What are the commonly used synthetic fibers in concrete?

 What are the commonly used synthetic fibers in concrete?

 Short fibers like PP fibers,PP Monofilament fibers and PP twisted fibers are  commonly used to fiber-reinforced concrete.

Main functions:

A. Toughening effect

B. Enhancement effect

C. Increase intensity

D. Anti cracking effect

E. Improve hardness

PP twisted fibers

PP Monofilament fibers 

PP fiber