Glossary of Terms and Acronyms Page 18 | 27 Pyrolysis The thermal decomposition of whole scrap tires or scrap tire derived rubber in an oxygen free reactor to chemically break the tire into its original components of oil, gas, char and steel. R Radial Tire A tire construction in which the body ply cords are placed nearly straight across the tire from bead to bead; the belt plies run circumferentially around the tire, under the tread, and constrict the radial ply cords. Reclaim or Reclaimed Rubber Vulcanized rubber treated by a combination of heat, chemical agents, and intense kneading to give a material essentially its pre-vulcanized plasticity, which is useful as a rubber compounding material. (ASTM 1566-21) Recovered Carbon Black (rCB) A semi-reinforcing filler obtained from the thermal degradation of rubber compounds, most frequently scrap tires. It contains 10-20 percent by weight inorganic compounding ingredients but is wire and fabric-free. rCB can be used in various applications including reinforcing filler in tires, pigments, ink, plastic and coatings. Recycled Rubber Any rubber material derived from processing scrap tires or other rubber products either through ambient shredding or cryogenic grinding. At no point in the process does the rubber undergo any chemical change. Recycling The process of collecting, recovering and processing materials from the waste stream, and turning them into new products and/or uses. Recycled Vulcanizate Particulate Rubber Vulcanized rubber that has been processed to give particulates or other forms of different shapes, sizes, and size distributions. The words “vulcanizate” and “vulcanized rubber” are interchangeable. ASTM 5644-18. Repaired Tire Any tire with punctures, cuts, or other types of injuries that have been reconditioned to restore strength and flexibility for additional vehicle service.
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