Fiber-Reinforced Concrete-A Comprehensive Review

Fiber reinforced concrete (FRC) is a concrete containing a water, hydraulic cement, and distributed fibers [1]. Fibers can be in form of steel fiber, glass fiber, natural fiber (asbestos, cellulose) or are a manufactured product such as glass, steel, carbon, and polymer, synthetic fiber. The quantity of fibers used is small, typically 1.0- 5.0 % by volume [2]. The crucial aim of fibers is to link or connect the gaps that spread in concrete to raise the flexibility and ductility of the concrete. The modification on post-cracking attitude of concrete provides more impedance to the impact strength. Controlling the plastic compression cracking and drying shrinkage cracking decreases the permeability of concrete matrix; therefore, reducing the water leakage [3,4]. Adding 0.8 wt. % of plastic improves the strength recorded. Thus, it is concluded that the use plastic can possibly increase the tensile strength of concrete [3,5]. The use of plastic can improves the properties of concrete that is considered a plastic disposal method. Figures 1, 2, and 3 shows the mechanism of concrete failures under different tests (Figures 1, 2, and 3).

1) Steel Fiber

2) Polypropylene Fiber

3) Glass-Fiber

4) Asbestos fibers

5) Carbon fibers

Steel fiber

• Steel fiber are of different shape and size.

• Steel fiber is the most known used fibers.

• Steel fiber has an elevated tensile and compression strengths.

Application of SFRC :-

• Airport Pavements

• Tunnel Lining

• Bridge Deck Slab repairs, and so on

Natural fiber:

• Natural Fibers is inexpensive and renewable substitute to the metallic and synthetic fibers in the building materials.

• When natural fiber is used in construction activities, it costs a very little value.

• Natural Fibers is used in cheap concrete ingredients as a reinforcement material that used in tropical earthquake regions.

Artificial fiber

• Synthetic Fibers are produced from manmade elements that can resist the long term alkaline environment of concrete -[6].

• It is made from synthesized polymers.

• The components used to fabricate these fibers made from feedstocks such as petroleum and chemicals.

Advantages of Nylon Fiber :-

• The contract of concrete cracking is due to the plastic shrinkage [7].

• Decrease the concrete permeability.

• Areas that needs both alkali proof and chemical resistant materials.

Glass fiber

• It is manufactured from very fine glass fibers.

• Glass Fiber is a lightweight, extremely strong, and robust material.

Uses of Glass Fiber:-

• Rolls twine around missile casingsExhaust nozzles

• Heat shields for aeronautical equipments

• Wall paneling

• Boat hulls and seats

• Fishing rods

The energy absorption capacity absorbed in fiber-reinforced concrete is 40 times more for than that of pure concrete. Adding fiber increases the strength and decreases the cracks. At high temperature, FRC have more strength in both compression and tension

None.

No Conflict of interest.

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