3. Behavior along a rework surface (concrete-concrete interface)
3.1 State of the art
The behavior of the interface subjected to longitudinal shear stresses can be described using shear-friction theory.
It should be noted, however, that the term "shear-friction theory" is misleading because 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 transfer surface (concrete interface) subjected to external shear and compression 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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Behavior along a rework surface (concrete-concrete interface)
Assumptions for sizing the recovery area
Bibliography
Standards and norms
- Characterization of pavement texture using surface profiles – Part 1: Determination of mean profile depth - EN ISO 13473-1 - 2019
- Products and systems for the protection and repair of concrete structures. Test methods Measurement of bond strength by pull-off - EN 1542 - 1999
- Design and requirements for construction works of post-installed shear connection for two concrete layers, EOTA - TR 066 - novembre...
Regulations
Decree of October 22, 2010 on the classification and seismic construction rules applicable to buildings classified as "normal risk"
Seismic design of non-structural elements in buildings – Seismic justification for buildings at "normal risk," Ministry of Ecology, Sustainable Development, and Energy, and Ministry of Housing, Territorial Equality, and Rural Affairs, 2014
Directory
Manufacturers – Suppliers – Distributors
PROFIS Engineering, [Software] HILTI France.
https://profisengineering.hilti.com/
Organizations – Federations – Associations
National Union of Contractors Specializing in Structural Repair and Reinforcement (STRRES)
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