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Fibers, Volume 9, Issue 7

2021 July - 7 articles

Cover Story: The effectiveness of externally applied carbon-fiber-reinforced polymer (CFRP) ropes in X-shape formation in the joint area of reinforced concrete (RC) beam–column joint (BCJ) connections is experimentally investigated. Six full-scale exterior RC BCJ subassemblages, three of them strengthened using CFRP ropes, are tested under reverse cyclic deformation. Full hysteretic curves, maximum applied load capacities, damage modes, stiffness, and energy dissipation values per each loading step are presented and compared. Test results indicated that BCJ with X-shaped CFRP ropes exhibited improved hysteretic behavior and ameliorated performance with respect to the reference non-strengthened BCJ specimens. The effectiveness and the easy-to-apply character of the presented innovate strengthening technique are also discussed. View this paper
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Articles (7)

  • Article
  • Open Access
17 Citations
4,898 Views
30 Pages

6 July 2021

In the last decades, the uses of fiber reinforced polymer (FRP) composites in the structural strengthening of reinforced concrete (RC) structures have become the state of the art, providing a valid alternative to the traditional use of steel plates....

  • Article
  • Open Access
18 Citations
11,090 Views
26 Pages

5 July 2021

An analytical and experimental investigation was conducted herein to examine the cyclic load behavior of beam–column joint subassemblages, typical of both the modern reinforced concrete (RC) structures and of the pre-1960s–1970s existing ones. Seven...

  • Article
  • Open Access
6 Citations
4,374 Views
16 Pages

2 July 2021

The anisotropy and strain rate dependence of the mechanical response of short-fiber-reinforced thermoplastics was studied using a straightforward micromechanical finite element analysis of representative volume elements (RVEs). RVEs are created based...

  • Article
  • Open Access
5 Citations
2,951 Views
11 Pages

1 July 2021

The versatile bast fiber jute has environmental benefits compared to glass fibers. However, for jute to be used in a composite, the fiber properties need to be altered. This study aims to improve the mechanical properties of jute yarn to make it more...

  • Article
  • Open Access
16 Citations
3,503 Views
16 Pages

Optimising the Workability and Strength of Concrete Modified with Anacardium Occidentale Nutshell Ash

  • Solomon Oyebisi,
  • Anthony Ede,
  • Hilary Owamah,
  • Tobit Igba,
  • Oluwaseun Mark and
  • Abimbola Odetoyan

1 July 2021

Strength failure persists both in structural and mechanical analysis. One of its prominent characteristics is the adequate provision for parameters that minimise or maximise strength objectives while satisfying boundary conditions. The previous optim...

  • Article
  • Open Access
59 Citations
7,827 Views
15 Pages

Application of X-Shaped CFRP Ropes for Structural Upgrading of Reinforced Concrete Beam–Column Joints under Cyclic Loading–Experimental Study

  • Emmanouil Golias,
  • Adamantis G. Zapris,
  • Violetta K. Kytinou,
  • Mourhat Osman,
  • Michail Koumtzis,
  • Danai Siapera,
  • Constantin E. Chalioris and
  • Chris G. Karayannis

1 July 2021

The effectiveness of externally applied fiber-reinforced polymer (FRP) ropes made of carbon fibers in X-shape formation and in both sides of the joint area of reinforced concrete (RC) beam–column connections is experimentally investigated. Six full-s...

  • Article
  • Open Access
18 Citations
4,118 Views
15 Pages

Flexural Performance of a New Hybrid Basalt-Polypropylene Fiber-Reinforced Concrete Oriented to Concrete Pipelines

  • Zhiyun Deng,
  • Xinrong Liu,
  • Ninghui Liang,
  • Albert de la Fuente and
  • Haoyang Peng

1 July 2021

The bending performance of a basalt-polypropylene fiber-reinforced concrete (HBPFRC) was characterized by testing 24,400 × 100 × 100 mm3 prismatic specimens in a four-point bending test JSCE-SF4 configuration. The type and content of both fibers were...

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Fibers - ISSN 2079-6439