The steel–concrete interface

• DOI: 10.1617/s11527-017-1010-1
• Publication Date: 2017-02-27T04:19:00Z
• Authors: Ueli M. Angst; Mette R. Geiker; Alexander Michel; Christoph Gehlen; Hong Wong; O. Burkan Isgor; Bernhard Elsener; Carolyn M. Hansson; Raoul François; Karla Hornbostel; Rob Polder; Maria Cruz Alonso; Mercedes Sanchez; Maria João Correia; Maria Criado; A. Sagüés; Nick Buenfeld
• Keywords: Interface (matter)

Although the steel–concrete interface (SCI) is widely recognized to influence durability of reinforced concrete, a systematic overview and detailed documentation various aspects SCI are lacking. In this paper, we compiled comprehensive list possible local characteristics at reviewed available information regarding their properties as well occurrence in engineering structures laboratory. Given complexity SCI, suggested approach describe it terms physical chemical properties. It was found that exhibits significant spatial inhomogeneity along around perpendicular reinforcing steel. The can differ strongly between different also members within structure; particular differences expected built before after 1970/1980s. A single representing all on-site conditions does not exist. Additionally, SCIs common laboratory-made specimens exhibit compared structures. Thus, results from laboratory studies practical experience should be applied with caution. Finally, recommendations for further research made.