Ultra High Performance Fibre Reinforced Concrete

A special issue of Fibers (ISSN 2079-6439).

Deadline for manuscript submissions: closed (15 January 2019) | Viewed by 8200

Special Issue Editor


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Guest Editor
Department of Architectural Engineering, Hanyang University, Seoul 04763, Republic of Korea
Interests: high-impact-resistant and energy-absorbent ultra-high-performance concrete (UHPC); self-sensing cement-based materials; analytical tools for post-cracking tensile behavior of UHPC based on micromechanics and fracture mechanics; strainrate effect; low-cost UHPC with hybrid reinforcing methods using micro- and macrofibers
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Special Issue Information

Dear Colleagues,

In the mid-1990s, reactive powder concrete, which is a precursor of ultra-high-performance fiber-reinforced concrete (UHFFRC), currently available in several countries, was first introduced by French engineers in order to overcome several drawbacks of ordinary concrete, including a low strength-to-weight ratio, high brittleness, and low durability. Based on packing density theory, a very compact mixture was successfully developed, exhibiting a compressive strength over 150 MPa and excellent resistance to permeation of water and gas, enhancing durability significantly. By including high volume contents of fibres, mostly steel fibres, a ductile tensile strain-hardening or deflection-hardening behaviour could also be achieved, leading to very high tensile strength greater than about 8 MPa. Due to its superior mechanical properties and durability, numerous scientists and engineers have conducted various experimental and numerical studies at both the material and structural levels intensively, and this special and novel construction material, called UHPFRC, has been used practically in architectural buildings and civil infrastructure worldwide.

This Special Issue aims to provide a comprehensive overview on the special construction material, UHPFRC, including all aspects related to mechanical properties, durability, bond behaviour, fire resistance, fibre orientation and dispersion, numerical simulation, and structural implications under various loading conditions, such as quasi-static, seismic, impact, and blast. Authoritative review articles and original research papers describing recent findings relevant to material properties and structural implications of UHPFRC for civil and architectural engineering applications are all welcomed.

Assist. Prof. Dr. Doo-Yeol Yoo
Guest Editor

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Keywords

  • Ultra-high-performance fibre-reinforced concrete
  • Mechanical property
  • Durability
  • Fibre hybridization
  • Fire resistance
  • Bond behaviour
  • Strain-rate effect
  • Fibre dispersion and orientation
  • Volume stability
  • Structural behaviour
  • Strenghening application

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Published Papers (1 paper)

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Research

20 pages, 6376 KiB  
Article
Influence of Fiber Volume Fraction and Fiber Orientation on the Uniaxial Tensile Behavior of Rebar-Reinforced Ultra-High Performance Concrete
by Manish Roy, Corey Hollmann and Kay Wille
Fibers 2019, 7(7), 67; https://doi.org/10.3390/fib7070067 - 23 Jul 2019
Cited by 28 | Viewed by 7417
Abstract
This paper studied the influence of fiber volume fraction ( V f ), fiber orientation, and type of reinforcement bar (rebar) on the uniaxial tensile behavior of rebar-reinforced strain-hardening ultra-high performance concrete (UHPC). It was observed that the tensile strength increased with the [...] Read more.
This paper studied the influence of fiber volume fraction ( V f ), fiber orientation, and type of reinforcement bar (rebar) on the uniaxial tensile behavior of rebar-reinforced strain-hardening ultra-high performance concrete (UHPC). It was observed that the tensile strength increased with the increase in V f . When V f was kept constant at 1%, rebar-reinforced UHPC with fibers aligned with the load direction registered the highest strength and that with fibers oriented perpendicular to the load direction recorded the lowest strength. The strength of the composite with random fibers laid in between. Moreover, the strength, as well as the ductility, increased when the normal strength grade 60 rebars embedded in UHPC were replaced with high strength grade 100 rebars with all other conditions remaining unchanged. In addition, this paper discusses the potential of sudden failure of rebar-reinforced strain hardening UHPC and it is suggested that the composite attains a minimum strain of 1% at the peak stress to enable the members to have sufficient ductility. Full article
(This article belongs to the Special Issue Ultra High Performance Fibre Reinforced Concrete)
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