gions Research and Engineering Laboratory,
CONCLUSIONS
Special Report 96-21, Mn/DOT Report 96-22.
Laboratory resilient modulus tests on the Mn/
Bigl, S.R. and R.L. Berg (1996c) Material test-
ROAD unbound base and subgrade materials have
ing and initial pavement design modeling: Minne-
resulted in the following:
sota Road Research Project. USA Cold Regions
1. All materials exhibited a two to three order of
Research and Engineering Laboratory, CRREL Re-
magnitude increase in resilient modulus at sub-
port 96-14, Mn/DOT Report 96-23.
freezing temperatures of 2C and lower.
Chamberlain, E.J. (1987) A freeze thaw test to
2. All of the materials exhibited an increase in
determine the frost susceptibility of soils. USA
modulus as the degree of saturation decreased.
Cold Regions Research and Engineering Labora-
3. The modulus value of all of the materials
tory, CRREL Special Report 87-1.
was stress dependent.
Cole, D.M., G.D. Durell and E.J. Chamberlain
4. For the highly frost-susceptible 1206 sub-
(1985) Repeated load triaxial testing of frozen
grade and the class 6 special base course, the
and thawed soils. Geotechnical Testing Journal, 8(4):
resilient modulus was also dependent on the
166170.
density of the sample tested. We did not test
Cole, D.M., D. Bentley, G.D. Durell and T.
samples at a wide variety of densities for the
Johnson (1986) Resilient modulus of freeze-thaw
other materials, but density probably impacts
affected granular soils for pavement design and
modulus values of those materials also.
evaluation. Part 1. Laboratory tests on soils from
Winchendon, Massachusetts, test sections. USA Cold
Regions Research and Engineering Laboratory,
CRREL Report 86-4.
LITERATURE CITED
Cole, D.M., D. Bentley, G.D. Durell and T.
Berg, R.L. (in prep.) Resilient modulus testing of
Johnson (1987) Resilient modulus of freeze-thaw
materials from Mn/ROAD, Phase 2. USA Cold
affected granular soils for pavement design and
Regions Research and Engineering Laboratory,
evaluation. Part 3. Laboratory tests on soils from
Special Report.
Albany County Airport. USA Cold Regions Re-
Bigl, S.R. and R.L. Berg (1996a) Testing of ma-
search and Engineering Laboratory, CRREL Re-
terials from the Minnesota Cold Regions Pave-
port 87-2.
ment Research Test Facility. USA Cold Regions
Robnet, Q.L., and M.R. Thompson (1973) In-
Research and Engineering Laboratory, Special
terim report--Resilient properties of subgrade
Report 96-20, Mn/DOT Report 96-24.
soils--Phase 1. Development of testing procedure.
Bigl, S.R. and R.L. Berg (1996b) Modeling of
Transportation Engineering Series 5, Illinois Co-
Mn/ROAD test sections with the CRREL mecha-
operative Highway Research Program Series 139,
nistic pavement design procedure. USA Cold Re-
University of Illinois, Urbana, Illinois, May.
20
Previous Page
