Field Density Testing 9

[Mazzman]

Is it standard practice in your area (where are you?) to conduct periodic "backup" tests using sand cone (ASTM D1556), drive cylinder (ASTM D2937), or other methods to check the accuracy of tests conducted using a nuclear density device (ASTM D2922)?

Do you know of any authoritative published sources that recommend or specify that such "backup" tests be conducted?

 

[dmoler]

Techmaximus, can you please explain this comment you made?

"The most important and most widely neglected check is the proctor check point. I’d like to see one proctor check point for every 3 density tests or at least one a day."