Los Angeles test machine
Los Angeles test machine
(OP)
Resistance to fragmentation with Los Angeles machine : is there any standard specifying min acceptable values for different jobs (i.e., stock yards for light or heavy weight, urban roads, highway, etc) ?
Thanks for help
Thanks for help





RE: Los Angeles test machine
Go to ASTM and search L.A. Abrasion and you'll get numerous references to various standards that give acceptance criteria.
RE: Los Angeles test machine
Also, we have this language in our pavement's subbase/base course specs:
Material retained on the 4.75 mm sieve shall have a percentage of wear not to
exceed 50 percent after 500 revolutions when tested as specified in
ASTM C131/C131M. At least 50 percent by weight retained on each sieve
shall have one freshly fractured face with the area at least equal to 75
percent of the smallest midsectional area of the piece. Aggregate shall
be reasonably uniform in density and quality.
See this link for the test method: http://www.pavementinteractive.org/los-angeles-abr...
RE: Los Angeles test machine
http://docs.trb.org/prp/08-2729.pdf