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Material: Recycled Glass CWC Best Practices in Glass Recycling Sampling Procedures for Recycled Glass Construction Aggregate



Issue: Engineers and contractors often require examination or characterization of fill materials prior to import to a project site. This characterization or testing is typically performed on one or a set of samples which must be representative of the gross material in storage. This best practice describes procedures that pertain to sampling of glass for construction applications. These descriptions are not comprehensive. Rather, they have been developed to introduce procedures. Best Practice: The physical properties of glass cullet as a granular material have been well enough established to give specifying engineers confidence in its efficacy in properly designed construction applications. However, the engineering characteristics and workability of any specific lot of material depend to a large extent on the gradation and debris content of that particular lot. Glass aggregate in storage or stockpiles may become segregated by size or may contain debris such as food residues, metal caps, plastic, paper, and other non-aggregate materials. Sampling procedures must be conducted to insure that changes in gradation and debris content are within tolerances. A separate Best Practice, Sampling and Testing Procedures for Recycled Glass, is available for information on sampling procedures for other glass applications. Sampling of recycled glass can be achieved directly from storage locations such as bins, bunkers an

Year: 2013
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