{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T20:14:41Z","timestamp":1790453681549,"version":"4.1.0"},"reference-count":55,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2026,5,25]],"date-time":"2026-05-25T00:00:00Z","timestamp":1779667200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002923","name":"CONICET","doi-asserted-by":"crossref","award":["23120180100014CO"],"award-info":[{"award-number":["23120180100014CO"]}],"id":[{"id":"10.13039\/501100002923","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100007482","name":"Universidad Nacional de Tucum\u00e1n","doi-asserted-by":"crossref","award":["PIUNT E754"],"award-info":[{"award-number":["PIUNT E754"]}],"id":[{"id":"10.13039\/501100007482","id-type":"DOI","asserted-by":"crossref"}]},{"award":["PIUNT E754"],"award-info":[{"award-number":["PIUNT E754"]}],"id":[{"id":"https:\/\/ror.org\/04chzd762","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Universidad de Buenos Aires, Argentina","award":["UBACYT 20020220100185BA"],"award-info":[{"award-number":["UBACYT 20020220100185BA"]}]},{"award":["UBACYT 20020220100185BA"],"award-info":[{"award-number":["UBACYT 20020220100185BA"]}],"id":[{"id":"https:\/\/ror.org\/0081fs513","id-type":"ROR","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100005740","name":"Universidad Nacional del Sur","doi-asserted-by":"crossref","award":["PGI 24J093"],"award-info":[{"award-number":["PGI 24J093"]}],"id":[{"id":"10.13039\/501100005740","id-type":"DOI","asserted-by":"crossref"}]},{"award":["PGI 24J093"],"award-info":[{"award-number":["PGI 24J093"]}],"id":[{"id":"https:\/\/ror.org\/028crwz56","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Despite the low thermal conductivity that characterizes the mechanical behavior of cementitious composites like concrete, high temperatures acting for long periods could have devastating effects on the overall integrity and stability of structures. Such damage encompasses not only the structural but also the material level, manifested as a degradation of the strength and stiffness properties together with increasing porosity and the consequent cohesion loss. Adding fibers to the cementitious matrix is a strategy that increases the fire resistance of structures, improving the fracture energy release capacity beyond the peak strength. This fact has been experimentally demonstrated in numerous publications and requires the development of advanced computational constitutive models with the aim of predicting the evolution of both elastic properties and failure behavior in fiber-reinforced concrete. In this work, a temperature-dependent, thermodynamically consistent microplane material model based on the smeared crack approach is developed to simulate the mechanical behavior of preheated steel fiber-reinforced concrete (SFRC) under residual conditions. The influence of high temperatures on the material response is evaluated in terms of stress versus crack opening displacement or crack slip curves, whereas the failure analysis in the form of discontinuous bifurcation is addressed by means of numerical analysis of the acoustic tensor, identifying the critical orientation for varying temperature levels, material properties and boundary conditions.<\/jats:p>","DOI":"10.3390\/ma19112229","type":"journal-article","created":{"date-parts":[[2026,5,25]],"date-time":"2026-05-25T14:10:22Z","timestamp":1779718222000},"page":"2229","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A Microplane Constitutive Model for SFRC Subjected to High Temperatures"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9088-6030","authenticated-orcid":false,"given":"Marianela","family":"Ripani","sequence":"first","affiliation":[{"name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas (CONICET), Buenos Aires C1425FQB, Argentina"},{"name":"Departamento de Ingenier\u00eda, Universidad Nacional del Sur, Bah\u00eda Blanca, Buenos Aires 8000, Argentina"},{"name":"Laboratorio de M\u00e9todos Num\u00e9ricos en Ingenier\u00eda (LMNI), Facultad de Ingenier\u00eda, Universidad de Buenos Aires, Buenos Aires C1127AAR, Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5039-754X","authenticated-orcid":false,"given":"Sonia","family":"Vrech","sequence":"additional","affiliation":[{"name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas (CONICET), Buenos Aires C1425FQB, Argentina"},{"name":"Centro de M\u00e9todos Num\u00e9ricos y Computacionales en Ingenier\u00eda (CEMNCI), Facultad de Ciencias Exactas e Ingenier\u00eda, Universidad Nacional de Tucum\u00e1n, Tucum\u00e1n T4000BMD, Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1027-2520","authenticated-orcid":false,"given":"Antonio","family":"Caggiano","sequence":"additional","affiliation":[{"name":"Dipartimento di Ingegneria Civile (DICCA), Chimica e Ambientale, Universit\u00e0 degli Studi di Genova, 16145 Genova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5508-0755","authenticated-orcid":false,"given":"Paula","family":"Folino","sequence":"additional","affiliation":[{"name":"Laboratorio de M\u00e9todos Num\u00e9ricos en Ingenier\u00eda (LMNI), Facultad de Ingenier\u00eda, Universidad de Buenos Aires, Buenos Aires C1127AAR, Argentina"},{"name":"Instituto de Tecnolog\u00edas y Ciencias de la Ingenier\u00eda Hilario Fern\u00e1ndez Long (INTECIN), Universidad de Buenos Aires and Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas, Buenos Aires C1063ACV, Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"429","DOI":"10.1002\/pse.51","article-title":"Effect of fire on concrete and concrete structures","volume":"2","author":"Khoury","year":"2000","journal-title":"Prog. 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