Concrete slab has cover layer with visible side consisting of different coloured sections consisting of self-compacting flow concrete and between which are provided very narrow expansion joints

摘要

The concrete slab consists of a base and a cover layer connected to it, the visible side of which consist of different coloured sections (5,6) which consist of self-compacting flow concrete and between which are provided very narrow expansion joints. The base and cover layer through the wet-on-wet material binding connection form a block. The base consists of concrete used for pavement and road slabs. The expansion joints have a width of 1-5 mm, and a depth of preferably 10 mm, and the base has a multiply larger thickness which is at least 20 mm.