The Concrete mix
The concrete mix is critical with a good relationship and understanding between slipform contractor and concrete supplier essential.
The basic mix for barrier concrete is class C28/35 with air entrainment. Concrete design, in accordance with EN 206-1 and BS 8500 and compliance testing are detailed in the specification.
Aggregate selection is important and the natural interlock a crushed angular stone provides is very helpful.
An Installation Best Practice data sheet is available to view.