Method for strengthening a road surface, strengthened road surface and an asphalt concrete therefor

摘要

The invention relates to a method for strengthening a road surface with an open surface structure, such as very open asphalt concrete (ZOAB), comprising of arranging a layer of asphalt concrete on the road surface, wherein the road surface respectively the asphalt concrete has a grain size distribution around an average such that an open surface structure is formed. The average grain size in the road surface is at least four times greater than that in the layer. Use is made of a layer with an excess of bituminous binder. According to the invention a road surface is obtained in which a layer of asphalt concrete is substantially taken up into an upper layer of the road surface, and the average grain size in the road surface is substantially a factor of four greater than that in the layer, wherein the bitumen of the applied layer has penetrated into the existing road surface.