Heave of Silty Sands

by Mehmet A. Sherif, (M.ASCE), Prof. of Civ. Engrg.; Univ. of Washington, Seattle, Wash.,
Wing-Wai Ding, Grad. Student in Civ. Engrg.; Univ. of Washington, Seattle, Wash.,
Isao Ishibashi, (A.M.ASCE), Research Assoc. and Lect. in Civ. Engrg.; Univ. of Washington, Seattle, Wash.,

Serial Information: Journal of the Geotechnical Engineering Division, 1977, Vol. 103, Issue 3, Pg. 185-195

Document Type: Journal Paper


Freezing tests were conducted at the University of Washington Periglacial Laboratories on predominantly quartz mineral silty sands at five different gradations, with a degree of fineness of (grain size diameter less than 0.02 mm) 5.6%, 8.4%, 10.6%, 15.4%, and 21.5% by weight. The soils were placed in the freezing cells at their optimum moisture contents. The experiments were carried out at three different surface temperatures, -2°C, -5°C, and -10°C, for a period of 72 hr each. From these experiments a relationship has emerged that relates the amount of soil heave H in mm to temperature in γ, in -°C, degrees of fineness, F, in percentage, and freezing time, T, in days. The amount of heave predicted with the aforementioned relationship agrees very well with the experimental values obtained in the laboratory.

Subject Headings: Frozen soils | Freezing | Heave | Silt | Sandy soils | Soil water | Temperature effects | Colleges and universities

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