Organic Content of Silts and Clays
Organic Content of Silts and Clays
(OP)
This may be more of a question for the lab guys, but we were discussing how to properly quantify the organic content in silts and clays. Per ASTM D2487-06, the sample must have a second oven dried sample for testing of the Atterberg Limits. My question is, if you oven-dry the second sample at 110 degrees Celcius, how are you supposed to treat the first sample? Do you ove-dry it at a lower oven temperature or do you run it as is right of the bag, no sieving or drying. I have compared both the ASTM D4318 - 10 to the ASTM D2487-06 and haven't really noticed a difference. Any help would be great. Thanks in Advance





RE: Organic Content of Silts and Clays
f-d
¡papá gordo ain’t no madre flaca!
RE: Organic Content of Silts and Clays
Rey Villa, MS, PE
http://geotech-apps.com
RE: Organic Content of Silts and Clays
The cited procedure (ASTM D 4318) does not determine the organic content. The ratio of air dry to oven dry liquid limit is merely for soil classification purposed (OL, OH, CL, CH, etc.). The is an organic content test if you are interested in the organic "content". ASTM D 2487 is only a soil classification procedure are not a test procedure.
RE: Organic Content of Silts and Clays
I'd rather use the ASTM method for organic soil classification than the organic content test. I recognize the value of both; however.
f-d
¡papá gordo ain’t no madre flaca!
RE: Organic Content of Silts and Clays
Rey Villa, MS, PE
http://geotech-apps.com