The system deposits thin layers of concrete onto surfaces through a nozzle, similar to the way spray paint is applied. These layers can be added, one upon another, in coats. Their light weight ...

When seawater penetrates concrete in road tunnels, a biofilm is formed that breaks down the concrete. This can lead to high ...

More than 40,000 bridges in the United States are deemed structurally deficient, and as many as 221,000 deemed in need of repair, according to the American Road & Transportation Builders Association.

Mecmesin’s Shotcrete Penetrometer offers accurate readings of the forces needed to penetrate poured or sprayed concrete during the first few hours of development, providing a reliable indication of ...

When vehicle tunnels are constructed through rock, the roof and walls are sprayed with concrete to create an even surface layer and prevent stones from loosening and falling onto the road.