Concrete Properties

Properties of normal strength Portland cement concrete.

Property	Symbol	Min Value	Max Value	Unit (SI)	Unit (Imperial)
Density	ρ	2240	2400	kg/m³	lb/ft³
Compressive strength		20	40	MPa	psi
Flexural strength		3	5	MPa	psi
Tensile strength	σ	2	5	MPa	psi
Modulus of elasticity	E	14	41	GPa	×10⁶ psi
Permeability		1×10⁻¹⁰		cm/sec
Coefficient of thermal expansion	β	1×10⁻⁵		°C⁻¹	×10⁻⁶ °F⁻¹
Drying shrinkage		4×10⁻⁴	8×10⁻⁴
Drying shrinkage (reinforced)		2×10⁻⁴	3×10⁻⁴
Poisson's ratio		0.20	0.21
Shear strength	τ	6	17	MPa
Specific heat	c	0.75		kJ/kg K	Btu/lbm °F