From Civil Engineering Formulas
MODULUS OF ELASTICITY OF CONCRETE
The modulus of elasticity of concrete E c adopted in modified form by the ACI Code is given by
With normal-weight, normal-density concrete these two relations can be simplified to
where E c = modulus of elasticity of concrete, lb/in 2 (MPa); and
= specified 28-day compressive strength of concrete, lb/in 2 (MPa).
Products & Services
Topics of Interest
PROPERTIES IN THE HARDENED STATE Strength is a property of concrete that nearly always is of concern. Usually, it is determined by the ultimate strength of a specimen in compression, but sometimes...
WATER/CEMENTITIOUS MATERIALS RATIO The water/cementitious (w/c) ratio is used in both tensile and compressive strength analyses of Portland concrete cement. This ratio is found from where w...
Material properties depend on many variables and vary widely. The properties given here are approximate mean values. Elastic strength may be represented by yield stress, proportional limit, or offset...
12.2 EXAMPLE ALLOWABLE STRESS DESIGN OF COMPOSITE ROLLED-BEAM STRINGER BRIDGE To illustrate the design procedure, a two-lane highway bridge with simply supported, composite, rolled-beam stringers...
12.2 EXAMPLE-ALLOWABLE-STRESS DESIGN OF COMPOSITE, ROLLED-BEAM STRINGER BRIDGE To illustrate the design procedure, a two-lane highway bridge with simply supported, composite, rolled-beam stringers...