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Calculate the effective thickness on a unit volume (Vol.), perpendicular to the direction of shrinkage to be calculated, for a unit drying surface (S.A. exposed): (mm)exposedS.A.Vol.meVolume Changes of ConcreteEm for a wallVolume Changes of ConcreteEm for a slab on gradeVolume Changes of ConcreteFor circular or square column there is drying in 2-dimensionsexposedS.A.2Vol.me(mm)Volume Changes of ConcreteEm for square columnsVolume Changes of ConcreteGoing from 2-D to 1-D
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9Volume Changes of ConcreteEm for circular columnsFeb 3Volume Changes of ConcreteVolume Changes of Concreteshrinkage strain of the concrete, ecs, at a given age, t.tebccskkkWhere ec = ultimate shrinkage strain of the cement paste fractionkb= a factor taking into account the w/cm and cement content of the concreteke= a factor taking into account the effective thickness of the concrete elementkt= a factor depending on the effective thickness and the time of dryingVolume Changes of ConcreteCEB Shrinkage, ecpVolume Changes of ConcreteCEB Shrinkage & Creep, KbVolume Changes of ConcreteCEB Shrinkage & Creep, Ke