Stress Corrosion Behavior of Ungrouted Pretensioned Concrete Beams

Table 3

Initial and final crack load for the flexural concrete beams.

Designation	Initial crack load (kN)	Final crack load (kN)	Modulus of rupture (Fb) (N/mm^2)
Control	78	120.6	5.36
1% NaCl	76	98.5	4.38
2% NaCl	67	90.6	4.03
3% NaCl	64	80.9	3.60