ON BONDING REPAIRING STEEL REINFORCED CONCRETE TO HARDENED CONCRETE
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Published:2005
E Bonaldo, Msc, J A Barros, P B Lourenco, 2005. "ON BONDING REPAIRING STEEL REINFORCED CONCRETE TO HARDENED CONCRETE", Repair and Renovation of Concrete Structures: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 5–6 My 2005, Ravindra K. Dhir, M. Roderick Jones, Li Zheng
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In the last years an emerging repair and strengthening technique for concrete slabs has been used, consisting of applying a thin layer of steel fibre reinforced concrete (SFRC) onto the existent concrete slab. The performance of the structural system depends on the bonding behaviour between old and new concretes. Adhesives based on epoxy resins currently make this liaison. The prices of these adhesives are quite different depending, mainly, on the percentage of pure resin that they include. In the present paper, three commercial adhesive compounds of distinct prices and properties were selected to bond concrete base and repairing SFRC overlay. The bond behaviour was assessed from pull-off tests and the influence of the strength class of concrete base and repairing SFRC was analysed. Finally, the performance of the adhesives was evaluated, considering both the bond strength and their prices.
INTRODUCTION
MATERIALS AND TEST SET-UP
RESULTS
SUMMARY AND CONCLUSIONS
ACKNOWLEDGEMENTS
REFERENCES
