What is bond? Explain various types of bond. What is anchorage length?

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written 8.4 years ago by

teamques10 ★ 68k

The force which prevents the relative movement between the two constituent materials is known as Bond.
This force, since it acts parallel to the reinforcement and prevents the impending shearing action between the two at their interface, is also known as the interfacial shear.
There are 3 types of bond:

a) For transferring the force from the bar to the surrounding concrete before it is terminated. The required to be developed is called Anchorage bond.

b) The change in the bar force occurs along its length due to variation in bending moment in this length. The bond force developed is called Flexural bond.

c) For transferring the force to the bar from surrounding concrete, the bond required to be developed is called Development bond.
Anchorage length is a length required to transfer the force from steel to concrete.
Anchorage bond stress arises when a bar carrying certain force F to be terminated. In such a case, it is necessary to transfer this force F in the bar to the concrete through bond
The length Ld of embedment of bar beyond the theoretical termination point is known as Anchorage length.

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