Patent ID: 6626607
Filing Date: 2003-09-30
Classification: G01M

Abstract:
A vehicular test course surface obtained by making snow fall or accumulate on an asphalt concrete or concrete road surface artificially, using a water sprinkler equipment for sprinkling water onto the road surface and cooling equipment for cooling the road surface,wherein the artificial snow fall or accumulation is effected by cooling a water-absorbing resin in a water-absorbed state, the water-absorbing resin is selected from the group consisting of graft polymer type or carboxymethyl polymer type starchy polymer resins, graft polymer type or carboxymethyl type cellulosic polymer resins, polyacrylates, polyvinyl alcohols, polyacrylamides and polyoxythylenes, in the form of amorphous powder, spherical granules, short fibers, or films, and at least one of water-repellant silicone resin and polyvinyl alcohol is applied to surfaces of the water-absorbing resin by coating.