Dear Ashadul Islam

These fibers are available in different shapes, lengths, and materials (steel, glass, pp, and...). Each has its own uses and advantages. However, they all have one thing in common, they prevent the spread of fine cracks and dramatically increase the mechanical properties of concrete. Thus, whenever and wherever you want to have concrete with more compressive strength, you can you these fibers.

Please note that the amount of fibers and distributing them evenly throughout the concrete are the key factors for achieving the best results.

Dear Mehran Shahpari

Thanks for your answer. As far I know fibre reinforced concrete is more significant for flexural strength rather than compressive strength. However, it is highly effective in resisting crack propagation and abrupt failure. In our country the practice of using FRC is very limited in construction industry.

Ashadul Islam

Yes, I said it increases the "mechanical properties" of concrete, which are compressive, tensile, and flexural strength.

Concrete novel additives, be it mechanical like steel fibers or chemical powder like nanoparticles, don't have Codes' approval yet. Hence, don't expect to see these additives in real projects.

Mehran Shahpari

This is exactly what I wanted to know is the Code's approval. Thanks for sharing.

Hi! The fiber-reinforced-concrete (FRC) extends the versatility of concrete and offers the potential to simplify the construction process. In slabs, foundations, and walls, fibers can replace ordinary reinforcement completely. In other structures, such as beams and suspended slabs, fibers can be used in combination with ordinary or pre-stressed reinforcement. Other noteworthy structural applications are tunnel linings and suspended flat slabs

without any conventional reinforcement.