Consolidation test - CRL method


Hello everybody,

I'm writing you to ask for the support regarding a consolidation test.

Recently I ordered some consolidation tests in order to take the parameter "cv" to calculate the time of settlements.
I mentioned that the loads should be applied after the stabilization of the curve settlement vs. time. However the laboratory is trying to save some time and they are forcing us to do the CRL method (Constant Ratio Loading). They say it will be faster but in my point of view the only way to be faster is to not wait until the stabilization of each curve which means that the results will not be accurate.
 
For this reason I would like to ask you, if you have any experience with this CRL method and if it will be ok to perform this method to get the cv parameter.
 
Thank you in advance.
 
Best regards
Diana
 
Soil Mechanics / Geotechnical Analysis Equipment Geotechnical Investigations & In-Situ Testing

5 Answers

Votes: 1

Mauro Battaglio

Diana, here attached you will find a very important paper on cohesive soils behaviour (by Prof. C. Ladd). See carefully chapter 6 (par. 6.3 and 6.4) because it could help you for your decision. I think that this paper is one of the most important publication in this field, not only for laboratory test interpretation.

Regards, Mauro Battaglio


Votes: 1

Diana Martins Marques

Hello Mauro,

Can you please tell me about the name of the paper. There isn't any attachment in your answer.

Thank you very much.


Votes: 1

Mauro Battaglio

Sorry. The paper is: "Recomended practice for soft ground site characterization" . Arthur Casagrande Lecture, prepared for 12th panamerican Conf. Soil Mechanics and Geotech. Eng. (2004). I have the pdf file, but I cannot attach to this message.

Regards, mauro

 


Votes: 1

Mauro Battaglio

Diana, go to "Files" and you'll find the file.


Votes: 1

Diana Martins Marques

I got it. Thank you very much.