Patent ID: 6155749
Filing Date: 2000-12-05
Classification: C09K,E01C,Y10S

Abstract:
In a process for constructing, maintaining, or grooming a skinned sports surface wherein a sports field conditioner is applied as a top dress, the improvement comprising:selecting as said top dress a top dress comprising generally angular, porous, and non-hydrating calcined clay conditioner granules, said granules having particle sizes such that the following distribution, in weight percent, is obtained: particle size %  >2 mm .ltoreq.15.0 0.85-2 mm .gtoreq.60.0 0.60-0.85 mm .ltoreq.17.5 <0.60 mm .ltoreq.7.0  said granules comprising the porous calcined product of a clay-containing material, said granules having a bulk density of between about 0.40 g/cm.sup.3 to about 0.72 g/cm.sup.3, and exhibiting less than 15% degradation in the sulfate soundness test, andapplying said top dress to said sports field.