20.60 Close of comment period Jan 1, 1999
CEN/TC 227 Road materials
This European Standard describes a method for determining the permeability of a cylindrical specimen of porous asphalt. The specimen can be cored out of the road or from laboratory made slabs or may be laboratory prepared with a compaction device. The permeability can be determined in both the horizontal and in the vertical direction.
20.60 Close of comment period
Jan 1, 1999