2026-04-18T02:54:11Zhttps://riubu.ubu.es/oai/request

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

00925njm 22002777a 4500 dc Ríos, José D. author Mínguez Algarra, Jesús author Martínez de la Concha, Antonio author Vicente Cabrera, Miguel Ángel author Cifuentes, Héctor author 2020-11 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. 0950-0618 http://hdl.handle.net/10259/10127 10.1016/j.conbuildmat.2020.120499 High-strength concrete Polypropylene Fracture mechanic X-ray computed tomography Microstructure Microstructural analyses of the addition of PP fibres on the fracture properties of high-strength self-compacting concrete by X-ray computed tomography