Compressive Behavior and Mechanical Characteristics and Their Application to Stress-Strain Relationship of Steel Fiber-Reinforced Reactive Powder Concrete

Table 3

Prediction equations for strain at peak stress (previous researches).

Researcher	Equation	Limitation [MPa]
Collins et al. [6]	, ,
Wee et al. [7]
Ros [16]
Fafitis and Shah [17]
De Nicolo et al. [18]
CEB-fip 228 [9]
EC2 [19]	,  for  MPa; otherwise
Soroushian and Lee [20]	,	—
Nataraja et al. [21]	,
Dhakal et al. [22]	,  (flat),   (hooked)

: secant elastic modulus of concrete at 0.45 (MPa), : strain corresponding to peak stress (normal concrete), : compressive strength of concrete (MPa), : reinforcing index, : diameter of steel fiber (mm), : length of steel fiber (mm), : volume fraction of steel fiber, : weight fraction of steel fiber.