ISKRIT / Site investigation & geotechnics / Frozen soils
Site investigation & geotechnics
Frozen soils: ice content, strength, thaw settlement, frost heave
The tool computes laboratory properties of frozen soils by the current GOST standards: ice content with the soil name, cohesion from the ball penetration test, uniaxial strength, thaw settlement and compressibility coefficients, frost heave grade and tangential heave stress. Test series are processed statistically right away.
Data current as of 2026-09-26
Standards
GOST 25100-2020 (table A.1, tables B.21, B.22 and B.24), GOST 12248.7-2020 (ball penetration test, formula 9.1), GOST 12248.9-2020 (uniaxial compression), GOST 12248.10-2020 (thaw settlement), GOST 28622-2012 (frost heave), GOST 27217 (tangential frost heave forces), statistics per GOST 20522-2012.
Input
Water contents and densities of the frozen soil, ball loads and penetrations, failure loads, thaw stages, heave deformations.
Output
Name by ice content, c_eq, R, Ath and m, frost heave grade, normative and design values of each series.
What it does
- Ice content and the frozen soil name, ball penetration cohesion, uniaxial strength, thaw settlement and frost heave
- Series statistics per GOST 20522 with outlier rejection
- Load tests from Excel, export to XLSX and a printable test report
- Calculations are stored on the server and reopen next time, company letterhead with signatures
Price
Free in full, no sign-up and no payment.
Open the calculator →Questions
How is the total ice content computed?
By table A.1 of GOST 25100-2020: i_tot = ρf·(w_tot − w_w) / (ρi·(1 + w_tot)) with ρi = 0.9 g/cm³. Sand is named by the total ice content, clayey and rock soils by the ice content of visible ice inclusions.
Which formula does the ball penetration test use?
Formula 9.1 of GOST 12248.7-2020: c_eq = 0.6·Kp·F/(d·S) with the load in kN, the ball diameter and penetration in cm, the result in MPa. Kp equals 1 for a test run to conditional stabilisation.
How is the frost heave grade found?
Per GOST 28622: the heave strain of each specimen ε = hf/(df − hf), the result is the mean of at least three specimens, named by table B.24 of GOST 25100-2020.