Determination of pre-consolidation pressure by strain-energy method
Determination of pre-consolidation pressure by strain-energy method
(OP)
Hello,
Our laboratory only uses typical Casagrande method for determination of pre-consolidation pressure in conventional consolidation tests. I am planning to introduce a second option and currently my first choice is strain-energy method such as Tavenas method. There are two questions here:
1 – Does anyone have a comment in regard to using strain-energy method for determining pre-consolidation pressure. Most of the published papers are calling it a more accurate and easier to use method. I am wondering if you have come to the same conclusion in real life experience/project?
2 – I have read a few published papers on this topic and there are a few methods for strain-energy which are slight different. However, in order to use it in practice, I prefer to use a method that is endorsed by a standard. I could not find anything in ASTM. Is there any standard that endorsed this method?
Thanks in advance.
Regards, geoman110
Our laboratory only uses typical Casagrande method for determination of pre-consolidation pressure in conventional consolidation tests. I am planning to introduce a second option and currently my first choice is strain-energy method such as Tavenas method. There are two questions here:
1 – Does anyone have a comment in regard to using strain-energy method for determining pre-consolidation pressure. Most of the published papers are calling it a more accurate and easier to use method. I am wondering if you have come to the same conclusion in real life experience/project?
2 – I have read a few published papers on this topic and there are a few methods for strain-energy which are slight different. However, in order to use it in practice, I prefer to use a method that is endorsed by a standard. I could not find anything in ASTM. Is there any standard that endorsed this method?
Thanks in advance.
Regards, geoman110





RE: Determination of pre-consolidation pressure by strain-energy method
RE: Determination of pre-consolidation pressure by strain-energy method
I will check out the suggested method and also dig more into the Strain-Energy method. I will keep everyone posted of the outcome. Meanwhile, if anybody has more comments, it is greatly appreciated
RE: Determination of pre-consolidation pressure by strain-energy method
Pacheco Silva, F. 1970. A new graphical construction for determination of the pre-consolidation stress of a soil sample. In Proceedings of the 4th Brazilian Conference on Soil Mechanics and Foundation Engineering, Rio de Janeiro, Brazil. Vol. 2, No.1, pp. 225–232.
RE: Determination of pre-consolidation pressure by strain-energy method
RE: Determination of pre-consolidation pressure by strain-energy method
BigH, I am not sure if I understand the meaning of your story correctly. Did Casagrande mean his method is just estimation or there is something else that I am missing?
In respect to the strain-energy method, I have done some research and so far it appears a good secondary/confirmatory method. However, I am not done reading and cannot come to a final conclusion yet. I will keep everyone posted when I have finished reading all the collected references.
RE: Determination of pre-consolidation pressure by strain-energy method
RE: Determination of pre-consolidation pressure by strain-energy method