Technical information

2-10
Table 2.3.1: Resilient modulus of subgrade soil with average compaction level of 96%.
Raw test results from laboratory reports.
Confining
Pressure,
psi (kPa)
Peak
Cyclic
Stress
psi
(kPa)
Resilient
Modulus,
psi (MPa)
Peak
Cyclic
Stress,
psi
(kPa)
Resilient
Modulus,
psi (MPa)
Peak
Cyclic
Stress,
psi
(kPa)
Resilient
Modulus,
psi (MPa)
ω=7.2% ω =9.7% ω=20.1%
6.0
(41.4)
2.1
(14.5)
10,876
(75.0)
2.1
(14.5)
9,970
(68.7)
2.2
(15.2)
10,034
(69.2)
4.0
(27.6)
11,738
(80.9)
4.0
(27.6)
11,177
(77.1)
4.1
(28.3)
10,653
(73.4)
5.8
(40.0)
11,730
(80.9)
5.9
(40.7)
11,478
(79.1)
5.9
(40.7)
10,568
(72.9)
7.7
(53.1)
12,260
(84.5)
7.7
(53.1)
11,922
(82.2)
7.7
(53.1)
10,511
(72.5)
9.6
(66.2)
12,837
(88.5)
9.6
(66.2)
12,384
(85.4)
9.6
(66.2)
10,477
(72.2)
4.0
(27.6)
2.1
(14.5)
10,311
(71.1)
2.0
(13.8)
7,310
(50.4)
2.1
(14.5)
8,502
(58.6)
3.9
(26.9)
10,222
(70.5)
3.9
(26.9)
7,762
(53.5)
4.0
(27.6)
8,614
(59.4)
5.7
(39.3)
10,252
(70.7)
5.9
(40.7)
8,487
(58.5)
5.9
(40.7)
8,736
(60.2)
7.6
(52.4)
10,465
(72.2)
7.8
(53.8)
9,225
(63.6)
7.7
(53.1)
8,854
(61.0)
9.5
(65.5)
10,965
(75.6)
9.7
(66.9)
9,987
(68.9)
9.6
(66.2)
9,101
(62.7)
2.0
(13.8)
1.9
(13.1)
7,871
(54.3)
2.0
(13.8)
4,339
(29.9)
2.0
(13.8)
5,032
(34.7)
3.8
(26.2)
7,783
(53.7)
4.0
(27.6)
4,701
(32.4)
4.0
(27.6)
5,451
(37.6)
5.6
(38.6)
7,920
(54.6)
6.0
(41.4)
5,507
(38.0)
5.9
(40.7)
6,119
(42.2)
7.5
(51.7)
8,216
(56.6)
7.9
(54.5)
6,285
(43.3)
7.8
(53.8)
6,641
(45.8)
9.5
(65.5)
8,776
(60.5)
9.7
(66.9)
7,084
(48.8)
9.7
(66.9)
7,149
(49.3)
The resilient modulus of the base material was also tested according to
AASHTO T307 procedure. Tests were done on specimens recompacted to a dry density
of 128.6 pcf (2062 kg/m³). This value represents a relatively low compaction degree of