How to measure volume change on old triaxial setup

[danieljgalles]

Hi, I'm about to start running some drained triaxial tests on dense sand. For my research, it's very important that I measure the dilation in the sand specimen. However, the triaxial test machine I'll be using cannot measure volume change. Instead of a pressure/volume controller, my setup only has a pressure controller. Does anyone have a good idea how I can measure volume change? I'm thinking that attaching some kind of flow meter inline with water line that runs from the triaxial cell to the pressure controller is the way to go. Does this seem reasonable? If so, any suggestions on a reasonably priced low-flow meter?

Thanks,
Daniel

 

[Ron]

Use a site glass in a closed system

 

[danieljgalles]

Ron, I considered that, but I question the accuracy of a sight glass for small volume changes. Also, a sight glass would be considerably more difficult to install (in my setup) than something inline.

 

[fattdad]

The old equipment is based on using the sight tube.

f-d

ípapß gordo ainÆt no madre flaca!

 

[L0k]

Hi dan
I think you have to use a burette to monitor the volume change and this will ensure to be tested in drain condition for sand specimen.