Resilient paving composition for playfields sports fields and recreation areas

摘要

A porous resilient paving system for use on well-drained soil as a playing surface is described as havingPP(1) a soil- covering layer consisting essentially of mineral aggregate having a thickness in the range of from about 2 to about 4 inches;P P(2) a layer of fibrous vulcanized rubber particles covering layer (1) , said layer (2) having a thickness in the range of from about one-half to about two inches;PP(3) a core composition layer covering layer (2) consisting essentially of a matrix formed from about 70 to 87 weight percent vulcanized rubber fibers bonded with from about 13 to 30 weight percent of a rubber latex selected from the group consisting of natural rubber latex and synthetic rubber latex; and PP(4) a topping layer covering layer (3) consisting essentially of from about 68-74 weight percent vulcanized rubber particles of from about 12-30 mesh, zinc oxide in an amount from about 1- 7 weight percent and bonded with about 25 weight percent of a rubber latex.