{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T05:18:25Z","timestamp":1788499105957,"version":"build-2803163510"},"reference-count":44,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T00:00:00Z","timestamp":1788307200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"the National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["No.52304198"],"award-info":[{"award-number":["No.52304198"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"award":["No.52304198"],"award-info":[{"award-number":["No.52304198"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002858","name":"China Postdoctoral Science Foundation","doi-asserted-by":"publisher","award":["2026M791916"],"award-info":[{"award-number":["2026M791916"]}],"id":[{"id":"10.13039\/501100002858","id-type":"DOI","asserted-by":"publisher"}]},{"award":["2026M791916"],"award-info":[{"award-number":["2026M791916"]}],"id":[{"id":"https:\/\/ror.org\/0426zh255","id-type":"ROR","asserted-by":"publisher"}]},{"name":"the National Key R&D Program of China","award":["2023YFC3009100"],"award-info":[{"award-number":["2023YFC3009100"]}]},{"name":"the National Key R&D Program of China","award":["2023YFC3009102"],"award-info":[{"award-number":["2023YFC3009102"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Gels"],"abstract":"<jats:p>To elucidate the influence of mineral composition on CO2 mineralization and mechanical reinforcement, three synthetic tailing systems representing felsic, high-calcium silicate, and magnesium-carbonate compositions were prepared using a full-component reconstitution approach. Their carbonation kinetics, phase evolution, pore structure, and mechanical response were systematically investigated. The alkaline buffering duration increased in the order of felsic &lt; high-calcium silicate &lt; magnesium-carbonate types, with plateau durations of approximately 300, 650, and 2000 s, respectively. TG-DTG, XRD, and FTIR analyses collectively indicated composition-dependent formation of carbonate-bearing products, with the magnesium-carbonate type showing the strongest carbonate-related signals. SEM observations further revealed precipitation on particle surfaces and within interparticle regions, suggesting precipitation-induced particle bonding. Nitrogen adsorption\u2013desorption measurements showed pronounced pore-structure reorganization after mineralization; the average pore size converged to approximately 7.5\u20137.9 nm, whereas the specific surface area decreased in all systems. The failure loads of the felsic and high-calcium silicate types increased by factors of 2.97 and 3.81, respectively. The mineralized magnesium-carbonate type exhibited the highest apparent compressive strength (53.69 kPa). These results demonstrate clear composition-dependent relationships among carbonation, pore evolution, and mechanical response in the synthetic systems. Because the materials were prepared from analytical-grade reagents and no complete carbon balance was established, the results should be regarded as mechanistic model-system evidence rather than quantitative estimates of CO2 sequestration in natural tailings.<\/jats:p>","DOI":"10.3390\/gels12090802","type":"journal-article","created":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T10:57:23Z","timestamp":1788346643000},"page":"802","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Effect of Mineral Composition on CO2 Mineralization and Mechanical Strengthening of Synthetic Tailings"],"prefix":"10.3390","volume":"12","author":[{"given":"Wei","family":"Lu","sequence":"first","affiliation":[{"name":"State Key Laboratory for Safe Mining of Deep Coal Resources and Environment Protection, Anhui University of Science and Technology, Huainan 232000, China"},{"name":"School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan 232000, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Shaoping","family":"Ren","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Safe Mining of Deep Coal Resources and Environment Protection, Anhui University of Science and Technology, Huainan 232000, China"},{"name":"School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan 232000, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"writing-original-draft","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0015-6796","authenticated-orcid":false,"given":"Yao","family":"Lu","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Safe Mining of Deep Coal Resources and Environment Protection, Anhui University of Science and Technology, Huainan 232000, China"},{"name":"School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan 232000, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"methodology","vocabulary":"credit"}]},{"given":"Zhi","family":"Guo","sequence":"additional","affiliation":[{"name":"School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan 232000, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"formal-analysis","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4202-7231","authenticated-orcid":false,"given":"Changxiang","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Safe Mining of Deep Coal Resources and Environment Protection, Anhui University of Science and Technology, Huainan 232000, China"},{"name":"School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan 232000, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"supervision","vocabulary":"credit"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,2]]},"reference":[{"key":"ref_1","first-page":"34","article-title":"Present situation and suggestions of tailings solid waste disposal in China","volume":"51","author":"Wei","year":"2022","journal-title":"Chem. 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