Hi Everyone;
Can any one tell how we calculate the bond stiffness between steel and concrete, not Bond stree but Bond stiffness. and I wan to understand this formulation about Bond Stifness if anyone have information about it.
You Find the equation below.
Doni Triatmojo
Example Calculation:Suppose we have a reinforced concrete beam. Pu represents the ultimate load capacity before bond failure, let's say it's 100 kN. S 0.5 Pu denotes the slip corresponding to half of the ultimate load capacity. Let's assume it's 2 mm. Plug these values into the formula: ks =0.5×100 kN2 mmks=2 mm0.5×100 kN Calculate: ks=50 kN2 mmks=2 mm50 kN ks=25 kN/mmks=25 kN/mm Explanation:In this example, the bond stiffness ks between the steel reinforcement and concrete is 25 kN/mm. It indicates that for every millimeter of slip between the steel and concrete, there's a resistance of 25 kN
- Pu represents the ultimate load capacity before bond failure.
- S 0.5 Pu denotes the slip corresponding to half of the ultimate load capacity. This slip indicates the displacement between steel and concrete at half of the ultimate load capacity.
- Thus, ks quantifies the stiffness of the bond between steel and concrete, with higher values indicating stronger bonding and resistance to slip.
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Ramdane Amrouche
Dear Doni Triatmojo;
Thank you very much for this description and explanation.
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