A good flow of traffic is important for several reasons. Firstly, accelerating and decelerating traffic causes more carbon emission. Secondly, a good traffic flow makes traffic safer and increases the liveability of an area.
Roundabouts are intensively used and as a result of increased heavy traffic and axel loads, the wear of the surface will increase as well. Moreover, roundabouts deal with a lot of turning traffic. The choice of concrete for roundabouts is an obvious one, because it is resistant to heavy traffic loads. Maintenance requirements are minimal, which benefits the functionality of the roundabout.
There are many different types of roundabouts, such as small roundabouts, mini-roundabouts and turbo roundabouts. All of these roundabouts can be made of concrete, regardless of the size of the roundabout. Not only the surface of the road, but also connecting roads, (channel) kerbs and stamped surfaces can be made of concrete.
Three types of concrete can be used for roundabouts:
- Plain concrete: this type is recommended for light traffic loads
- Doweled plain concrete: recommended for roundabouts with a lot of light traffic, for example in urban areas
- Reinforced concrete: recommended for (very) heavy traffic loads, for example in industrial areas.