Table 4. Laboratory tests performed on Mn/ROAD materials.
Physical properties
Grain
Specific Atterberg Organic
Hydraul
Compact
Frost
Unfrozen
Resilient
Material
size
gravity
limits
content
prop.
test
suscept.
moisture
modulus
Subgrade
1171*
o
o
o
o
o
o
o
o
1193*
o
o
o
o
o
o
o
1206
o
o
o
o
o
o
o
o
o
1232
o
o
o
o
o
o
o
o
o
Class 3 sp
stockpile
o
o
o
o
o
o
o
o
Class 4 sp
TAS†
test strip
F
o
P
o
o
F
Class 5 sp
DGS**
stockpile
F
o
F
F
o
P
Class 6 sp
stockpile
o
o
o
o
o
o
o
Notes:
o work completed in this study
data from other studies
P presently being conducted
F planned future work
no plan to complete this cell in test matrix
"test strip" materials were taken from inplace test strip adjacent to Mn/ROAD
"stockpile" materials were furnished from stockpiles manufactured for the Mn/ROAD project
* Test results from this subgrade sample are in separate reports--see text.
† TAS, taxiway A subbase (substitute material for modeling)
** DGS, dense graded stone (substitute material for modeling)
materials that were specified to include a range of
ity of two subgrade samples from stations 1171
frost susceptibility. Of the four bases, the two ex-
and 1193. Since their properties were similar to
treme gradations (class 3 special and class 6 spe-
the 1232 and 1206 samples, respectively, they were
cial) were tested for all properties. Testing of the
not tested for resilient modulus.
two intermediate base materials (class 4 special
Because materials for the two intermediate bases
and class 5 special) was accomplished after this
were unavailable when the initial laboratory test-
study was complete. Two subgrade samples re-
ing for the pre-1993 modeling portions of this
ceived the full series of tests. They are referred to
study were conducted, their behavior was ap-
with the project station number where they had
proximated using data from previously tested ma-
been collected--1206 and 1232*. Tests were also
terials that most closely matched their specified
conducted to determine general physical charac-
size gradations. A subbase from taxiway A at the
teristics, unfrozen moisture, and frost susceptibil-
Albany, New York, airport most closely matched
the class 4 special subbase specifications; dense-
graded stone from Winchendon, Massachusetts,
most closely matched the class 5 special material
(Fig. 9). These materials are referred to here, re-
*The original Mn/DOT sample numbers for the subgrade samples
spectively, as TAS and DGS.
were 563 for 1171, 564 for 1193, 565 for 1206, and 566 for 1232.
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