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Evaluation of Fiber Orientation in UHPC Members Using X-ray Micro-CT and Estimation of Member Strength

  • 2024
  • OriginalPaper
  • Chapter
Published in:
Authors
Jun-ichi Okunishi
Yuichi Uchida
Hiroshi Inaguma
Akira Tanaka
Published in
Transforming Construction: Advances in Fiber Reinforced Concrete
Publisher
Springer Nature Switzerland

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Abstract

The chapter focuses on the evaluation of fiber orientation in Ultra-High-Performance Concrete (UHPC) members using X-ray micro-CT, a cutting-edge imaging technique. The study aims to understand the influence of fiber orientation on the strength of UHPC members, particularly in the context of flexural capacity. The authors conducted nonlinear finite element method (FEM) analysis to examine the relationship between flexural strength and tension-softening curves, which were estimated from fiber observation data. The research involved creating UHPC beam specimens with axial rebars and conducting four-point bending tests to measure load and displacement. Notably, the study compares the results of loading tests with those from nonlinear FEM analysis, both with and without tension-softening curves, to provide a comprehensive understanding of the factors affecting the flexural capacity of UHPC members. The chapter also highlights the potential of X-ray micro-CT in estimating tension-softening curves and its implications for the design and analysis of UHPC structures.
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previous chapter Polydopamine and Chitosan as Bio-Inspired Adhesion Promoters in Fiber-Reinforced Cement Composites
next chapter Study of the Edge Effect in Fiber-Reinforced Concrete Cylindrical Molded Specimens Using Computed Tomography
Title
Evaluation of Fiber Orientation in UHPC Members Using X-ray Micro-CT and Estimation of Member Strength
Authors
Jun-ichi Okunishi
Yuichi Uchida
Hiroshi Inaguma
Akira Tanaka
Copyright Year
2024
Book
Transforming Construction: Advances in Fiber Reinforced Concrete

Print ISBN: 978-3-031-70144-3

Electronic ISBN: 978-3-031-70145-0

Copyright Year: 2024

DOI
https://doi.org/10.1007/978-3-031-70145-0_3
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