The experimental study presented here illustrates the favourable effect of hooked steel fibres in combination with steel spirals in both normal and high-strength concrete, for the cases of lightweight and normalweight aggregates. The results confirm that the presence of hooked steel fibres improves the behaviour in compression in the post-peak strain field; greater strength and ductility can be achieved, permitting a significant reduction of transverse steel reinforcement. Also, in the case of lightweight fibre reinforced concrete, a sufficient fibre content allows one to obtain performances comparable to those obtained from normalweight concrete, with the significant advantage of lower structural mass being maintained.
展开▼
