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))
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