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Article | REF: C2264 V1

Reinforcement of Concrete Structures. Concrete Overlay Design

Author: Gaël LE BLOA

Publication date: February 10, 2023 | Lire en français

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    3. Behavior along a recovery surface (concrete-concrete interface)

    3.1 State of the art

    The behavior of an interface subjected to longitudinal shear stress can be described using shear-friction theory.

    However, it should be noted that the term "shear-friction theory" is misleading, as it actually encompasses several other physical and mechanical phenomena.

    This theory is based on the initial assumption that the mechanism for transmitting shear stresses at a bearing surface (concrete interface) subjected to external shear and compressive forces is provided exclusively by friction. As a general rule, a simple "sawtooth" model is used to illustrate the fundamentals of this approach (figure

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