# Concrete Properties

## Properties of normal strength Portland cement concrete.

Typical properties of normal strength Portland cement concrete:

- Density
*- ρ*:*2240 - 2400 kg/m*^{3}(140 - 150 lb/ft^{3}) - Compressive strength :
*20 - 40 MPa (3000 - 6000 psi)* - Flexural strength :
*3 - 5 MPa (400 - 700 psi)* - Tensile strength -
*σ*:*2 - 5 MPa (300 - 700 psi)* - Modulus of elasticity -
*E*:*14 - 41 GPa (2 - 6 x 10*^{6}psi) - Permeability :
*1 x 10*^{-10}cm/sec - Coefficient of thermal expansion -
*β*:*10*^{-5}^{o}C^{-1 }(5.5 x 10^{-6}^{o}F^{-1}) - Drying shrinkage :
*4 - 8 x 10*^{-4} - Drying shrinkage of reinforced concrete :
*2 - 3 x 10*^{-4} - Poisson's ratio :
*0.20 - 0.21* - Shear strength -
*τ*:*6 - 17 MPa* - Specific heat -
*c*:*0.75 kJ/kg K (0.18 Btu/lb*_{m }^{o}F (kcal/kg^{ o}C))