This test method is used to determine the particle size distribution of granular organic/plant-based infill materials by sieve analysis. The results may be used to determine compliance of the particle size distribution with applicable specification requirements and to provide necessary data for product specification sheets and process control during manufacturing. The data generated may also be useful in understanding the effects of wear/aging on these materials, as it would allow for comparison of pre-wear and post-wear infill samples.
Keywordssynthetic turf; infill; sieve analysis; granular organic; PSD
Over the past several years, the synthetic turf industry has seen a significant increase in the use of organic/plant-based infill materials. These materials include cork, wood, walnut shells, and olive pits, among others. There are currently no ASTM test methods specific to the determination of particle size distribution (PSD) of these infill materials. In the absence of a fully applicable method, existing methods for sieve analysis of other materials (aggregate, for example) are often used (with modification in many cases), to determine the PSD of the material. A consistent, repeatable standard method describing how to sample and determine the PSD of these infill materials via sieve analysis is needed to allow manufacturers to characterize their respective materials. A standard method would also allow specifiers and customers to verify compliance with the manufacturers specifications or published data. The method may also be useful in understanding the effects of wear/aging on these materials.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development