CBR Moisture
CBR Moisture
(OP)
Hello,
The ASTM method for CBR requires a moisture be taken after the test is complete from the middle and the top one inch. What is the purpose and how frequently is it used.
Thank you
Ron
The ASTM method for CBR requires a moisture be taken after the test is complete from the middle and the top one inch. What is the purpose and how frequently is it used.
Thank you
Ron





RE: CBR Moisture
The moisture content can change within the sample from the compaction process. If the moisture content is slightly above optimum, the excess moisture will tend to accumulate near the bottom of the sample.
If I remember correctly (it has been a while since I've done the test), the sample is taken only before and after the compaction process, not after the penetration testing.
RE: CBR Moisture
From what I understand the two moistures should be completed for each test. How frequently used - well that would depend on the user.
RE: CBR Moisture
Ron