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Fibers
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Recent Advancements in Fiber Reinforced Concrete And its Applications
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Recent Advancements in Fiber Reinforced Concrete And its Applications

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

Deadline for manuscript submissions: closed (31 May 2018) | Viewed by 37686

Special Issue Editor

Dr. Akanshu Sharma

E-Mail Website
Guest Editor
Lyles School of Civil Engineering, Purdue University, West Lafayette, IN 47907-2051, USA
Interests: performance based design of RC structures; static and dynamic testing of RC structures and sub-assemblages; seismic retrofitting of structures with innovative techniques; seismic behavior of cast-in and post-installed anchors in concrete; anchorages with supplementary reinforcement; numerical modeling of structures under seismic loads; modeling of anchorages for interaction between structure and equipment; impact behavior of reinforced concrete structures; fracture mechanics of concrete structures; modeling of bond between reinforcement and concrete; performance of RC structures subjected to fire loads; structural applications of new concrete based materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The mechanical, thermal or durability properties of concrete can be improved by adding fibers into the concrete mix during casting. The addition of steel fibers in concrete is known to improve the mechanical properties, such as its strength, fracture energy, toughness, etc. This can help in reducing the congestion of reinforcement in the critical discontinuity regions by deriving a better performance from concrete by making its fracture relatively ductile. Addition of polypropylene fibers can prevent explosive spalling of high strength concrete under fire. Similarly, fibers made of carbon, aramid, glass, lead, etc. have been investigated by the researchers to alter one or more properties of concrete. Hybridizing the fibers optimally may improve different properties of concrete. Thus, fiber-reinforced concrete can serve as an excellent construction material to have a better performance of structures against normal loads, as well as extreme hazards, such as seismic, fire, impact, etc. However, addition of fibers increases the effort in mixing and obtaining a uniform concrete mix.

Past few years have seen a strong increase in the experimental and numerical research and application in the field of fiber reinforced concrete. This Special Issue targets to publish the recent advancements in the field of fiber reinforced concrete, from mixing requirements to material performance to structural applications and numerical modeling. I hope that this Special Issue will be able to provide a good overview on the advancements in fiber-reinforced concrete.

Jun. Prof. Dr.-Ing. Akanshu Sharma
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fibers is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Fiber reinforced concrete
  • Material behavior
  • Structural applications
  • Numerical modeling
  • Mechanical performance
  • Fire performance
  • Steel fibers
  • Hybrid fibers

Published Papers (4 papers)

