Hydro-Mechanical Properties of an Unsaturated Frictional Material

132 CHAPTER 6. EXPERIMENTAL RESULTS
Void ratio (-)
Void ratio (-)
Void ratio (-)
0.895
0.890
0.885
0.880
0.875
0.870
0.865
0.860
0.895
0.890
0.885
0.880
0.875
0.870
0.865
0.860
0.895
0.890
0.885
0.880
0.875
0.870
0.865
0.860
w=0.03 S=1.00
Δe= 0.0015
1 10 100
Vertical net stress (kPa)
w=0.03 S=1.00
1 10 100
Vertical net stress (kPa)
Δe=0.0022
w=0.03 S=1.00
1 10 100
Vertical net stress (kPa)
Δe=0.0009
Void ratio (-)
Void ratio (-)
Void ratio (-)
0.895
0.890
0.885
0.880
0.875
0.870
0.865
0.860
0.895
0.890
0.885
0.880
0.875
0.870
0.865
0.895
0.890
0.885
0.880
0.875
0.870
0.865
0.860
ψ=5 kPa
S=1.00
Δe= 0.0031
1 10 100
Spannung [kPa]
ψ=5 kPa S=1.00
1 10 100
Vertical net stress (kPa)
Δe= 0.0020
ψ=5 kPa S=1.00
1 10 100
Vertical net stres (kPa)
Δe= 0.0020
Figure 6.17: Experimental results of collapse potential for loose specimen - Method 1 (left)
and Method 2 (right)
applied vertical net stress as well as void ratio versus applied vertical net stress results are
presented. The overall behavior is, that the collapse potential of Hostun Sand seems to be
small, when saturation process is carried out at vertical net stress σ = 5, 12 and 25 kPa.
Results from Method 1 show differences in void ratio of ∆e = 0.0015 for saturation at σ = 5
kPa, ∆e = 0.0022 for saturation at σ = 12 kPa and difference in void ratio of ∆e = 0.0009 for
saturation at σ = 25 kPa. Results from Method 2 show differences in void ratio of ∆e = 0.0031
for saturation at σ = 5 kPa, ∆e = 0.0020 for saturation at σ = 12 kPa and difference in void