Question

Silt soils are more susceptible to frost action than __________

(a) Sand soil and Clayey soil

(b) Gravel soil

(c) None of the mentioned

(d) All of the mentioned

The question was posed to me during an internship interview.

The question is from Frost Action in division Soil Water Effective and Neutral Stresses of Geotechnical Engineering I

Answer 1

Right option is (a) Sand soil and Clayey soil

For explanation: Silt soils have more plasticity index than sand and clays and hence the softening effect due to excess water will be more severe in silts.