Assessing the Instantaneous Stiffness of Cracked Reinforced Concrete Beams Based on a Gradual Change in Strain Distributions

<div>Cracking patterns of the test beams (solid lines = 1st stage; dotted lines = 2nd stage).</div>

Advances in Materials Science and Engineering

Figure 5: Assessing the Instantaneous Stiffness of Cracked Reinforced Concrete Beams Based on a Gradual Change in Strain Distributions 