Effectiveness and Efficiency of Fiber Reinforcement in Ultra-High Performance Concrete

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

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 4571

Special Issue Editor

Civil & Environmental Engineering Department, University of Connecticut, 261 Glenbrook Road Unit 3037, Storrs, CT 06269-3037, USA
Interests: ultra-high performance concrete (UHPC); durability performance of concrete materials; high strain rate and impact resistance of cementitious materials; concrete exposed to high temperature; sustainable concrete pavement systems

Special Issue Information

Dear Colleagues,

One of the most influential innovations in the field of construction materials has been the development of ultra-high performance concrete (UHPC). In general, it is understood that UHPC has a specific compressive strength above 150 MPa and durability properties that can outperform conventional concrete by several orders of magnitude. The key property is a high particle packing density achieved by the addition of fine pozzolanic materials, optimization of particle size distribution, and the use of tailored high-range water reducers. Due to the enhanced homogeneity and high particle packing density, the material fails in an explosive manner. The addition of discontinuous fiber reinforcement allows for a ductile failure of this composite. Over the last two decades, research has been carried out to tailor and optimize fiber reinforcement to achieve sufficient ductility while keeping the necessary workability.

For this Special Issue, I invite you to share your research and innovations regarding the effectiveness and efficiency of fiber reinforcement in ultra-high performance concrete. Topics of interest could include new fiber materials, fiber matrix interaction, mechanical performance under static or high-strain rate loading, innovations in fiber orientation, combined effect of discontinued fiber reinforcement and continuous reinforcement, fiber-reinforcement-dependent durability performance, and efficiency of fiber reinforcement in small- and large-scale elements.

Dr. Kay Wille
Guest Editor

Manuscript Submission Information

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Keywords

  • Ultra-high performance concrete (UHPC)
  • Fiber reinforcement
  • Effectiveness
  • Efficiency
  • Mechanical performance and testing
  • Durability performance

Published Papers (1 paper)

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Research

14 pages, 1642 KiB  
Article
Experimental Tests and Reliability Analysis of the Cracking Impact Resistance of UHPFRC
by Hussain A. Jabir, Sallal R. Abid, Gunasekaran Murali, Sajjad H. Ali, Sergey Klyuev, Roman Fediuk, Nikolai Vatin, Vladimir Promakhov and Yuriy Vasilev
Fibers 2020, 8(12), 74; https://doi.org/10.3390/fib8120074 - 04 Dec 2020
Cited by 67 | Viewed by 3720
Abstract
Ultra-high performance (UHP) concrete is a special type of fibrous cementitious composite that is characterized by high strength and superior ductility, toughness, and durability. This research aimed to investigate the resistance of ultra-high performance fiber-reinforced concrete (UHPFRC) against repeated impacts. An adjusted repeated [...] Read more.
Ultra-high performance (UHP) concrete is a special type of fibrous cementitious composite that is characterized by high strength and superior ductility, toughness, and durability. This research aimed to investigate the resistance of ultra-high performance fiber-reinforced concrete (UHPFRC) against repeated impacts. An adjusted repeated drop mass impact test was adopted to evaluate the impact performance of 72 UHPFRC disc specimens. The specimens were divided into six mixtures each of 12 discs. The only difference between the mixtures was the types of fibers used, while all other mixture components were the same. Three types of fibers were used: 6 mm micro-steel, 15 mm micro-steel, and polypropylene. All mixtures included 2.5% volumetric content of fibers, however with different combinations of the three fiber types. The test results showed that the mixtures with the 15 mm micro-steel fiber absorbed a higher number of impact blows until cracking compared to other mixtures. The mixture with pure 2.5% of 15 mm micro-steel fiber exhibited the highest impact resistance, with percentage increases over the other mixtures ranging from 25 to 140%. In addition, the Weibull distribution was used to investigate the cracking impact resistance of UHP at different levels of reliability. Full article
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