Civil engineer, Federal Highway Administration, U.S. Department of Transportation, Washington, DC,
Associate professor and director, Cornell University, Ithaca, NY
Because of the importance that side friction plays in the direct freezing tests of soils it was decided to compare four freezing cell geometries to determine which showed the least resistance to frost heaving. Two of the most common freezing cells, the tapered cylinder and the multi-ring cyclinder, were selected to be compared to the Cornell split cylinder freezing cell. A tapered wall multi-ring freezing cell was also compared to see if a combination geometry offered any advantages. Soils were compacted in the molds using the standard Proctor method. The specimens were frozen simultaneously using the Corp of Engineers twelve-day freeze test procedure. The results showed that the multi-ring cylinders were far superior to the tapered wall and split cylinder freezing cells. The tapered wall multi-ring freezing cell did not offer any advantages over the multi-ring cylinder freezing cell.
Paper ID: GTJ10010J