FraMCoS 8 2013 Toledo, Spain

Characterization of the Interface between Strain Hardening Cementitious Repair Layers and Concrete Subgrade

Results of experimental investigations into the mechanical behavior of the interface between strain hardening cement-based composites (SHCC) and concrete are presented. Wedge splitting tests served for the determination of the mode I fracture properties of the interface. The corresponding stress-crack…

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Year 2013
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Abstract

Results of experimental investigations into the mechanical behavior of the interface between strain hardening cement-based composites (SHCC) and concrete are presented. Wedge splitting tests served for the determination of the mode I fracture properties of the interface. The corresponding stress-crack opening curves were determined by inverse analysis of the experiments. Expectedly, they strongly depend on the roughness of the concrete surface if this roughness is smaller than a certain threshold value. Tests of the interface under combined tension and shear loading were also performed. The identification of the material parameters controlling the interface behavior under this type of loading will also require inverse analyses of the experiments.