FCS3

ASTM D1817 - Standard Test Method for Rubber Chemicals — Density: This test method covers the determination of the density of solid chemicals used as rubber additives during processing and manufacture. It is intended for determining the density of the rubber chemical itself and not for the determination of the effective density of the chemical in a rubber. ASTM D6814 - Determination of Percent Devulcanization of Crumb Rubber Based on Crosslink Density: This test covers the procedure for determining percent devulcanization from crosslink density measurements of devulcanized rubber and control crumb rubber in the laboratory. While it is primarily used for devulcanized materials it is also useful to establish an acceptable level of crosslink density. This will help to guard against rubber reversion a potential problem if the crumb rubber particle has been over heated.

Contractor’s Report

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