Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregateby Abrasion and lmpact in the Los Angeles Machine

Designation: C131/C131M -14 Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregateby Abrasion and lmpact in the Los Angeles Machine1 1. Scope* 1.1 This test method covers a procedure for testing of coarseaggregates with a maximum size smaller than 37.5 mm ([1 /in.] for resistance to degradation using the Los Angeles testingmachine (Note 1). NoE 1—A procedure for testing coarse aggregate larger than 19.0 mm[ /a in.] is covered in Test Method C535.Thus coarse aggregates with amaximum size between 19 mm [/4 in.] and 37.5 mm [1 / in.] may betested by Test Method C535 or Test Method C131/C131M. 1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore,eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard. NonE 2—Sieve size is identified by its standard designation in Speci-fication E11. The Alternative designation given in parentheses is forinformation only and does not represent a different standard sieve size. 1.3 This standard does not purport to address all of thesafety concerns，if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safery and health practices and determine the applica-bility of reguulatory limitations prior to use. 2. Referenced Documents 2.1 ASTM Standards:2 A6/A6M Specification for General Requirements for RolledStructural Steel Bars，Plates，Shapes, and Sheet PilingC125 Terminology Relating to Concrete and Concrete Ag-gregates