Abstract
This paper describes the use of steel fibres in Roller Compacted Concrete (RCC) for pavement applications. This work is part of the EU funded project Ecolanes, which aims to develop long lasting rigid pavements. It begins by discussing the benefits associated with rigid pavements with a special reference to fibre reinforced concrete and RCC. The objective of the specific part of the presented work is to investigate the effect of adding fibres in RCC from a structural standpoint, and to discuss the improvement in strength and toughness characteristics, and comment on the effect that different fibre types may have as reinforcement. The importance of fibre geometry on the flexural behaviour of steel fibre reinforced RCC (SFR-RCC) is demonstrated. RCC reinforced with fibres obtained from industrial sources and fibres obtained from the bead wire of recycled tyres, resulted in better flexural behaviour, compared to RCC reinforced with tyre cord fibres recovered from recycled tyres, at equivalent fibre ratios. However, the recycled tyre cord fibres could be a viable alternative if used at higher fibre volumes.
KEYWORDS: Pavement, Roller Compacted concrete, Fibre reinforced concrete, Recycled materials.
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