Influence of fibre orientation on the tensile behaviour of ultra-high performance fibre reinforced cementitious composites

• Type: Article in International Scientific Journal
• Date: 2017-04-01

Authors

Mário Pimentel (Author) FEUP; Amin Abrishambaf (Author) FEUP; Sandra Nunes (Author) FEUP

Journal

Title: Cement and Concrete Research

Vol. 97

Pages: 28-40

ISSN: 0008-8846

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 37 Citations

ISI Web of Science

Scopus - 71 Citations

Scientific classification

CORDIS: Technological sciences > Engineering > Civil engineering > Concrete engineering ; Technological sciences > Engineering > Civil engineering > Structural engineering

FOS: Engineering and technology > Civil engineering

Other information

Authenticus ID: P-00M-KKG

DOI: 10.1016/j.cemconres.2017.03.007

Abstract (EN): The main objective of this study is to quantify the effect of fibre orientation on the tensile behaviour of Ultra-High Performance Fibre-Reinforced Cementitious Composites (UHPFRC). A strategy to align the steel fibres within the matrix based on the activation of an external magnetic field while casting is adopted to achieve a wide range of fibre orientation profiles. The uniaxial tensile test is used for determining the tensile stress-elongation curves of 22 specimens and the quantitative evaluation of the fibre density and orientation characteristics is performed resorting to an image analysis technique. Based on the obtained results it was possible to validate an analytical formulation for determining the tensile strength of UHPFRC and to quantify the involved parameters. It is also shown that length of the hardening branch of the tensile stress-elongation curve is also very well correlated with the same parameters used in the determination of the tensile strength.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13