Investigation of high-strength rubberised concrete for roadside barriers

This thesis explores the use of 3D-printed high-strength rubberised concrete for roadside barriers, combining sustainability with improved safety performance. Rubberised concrete, incorporating crumb rubber and steel fibres, demonstrates superior energy absorption, reduced spalling under high temperatures, and enhanced impact resistance. Full-scale crash tests confirm that rubberised barriers outperform traditional barriers, with better occupant deceleration and post-impact stability, despite slightly higher vehicle deformation. The research proves the feasibility of 3D-printed rubberized concrete, offering a safer and more sustainable alternative to traditional concrete, with the potential for large-scale implementation in road safety infrastructure.