TM 5-852-4/AFM 88-19, Chap. 4
1.
Gradations and other characteristics of these soils are shown in figure 2-11.
2.
Rate of stress increase in unconfined compression tests, 400 psi/min. Rate of stress increase in tension tests, 40
psi/min.
3.
Insufficient data available to show probable curvature of envelopes.
4.
Average degree of saturation:
SNH,
Manchester Fine Sand, 84%
SM,
McNamara Concrete Sand, 89%
SNHS,
New Hampshire Silt, 88%
SEBT,
East Boston Till, 93%
SAP,
Alaskan Peat, 98%
SBC,
Boston Blue Clay, 98%
SDC,
Dow Field Clay, 98%
U. S. Army Corps of Engineers
Figure 4-53. Mohr envelopes for frozen soils under moderately rapid loading, from tension and unconfined compression
tests33.
4-80
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