ASTM C535 Standard Test Method for Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
Description:
Significance and Use
5.1 The test has been widely used as an indicator of the relative quality or competence of various sources of aggregate having similar mineral compositions. The results do not automatically permit valid comparisons to be made between sources distinctly different in origin, composition, or structure. Assign specification limits with extreme care in consideration of available aggregate types and their performance history in specific end uses.
Scope
1.1 This test method covers testing sizes of coarse aggregate larger than 19 mm (3/4 in.) for resistance to degradation using the Los Angeles testing machine (Note 1).
NOTE 1: A procedure for testing coarse aggregate smaller than 37.5 mm (11/2 in.) is covered in Test Method C131/C131M.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound values given in parentheses are for information only.
ASTM C531