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 ...

Where there are people, concrete is nearly omnipresent. Where there are few or no people, concrete’s impact is also pervasive, because together concrete and cement are the world’s number two ...

North America Concrete Paving Road Construction Equipment Markets 2017 - Focus on Slipform Pavers, Concrete Placers/Spreaders, Texture/Curing Machines & Curb & Gutter Pavers - Research and Markets ...

The goal of Farnam’s work is to produce a concrete mix as strong as the ones currently used to build roads, that contains less calcium hydroxide — the ingredient that reacts with road salt to form a ...

However, these measures can have negative impacts to road structures, and the environment. Chlorine-based salt, for instance, can chemically react with concrete, and essentially eat the road from the ...