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International Journal of Concrete Structures and Materials

Table 4 MOE calculation parameters during construction time intervals.

From: Effect of a Time Dependent Concrete Modulus of Elasticity on Prestress Losses in Bridge Girders

t final (days)

k c [Eq. (11)]

Creep coefficient, ψ [Eq. (9)]

ACI f′ c (t), MPa [Eq. (12)]

2

0.149

0.04

1,404

10

0.169

0.15

3,200

14

0.178

0.18

3,522

104

0.327

0.66

4,502

134

0.360

0.77

4,546

254

0.451

1.08

4,620

365

0.502

1.27

4,646

730

0.586

1.60

4,676

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