Frost heave

[MramJ]

Hello everyone,


I am looking for a way to estimate frost heave of soils without specialized laboratory testing or investigation. I have frost depth, hydrometer results (showing 54% silts), and moisture content.

Is there a straightforward way to obtain a reasonably acceptable estimate with a factor of safety?

Thank you

 

[jhnblgr]

https://ascelibrary.org/doi/abs/10.1061/IJGNAI.GMENG-7710

What is the intent of this?
It’s best to remove frost susceptible soils.

 

[MramJ]

https://ascelibrary.org/doi/abs/10.1061/IJGNAI.GMENG-7710

What is the intent of this?
It’s best to remove frost susceptible soils.

The client cannot remove the frost susceptible soils and considering a compressible expanded polystyrene fill forms, so they need the estimated amount of frost heave.

 

[jhnblgr]

Reason why they can’t remove?
If they are installing insulation follow shallow foundation design for frost protection
Is this heated or unheated space?
What is the function?
Would the compressible foam compress under dead load or is there a foundation load path that spans the area?

 

[dik]

Silts are very bad for frost heave... you have to try to eliminate the frost... extruded polystyrene? High strength if necessary.

 

[CarlB]

Estimating with any accuracy is not likely possible. Perhaps can be somewhat, in a controlled environment like the ASCE study linked above.
You didn't mention ground water table level, that's a major factor. And the rate of frost advance is a factor. Even in somewhat consistent soils, the amount of heave can vary from place to place, and by season.