Modulus of Elasticity of Concrete (AS 3600)

The modulus of elasticity of concrete () is a key material property that represents the stiffness of concrete. It defines how much a concrete element will deform under load and plays a critical role in structural design.

In practical terms, a higher modulus of elasticity means:

  • Less deflection
  • Greater stiffness
  • Better serviceability performance

The modulus of elasticity is widely used in:

  • Deflection calculations of beams and slabs
  • Serviceability limit state (SLS) design
  • Structural analysis and modelling (ETABS, SAP2000, SAFE)
  • Crack control and vibration assessment

Accurate estimation of Ec is essential for ensuring that structures perform safely and efficiently under working loads.

Elastic Modulus Calculator

According to AS 3600 (Table 3.1.2)

For Normal Concrete (Density = 2400 kg/m³)


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