Glossary of Terms and Acronyms Page 11 | 27 Engineered Crumb Rubber (ECR) The modification of very fine crumbs of tire rubber with chemical treatments that enhance rubber-binder interactions and improve the performance of asphalt mixes. ECR is typically added to hot mix asphalt during production using the dry process method. EPDM Ethylene Propylene Diene Monomer: a synthetic rubber used in a range of applications including various seals used in the automotive and construction industries. Recycled post- industrial EPDM rubber granules mixed with polyurethane is used as a top layer, typically over a recycled tire rubber base, in pour-in-place surfacing. Extruder A machine designed to force a rubber or rubber mix through an orifice, which is often shaped to the geometry of the desired product. (ASTM D1566 – 21) Extrusion A process of mechanically forcing material (such as blended crumb rubber) through a confined opening to produce film, strip, tubing, or other shapes. F Feedstock Conversion The process whereby a manufacturer replaces a portion of the raw materials (e.g., virgin rubber, EPDM, plastic, aggregate or other raw material) with recycled tire rubber in the manufacturer of a tire-derived product or use. Fines Naturally occurring small rubber particles created during the shredding process. Fines pass through a standard size screen on which coarser fragments are retained. For example, a 20-mesh screen may produce a small percentage of material that is smaller than the 20mesh size. Flow Control A legal or economic means that directs the movement of materials to a specific destination. Fluff (Fiber) The textile or reinforcing materials liberated from scrap tires or other rubber reinforced products during processing for crumb rubber. G
RkJQdWJsaXNoZXIy NzU3OTQ=