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

Table 4

Prediction equations for modulus of elasticity (previous researches).

Researcher	Equation	Limitation
KCI2007 [23]		Did not specify but cannot exceed
KCI2012 [24]	,, , where when and when . Interpolate between 40 MPa and 60 MPa
ACI318-11 [1]	(normal weight concrete),
CEB-fip 228 [9]	,
Martinez et al. [25]
Cook [26]		—
Ahmad and Shah [27]
Graybeal [11]
Gao et al. [28]
Padmarajaiah [29]

: secant elastic modulus of concrete at 0.45 (MPa), : unit weight of concrete (), : compressive strength of concrete (MPa), : reinforcing index, .