TECHNOLOGICAL WATCH SERVICE
Technical Article
Powered by:

Interfacial fracture toughness of composite concrete beams

A test for measuring the interfacial fracture toughness of a bi-material interface, essentially for concrete overlaid pavements was developed. The measured interfacial fracture toughness of steel fibre-reinforced, roller-compacted, polymer modified concrete (SFR-RC-PMC) onto ordinary Portland cement concrete (OPCC) was found to be 52.0?J/m2 and 22.6?J/m2 for rough and smooth interfaces respectively. The experimental interfacial fracture toughness results can be suitable for the design of overlays on worn concrete pavements.

In addition, the measured interfacial fracture toughness was used to predict the cracking trajectory of the composite beams under four-point bending (4?PB) tests. It was concluded that a single interfacial fracture parameter, the ERR (energy release rate) at interface, is an appropriate and sufficient parameter to assess the interfacial delamination performance of a composite beam under 4?PB flexure.

» Author: Yougui Lin, John N. Karadelis

» Reference: 10.1016/j.conbuildmat.2019.04.066

» Publication Date: 20/07/2019

» More Information

« Go to Technological Watch



AIMPLAS - Instituto Tecnológico del Plástico | C/ Gustave Eiffel, 4 (Valčncia Parc Tecnolňgic) | 46980 - PATERNA (Valencia) - SPAIN
(+34) 96 136 60 40
ecogelcronos@aimplas.es

This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n° [609203].

The sole responsibility for the content of this website lies with the authors. It does not necessarily reflect the opinion of the EC. The EC is not responsible for any use that may be made of the information contained therein.