2026-04-17T20:48:05Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/101272025-02-01T01:05:38Zcom_10259_4809com_10259_5086com_10259_2604col_10259_4810

Microstructural analyses of the addition of PP fibres on the fracture properties of high-strength self-compacting concrete by X-ray computed tomography Ríos, José D. Mínguez Algarra, Jesús Martínez de la Concha, Antonio Vicente Cabrera, Miguel Ángel Cifuentes, Héctor High-strength concrete Polypropylene Fracture mechanic X-ray computed tomography Microstructure Materiales de construcción Resistencia de materiales Building materials Strength of materials This paper analyses the influence of the presence of polypropylene fibres in the microstructure of a high-strength self-compacting concrete by X-ray computed tomography and its consequences on the mechanical and fracture properties. The addition of PP fibres alters the pore structure of the concrete matrix, and this affects the macroscopic response (i.e., mechanical and fracture behaviour). A microstructural analysis of an unreinforced concrete, used as reference mix, and two polypropylene fibre-reinforced mixes with two fibre length (6 and 24 mm) were experimentally carried out. Complementary, a comprehensive experimental study of the mechanical and fracture properties of each concrete were performed. Finally, it was established a correlation between the microscopic response (pore morphology and pore distribution) and the macroscopic behaviour of high-strength self-compacting concrete. os autores desean agradecer el apoyo financiero brindado a este estudio por el Ministerio de Economía y Competitividad de España bajo los proyectos BIA2016-75431-R, PID2019-110928RB-C32, PID2019-110928RB-C33 y el VI Plan Propio de Investigación de la Universidad de Sevilla. 2025-01-31T12:39:01Z 2025-01-31T12:39:01Z 2020-11 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 0950-0618 http://hdl.handle.net/10259/10127 10.1016/j.conbuildmat.2020.120499 eng Construction and Building Materials. 2020, V. 261, 120499 https://doi.org/10.1016/j.conbuildmat.2020.120499 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess application/pdf Elsevier