Test Method Particle Size Distribution of Recycled Rubber Vibration Shaker System Test Method Overview This section of the User Guide, Test and Classify the Source of Recycled Rubber, will provide an overview of the steps to perform the vibratory shaker system test method and identify how to measure the results of the test. The shaker system testing process, which follows the steps in ASTM D5644-18 Standard Test Method, describes the procedures for determining the average particle size distribution of recycled particulate rubber for 90 µm (170 mesh) or larger particles. The values referenced in the user guide are identified in both the International System of Units (SI) and in U.S. measurements. The values stated in SI units shall be considered standard and values stated in inch-pound units shall be considered informative as per the ASTM International Standards. We are using the W.S. Tylor Ro-Tap® RX-29 Model, designed for 200 mm (8 inch) diameter test sieve trays to perform the ASTM Designation D5644-18 Test Method. The shaker system provides a horizontal, circular motion and a vertical, tapping motion. This action allows material particles to fall through critical openings in the sieve trays. The shaker trays are used for particle separation and to determine the average particle size distribution of the recycled rubber. Both this user guide and the accompanying 10-minute video tutorial located at https://vimeo.com/532603028 provide instructions that follow the ASTM Designation D5644-18 Standard Test Method.
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