{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T10:18:43Z","timestamp":1785406723842,"version":"3.56.0"},"reference-count":38,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T00:00:00Z","timestamp":1776729600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003140","name":"Consejo de Ciencia y Tecnolog\u00eda del Estado de Tabasco","doi-asserted-by":"publisher","award":["PRODECTI-2022-01\/58"],"award-info":[{"award-number":["PRODECTI-2022-01\/58"]}],"id":[{"id":"10.13039\/501100003140","id-type":"DOI","asserted-by":"publisher"}]},{"award":["PRODECTI-2022-01\/58"],"award-info":[{"award-number":["PRODECTI-2022-01\/58"]}],"id":[{"id":"https:\/\/ror.org\/03f2xnj73","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Secretar\u00eda de Ciencia, Humanidades y Tecnolog\u00eda e Innovaci\u00f3n"},{"id":[{"id":"https:\/\/ror.org\/059ex5q34","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>The cement industry contributes approximately 7\u20138% of global CO2 emissions, motivating the development of sustainable supplementary materials. This study evaluates the partial replacement (10 wt.%) of Portland cement with calcium carbonate (CaCO3) derived from oyster shells, both untreated and thermally treated at 600 \u00b0C, in non-structural mortar blocks. Structural and physicochemical characterization was performed using XRD, SEM, EDS, BET, and TGA to assess phase composition, morphology, and surface properties. Thermal treatment modified the textural characteristics of CaCO3, reducing the crystallite size and increasing the specific surface area (from 5.8 to 25.6 m2\/g), without phase transformation. Compressive strength results, relative to a reference mortar (13.6 MPa), showed comparable performance, with variations generally within \u00b110%, although slightly larger deviations were observed for specific particle sizes. Finer calcined particles yielded the highest strength (15.0 MPa), reinforcing the combined influence of particle size and thermal treatment. These results suggest that CaCO3 acts primarily through a filler effect, improving particle packing and matrix interaction. Both untreated and heat-treated CaCO3 satisfied strength requirements for non-structural applications, supporting the valorization of oyster shell waste as a sustainable material in cement-based systems.<\/jats:p>","DOI":"10.3390\/ma19081656","type":"journal-article","created":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T11:42:45Z","timestamp":1776771765000},"page":"1656","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Influence of Thermal Treatment and Particle Size on the Physicochemical Properties and Filler Performance of Oyster Shell-Derived CaCO3 in Mortar"],"prefix":"10.3390","volume":"19","author":[{"given":"Jessica","family":"de Dios-Su\u00e1rez","sequence":"first","affiliation":[{"name":"Divisi\u00f3n Acad\u00e9mica de Ingenier\u00eda y Arquitectura, Universidad Ju\u00e1rez Aut\u00f3noma de Tabasco, Av. Universidad S\/N, Zona de la Cultura, Col. Magisterial, Villahermosa 86040, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7204-422X","authenticated-orcid":false,"given":"Brayan Leonardo","family":"P\u00e9rez-Escobar","sequence":"additional","affiliation":[{"name":"Divisi\u00f3n Acad\u00e9mica de Ingenier\u00eda y Arquitectura, Universidad Ju\u00e1rez Aut\u00f3noma de Tabasco, Av. Universidad S\/N, Zona de la Cultura, Col. Magisterial, Villahermosa 86040, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Germ\u00e1n","family":"P\u00e9rez-Hern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Divisi\u00f3n Acad\u00e9mica de Ingenier\u00eda y Arquitectura, Universidad Ju\u00e1rez Aut\u00f3noma de Tabasco, Av. Universidad S\/N, Zona de la Cultura, Col. Magisterial, Villahermosa 86040, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2884-5019","authenticated-orcid":false,"given":"Francisco Iv\u00e1n","family":"Lizama-Tzec","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica Aplicada, Centro de Investigaci\u00f3n y de Estudios Avanzados del Instituto Polit\u00e9cnico Nacional, Merida 97310, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laura Lorena","family":"D\u00edaz-Flores","sequence":"additional","affiliation":[{"name":"Divisi\u00f3n Acad\u00e9mica de Ingenier\u00eda y Arquitectura, Universidad Ju\u00e1rez Aut\u00f3noma de Tabasco, Av. Universidad S\/N, Zona de la Cultura, Col. Magisterial, Villahermosa 86040, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Salatiel","family":"P\u00e9rez-Montejo","sequence":"additional","affiliation":[{"name":"Facultad de Ingenier\u00eda, Universidad Aut\u00f3noma del Carmen, Campus III, Av. Central S\/N, Esq. Con Fracc. Mundo Maya, Ciudad del Carmen, Campeche 24115, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan Pablo","family":"de Dios-Jim\u00e9nez","sequence":"additional","affiliation":[{"name":"Divisi\u00f3n Acad\u00e9mica de Ingenier\u00eda y Arquitectura, Universidad Ju\u00e1rez Aut\u00f3noma de Tabasco, Av. Universidad S\/N, Zona de la Cultura, Col. Magisterial, Villahermosa 86040, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5104-2249","authenticated-orcid":false,"given":"Rafael","family":"Torres-Ric\u00e1rdez","sequence":"additional","affiliation":[{"name":"Divisi\u00f3n Acad\u00e9mica de Ingenier\u00eda y Arquitectura, Universidad Ju\u00e1rez Aut\u00f3noma de Tabasco, Av. Universidad S\/N, Zona de la Cultura, Col. Magisterial, Villahermosa 86040, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,4,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bellei, P., Torres, I., Solstad, R., and Flores, C.I. (2023). Potential Use of Oyster Shell Waste in the Composition of Construction Composites: A Review. 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