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International Journal of Concrete Structures and Materials

Table 8 Estimating equations of the different models.

From: Mechanical Properties of Energy Efficient Concretes Made with Binary, Ternary, and Quaternary Cementitious Blends of Fly Ash, Blast Furnace Slag, and Silica Fume

Mechanical property

Code

Estimating model

Modulus of elasticity

ACI 318-11

\( E_{c} = 4733\sqrt {f_{c}^{{\prime }} } \)

CEB-FIP, KCI-11

\( E_{c} = 8500 \cdot \sqrt {f^{\prime}_{c} + 8} \)

EN 1991

\( E_{c} = 22\left( {{{f_{cm} } \mathord{\left/ {\vphantom {{f_{cm} } {10}}} \right. \kern-0pt} {10}}} \right)^{0.3} \)

NZS 3101:1995

\( E_{C} = 3320\sqrt {f_{c}^{{\prime }} } + 6900 \)

CSA A23.3-04

\( E_{C} = 4500\sqrt {f_{c}^{{\prime }} } \)

  1. * At the time of testing.
  2. Ec: Modulus of elasticity of concrete at 28 days.
  3. \( f_{c}^{'} \): Compressive strength of concrete at 28 days.
  4. \( f_{cm} \): Mean compressive strength of concrete at 28 days.
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