Maximum density obtained with different tests
Maximum density obtained with different tests
(OP)
Hi all,
I would be interested to hear your thoughts on the following: Is the maximum dry density for a given sandy soil approximately the same (in the same ballpark) when obtained using the modified Proctor test, compared with using the maximum dry density test obtained with the vibrating table set-up, both using the applicable ASTM standards?
Also, part B of the question: If anyone is familiar with the 1-point Michigan cone method for obtaining maximum dry density, would this test give a comparable value of max dry density when compared to the modified Proctor test? I think it would be a question of how much energy is put into each test. I my experience, the Michigan cone test certainly results in a higher max dry unit weight value than the standard Proctor test (5.5#, 12" drop, etc.), but I'm not sure about the mod. Proctor.
These questions can easily be answered simply by testing, which I wouldn't mind doing, but there's never enough time. If you know of any papers published comparing the methods please let me know.
Thanks
I would be interested to hear your thoughts on the following: Is the maximum dry density for a given sandy soil approximately the same (in the same ballpark) when obtained using the modified Proctor test, compared with using the maximum dry density test obtained with the vibrating table set-up, both using the applicable ASTM standards?
Also, part B of the question: If anyone is familiar with the 1-point Michigan cone method for obtaining maximum dry density, would this test give a comparable value of max dry density when compared to the modified Proctor test? I think it would be a question of how much energy is put into each test. I my experience, the Michigan cone test certainly results in a higher max dry unit weight value than the standard Proctor test (5.5#, 12" drop, etc.), but I'm not sure about the mod. Proctor.
These questions can easily be answered simply by testing, which I wouldn't mind doing, but there's never enough time. If you know of any papers published comparing the methods please let me know.
Thanks





RE: Maximum density obtained with different tests
I'm not familiar with the Michigan test - can't help you there.
RE: Maximum density obtained with different tests
RE: Maximum density obtained with different tests
After I submitted the original message, I came across a good paper that helped me out quite a bit and you may already be familiar with it: "Loose Sands-Their Compaction by Vibroflotation" by Elio D’Appolonia, American Society for Testing and Materials, 1969. In addition to the vibrocompaction aspect, the author also does some work in comparing the different methods for obtaining maximum (and minimum) unit weights of sands. I thought the explanation and discussion was very good. It's worth looking into for anyone interested in this subject.