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Maximum particle size -Triaxial

Maximum particle size -Triaxial

Maximum particle size -Triaxial

Hello all,

According to the ASTM D4767, the maximum particle size for the triaxial specimen should be less than 1/6 diameter. Can you share your experiences about this, whay sieve do you use for a 2.8'' remoulded specimen and 4'' remoulded specimen.

I would appreciate your comments.

Best regards,

RE: Maximum particle size -Triaxial

One reply. My need for triaxial tests was quite limited and besides, the cost of an elaborate group of test gear had to be balanced against need. The only triaxial tests I did were on undisturbed mostly clay samples from 2" and 3" Shelby tubes. I saw no need for using disturbed samples. This is from my experience on many hundred jobs of many types. Generally little or no gravel content for the test sample.

RE: Maximum particle size -Triaxial

Triaxial tests can be performed on any gradation....the ASTM standard is for general soil conditions....rock triaxials are common.

RE: Maximum particle size -Triaxial

I agree with Ron and oldestguy. /i should also note that depending on the project, if you have substantial budget, a large triaxial cell can be used. I used a large triaxial chamber once for a mega dam project and the cell was almost 0.6 m tall! a huge cell and such an expensive test.

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