Mastic asphalt and embedded refrigerant pipes for the construction of ice rinks and ice surfaces, and for the simultaneous use as sports and play grounds

摘要

1. Process for the production of an artificially frozen ice rink structure consisting of the mineral, statically loadbearing base onto which a layer of material is placed lor the embedding of the pipes carrying the refrigerant are embedded consists of mastic asphalt, the bitumen content of pumped which is formed by primary bitumen which has a penetration (100g, 5s, 258C- of not less than 35 to 50 m**-1, a ring and ball softening point of max. 54 to 598C and a Fraas brittle temperature of a least -68C.