2026-10-21T19:30:13Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/100842025-01-30T01:05:38Zcom_10259_4809com_10259_5086com_10259_2604col_10259_4810

Mínguez Algarra, Jesús Vicente Cabrera, Miguel Ángel González Cabrera, Dorys Carmen 2025-01-29T16:34:40Z 2025-01-29T16:34:40Z 2019-02 0950-0618 http://hdl.handle.net/10259/10084 10.1016/j.conbuildmat.2018.12.010 Pore morphology and its changes at an early age in two different mortar mixtures are analyzed by means of a CT-Scan and DIP software. Both mixtures share the same cement paste composition. The only difference between them is the inclusion of 0.1% by volume of steel fibers in one paste and its omission from the other paste. A total of six specimen cylinders measuring 45.2 mm in diameter and 50 mm in height were cast. All the specimens were held in a controlled atmosphere at 20 °C and at 60% humidity, reflecting natural ambient curing conditions. Each specimen was scanned at 1, 2, 3, 4, and 7 days using a micro CT-Scan. The data were analyzed using a Digital Image Processing (DIP) software and some post-processing subroutines. Each individual void was identified and isolated and all its geometrical parameters were measured. Among the most interesting and relevant findings was that the presence of fibers substantially modified the pore morphology, increasing the volume of voids, and the pore-size, and reducing the shape factor of the voids, among other effects. Both mixtures showed different pore morphologies at the beginning of the curing process that metamorphosed into different and even divergent geometrical dimensions. The authors are grateful for the financial support from the Ministerio de Economía y Competitividad, BIA2015-68678-C2-R, Spain. application/pdf eng Elsevier Construction and Building Materials. 2019, V. 198, p. 718-731 https://doi.org/10.1016/j.conbuildmat.2018.12.010 info:eu-repo/grantAgreement/MINECO//BIA2015-68678-C2-2-R/ES/DAÑO A FATIGA EN HORMIGON DE ALTAS PRESTACIONES REFORZADO CON FIBRAS: MAPEO Y CUANTIFICACION DEL DAÑO CON TOMOGRAFIA COMPUTERIZADA/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Pore morphology Plain mortar Fiber reinforced mortar CT-Scan technology Resistencia de materiales Materiales de construcción Strength of materials Building materials Pore morphology variation under ambient curing of plain and fiber-reinforced high performance mortar at an early age info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Construction and Building Materials 198 718 731