Properties of a bond between the steel reinforcement and the new generation concretes – a review

Abstract

Abstract The constant development of civil engineering has led to the creation of new generation concretes. Normal concrete is modified in order to provide a plethora of new properties, such as better mechanical characteristics, increased durability and lower environmental impact. This paper presents a literature review of bond behaviour in the new generation concretes, in particular high-performance concrete (HPC), self-compacting concrete (SCC) and high-performance self-compacting concrete (HPSCC). The bond strength test procedures, as well as bond-slip models, are presented. However, these methods are not entirely accurate in the case of new generation concretes due to various modifications of the materials. The scope of the research included, among other things, the influence of material choice on the bond properties. The paper also delineates the impact of compressive strength of the bond properties in the case of new generation concretes. Last but not least, the effect of rebar location is analysed. The study shows several differences in the bond behaviour of the new generation concretes and normal concrete under investigation.