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Research

13 pages, 8889 KiB  
Article
Mechanical Properties of Concrete with Steel and Polypropylene Fibres at Elevated Temperatures
by Josipa Bošnjak, Akanshu Sharma and Kevin Grauf
Fibers 2019, 7(2), 9; https://doi.org/10.3390/fib7020009 - 24 Jan 2019
Cited by 44 | Viewed by 8147
Abstract
Addition of steel fibres to concrete is known to have a significant positive influence on the mechanical properties of concrete. Micro polypropylene (PP) fibres are added to concrete to improve its performance under thermal loads such as in case of fire by preventing [...] Read more.
Addition of steel fibres to concrete is known to have a significant positive influence on the mechanical properties of concrete. Micro polypropylene (PP) fibres are added to concrete to improve its performance under thermal loads such as in case of fire by preventing the phenomena of explosive spalling. An optimum mixture of steel and micro PP fibres added to concrete may be utilized to enhance both the mechanical and thermal behaviour of concrete. In this work, systematic investigations were carried out to study the influence of elevated temperature on the mechanical properties and physical properties of high strength concrete without and with fibres. Three different mixtures for high strength concrete were used, namely normal concrete without fibres, Steel fibre reinforced concrete and Hybrid fibre reinforced concrete having a blend of hooked end steel fibres and micro PP fibres. The specimens were tested in ambient conditions as well as after exposure to a pre-defined elevated temperature and cooling down to room temperature. For all investigated concrete mixtures the thermal degradation of following properties were investigated: compressive strength, tensile splitting strength, bending strength, fracture energy and static modulus of elasticity. This paper summarizes the findings of the tests performed. Full article
(This article belongs to the Special Issue Recent Advancements in Fiber Reinforced Concrete And its Applications)
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16 pages, 2110 KiB  
Article
Experimental Investigation of the Physical and Mechanical Properties of Sisal Fiber-Reinforced Concrete
by Abass Abayomi Okeola, Silvester Ochieng Abuodha and John Mwero
Fibers 2018, 6(3), 53; https://doi.org/10.3390/fib6030053 - 01 Aug 2018
Cited by 68 | Viewed by 9840
Abstract
Concrete is a very popular material in the construction industry—it is, however, susceptible to quasi-brittle failure and restricted energy absorption after yielding. The incorporation of short discrete fibers has shown great promise in addressing these shortfalls. A natural fiber such as sisal is [...] Read more.
Concrete is a very popular material in the construction industry—it is, however, susceptible to quasi-brittle failure and restricted energy absorption after yielding. The incorporation of short discrete fibers has shown great promise in addressing these shortfalls. A natural fiber such as sisal is renewable, cheap, and easily available. It has also exhibited good tensile strength and can significantly improve the performance of concrete. In this study, the physical and mechanical properties of sisal fiber-reinforced concrete were reported. Sisal fibers were added in the mix at percentages of 0.5%, 1.0%, 1.5%, and 2.0% by weight of cement. Physical properties measured are workability, water absorption, and density while mechanical properties reported are compression strength, split tensile strength, and static modulus of elasticity. The computed modulus of elasticity of sisal fiber-reinforced concrete was compared with predicted values in some common design codes. From the study, it was concluded that sisal fiber can enhance the split tensile strength and Young’s modulus of concrete but cannot improve its workability, water absorption, and compressive strength. Full article
(This article belongs to the Special Issue Recent Advancements in Fiber Reinforced Concrete And its Applications)
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14 pages, 2504 KiB  
Article
Influence of Steel and Macro-Synthetic Fibers on Concrete Properties
by Veronica Guerini, Antonio Conforti, Giovanni Plizzari and Shiho Kawashima
Fibers 2018, 6(3), 47; https://doi.org/10.3390/fib6030047 - 11 Jul 2018
Cited by 90 | Viewed by 8552
Abstract
Fiber addition has become one of the most prevalent methods for enhancing the tensile behavior of concrete. Fibers reduce cracking phenomena and improve the energy absorption capacity of the structure. On the other hand, the introduction of fibers can introduce a negative impact [...] Read more.
Fiber addition has become one of the most prevalent methods for enhancing the tensile behavior of concrete. Fibers reduce cracking phenomena and improve the energy absorption capacity of the structure. On the other hand, the introduction of fibers can introduce a negative impact on concrete workability, whose loss is influenced by different parameters (among which are fiber content and fiber type). In this context, an exploratory study on the influence of steel (high stiffness) and macro-synthetic (low stiffness) fibers on the fresh properties of concrete was carried out, considering workability and air content, as well as resultant mechanical performance. Four fiber types at two volume fractions (0.5% and 1.0%) were studied in two base concretes with different water-to-cement ratios (0.45 and 0.50) by using the slump test, DIN flow table test and air content meter. An additional parameter for the DIN flow table test is proposed herein to quantify the potential preferential flow direction caused by fiber orientation and entanglement. Air meter results showed that the fibers caused only a slight increase in concrete air content; this agreed well with the results of mechanical testing, which showed no apparent effect on measured compressive strength. In addition, it was captured that, for a given fiber volume fraction, steel fibers more adversely affected Fiber Reinforced Concrete (FRC) workability as compared to polypropylene ones, while the opposite result was obtained considering FRC toughness. Full article
(This article belongs to the Special Issue Recent Advancements in Fiber Reinforced Concrete And its Applications)
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13 pages, 7458 KiB  
Article
Restrained Shrinkage Cracking of Fiber-Reinforced High-Strength Concrete
by Ashkan Saradar, Behzad Tahmouresi, Ehsan Mohseni and Ali Shadmani
Fibers 2018, 6(1), 12; https://doi.org/10.3390/fib6010012 - 19 Feb 2018
Cited by 63 | Viewed by 9518
Abstract
Concrete shrinkage and volume reduction happens due to the loss of moisture, which eventually results in cracks and more concrete deformation. In this study, the effect of polypropylene (PP), steel, glass, basalt, and polyolefin fibers on compressive and flexural strength, drying shrinkage, and [...] Read more.
Concrete shrinkage and volume reduction happens due to the loss of moisture, which eventually results in cracks and more concrete deformation. In this study, the effect of polypropylene (PP), steel, glass, basalt, and polyolefin fibers on compressive and flexural strength, drying shrinkage, and cracking potential, using the ring test at early ages of high-strength concrete mixtures, was investigated. The restrained shrinkage test was performed on concrete ring specimens according to the ASTM C1581 standard. The crack width and age of restrained shrinkage cracking were the main parameters studied in this research. The results indicated that the addition of fiber increases the compressive strength by 16%, 20%, and 3% at the age of 3, 7, and 28 days, respectively, and increases the flexural toughness index up to 7.7 times. Steel and glass fibers had a better performance in flexural strength, but relatively poor action in the velocity reduction and cracking time of the restrained shrinkage. Additionally, cracks in all concrete ring specimens except for the polypropylene-containing mixture, was developed to a full depth crack. The mixture with polypropylene fiber indicated a reduction in crack width up to 62% and an increasing age cracking up to 84%. Full article
(This article belongs to the Special Issue Recent Advancements in Fiber Reinforced Concrete And its Applications)
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