Penetrating seawater carries bacteria that form colonies – biofilm. The bacteria attack the concrete that is supposed to prevent stones from loosening from the tunnel walls. The concrete becomes ...

What is fibre-reinforced concrete and how can rail engineers benefit from its unique properties? Bernard Berge, product specialist engineer, fibre division for Maccaferri, explains. Major ...

When seawater penetrates concrete in road tunnels, a biofilm is formed that breaks down the concrete. This can lead to high costs and the risk of damage if stone and concrete drop from the tunnel roof ...