K&C Steel-Fiber Reinforced Concrete Calculator

Unit System: mm-s-tonne-N-MPa (MPa for pressure/stress, ton/mm³ for density)

MPa
Valid range: 20 - 130 MPa
%
Typical range: 1 - 2%
-
Length/diameter ratio (typical: 30-100)
Affects dynamic increase factor calculations
ton/mm³
Typical concrete: 2.4e-9 ton/mm³

Reference

Lee S, Park GK, Cho JY, Han BC. An improved calibration method of the K&C model for modeling steel-fiber reinforced concrete. Composite Structures. 2021;273:114010.

https://doi.org/10.1016/j.compstruct.2021.114010

This calculator implements an improved calibration method for the K&C (Karagozian & Case) Concrete Damage Model specifically for Steel-Fiber Reinforced Concrete (SFRC). Valid Ranges: f'c = 20-130 MPa, Vf = 1-2%, hooked-end and straight steel fibers tested with various aspect ratios (l/d).