There are multiple reasons for adding fibers in concrete. One of the main benefits of fibers are the homogenous distribution in the concrete. Other benefits include:
Better cohesion of the fresh concrete
Control and reduce crack sizes due to early-age shrinkage
Improve flexural and shear strength
Improve load capacity and ductility
Increase toughness and abrasion resistance
Increase resistance to explosive spalling
Replace or partially replace traditional reinforcing steel
Save time in the construction process and reduce costs
Wire mesh is commonly placed in concrete slabs for two primary reasons:
-to resist breaking apart and deteriorating when the slab eventually does crack
-to increase flexural strength of the slab .
Rebar, or reinforcing bar, is a common feature of many concrete applications. Its primary purpose is to increase the tensile strength of the concrete, helping it resist cracking and breaking. With greater tensile strength, concrete is better able to resist breaking under tension.