Compression behaviour and failure mechanisms of a safety culvert made of hollow high-performance concrete blocks

The safety culvert composed of hollow high-performance concrete blocks is designed to reduce the risk injury in event a collision. This work presents new design with an opening for water flow, tests it, identifies its weaknesses, and discusses possible improvements. numerical model constructed, validated by experiment, used study effect parameters on load capacity, compression behaviour, failure mechanisms. response varies most markedly diameter. mode changes from bending crushing as diameter decreases. pronounced diameters less than 400 mm, where capacity increases 6 kN per millimetre reduction. If crack develops during service life, first such will form top layer blocks, followed opening. These areas should be monitored more closely follow-up passing vehicles.