Sports-ground surfaces etc. of rounded aggregates resin-impregnated in - opt. dressed with rubber, cork and/or fine aggregate

摘要

Hard surfaces for outdoor sports or games are produced by spraying a self curing binder resin system on to a layer of sand or gravel which has already been laid, levelled and compacted. The resin must be sufficiently mobile to permeate into the mass of the base in addition to coating the superficial particles. The particles must have rounded surfaces, i.e. water-eroded rived bed or beach aggregates. Used for prepn. of new surfaces or repair of old ones needing resurfacing. Avoids costs associated with prepn., transfer and laying of premixed aggregate/resin combinations. The rounded aggregate is highly resistant to choking, not having local asperities which break down in shear or compression within the pores.