+00:00","index":0,"fulltext":""},{"type":"reviewersInvited","content":"","date":"2026-01-06T20:56:13+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-12-05T11:43:45+00:00","index":"","fulltext":""},{"type":"submitted","content":"Mine Water and the Environment","date":"2025-12-03T21:31:54+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"mine-water-and-the-environment","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"mwen","sideBox":"Learn more about [Mine Water and the Environment](http://link.springer.com/journal/10230)","snPcode":"10230","submissionUrl":"https://www.editorialmanager.com/mwen/default2.aspx","title":"Mine Water and the Environment","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"ca97b8c7-c34f-4de6-bbf0-650761e04bb9","owner":[],"postedDate":"January 8th, 2026","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2026-04-07T07:26:15+00:00","versionOfRecord":[],"versionCreatedAt":"2026-01-08 10:30:38","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-8274617","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-8274617","identity":"rs-8274617","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}