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Appendix Figure 32: VCL_1_241106 sample at the point of incipient shear failure Axial Displacement (mm) 25 20 15 10 5 0 0 0,05 0,1 0,15 0,2 0,25 Axial Load (kN) Figure 33: Axial displacement vs. axial load on sample VCL_1_241106 Summarizing this section the influence of differences in � 1 to � 2 and � 3 can be seen in Figure 34 where the virgin compression lines differ significantly if � 1 is bigger than � 2 and � 3 . The VCL with radial and axial load is much closer to the VCL created from the tyre pass data than if only radial pressure is taken into account. The result of the VCL with the radial-axial loading shown in Figure 34 was repeated with five more samples shown in Figure 35. VCL 1 came very close to the previous VCL. VCL 3 was weaker than the other one initially and the VCL 6 was slightly weaker. VCL 4 was even weaker. The VCL 2 from the second day was stronger than all the others. Ph.D. Thesis Dirk Ansorge (2007) 227
Appendix Rel. Density 2 1,9 1,8 1,7 1,6 1,5 1,4 1 10 100 1000 Mean Normal Pressure (kPa) VCL Radial VCL Radial and Axial VCL from Soil Bin (0.38) Figure 34: Virgin compression lines for radial and radial-axial loading with sandy Rel. Density 1,89 1,87 1,85 1,83 1,81 1,79 1,77 1,75 loam soil at 9 % moisture content 10 100 Mean Normal Pressure (kPa) VCL1 Soil Bin VCL VCL3 VCL 4 VCL6 VCL 2 Second Day VCL RadAx 1st Time Worked Figure 35: Replication of radial-axial loading to get a feeling for the variation The data in Figure 35 shows that it is difficult to reproduce similar results with this method. To judge which one of these curves would represent the appropriate VCL for the soil bin soil without the Soil Bin VCL as reference would be impossible. Therefore in a next step all five curves were averaged to gain an overall average VCL. Additionally the three VCLs, closest to the soil bin VCL, were averaged, VCL1, 3, and VCL2 second day, respectively. Both average VCLs were obtained by accounting for water compressibility, too. The initial curves had not been adjusted as the confining pressure is the same for all since the adjustment does not influence total variance. The average VCLs are shown in Figure 36 including the soil bin VCL as reference. The average of all five VCLs exhibits a good agreement with the soil bin VCL. Only taking the three closest VCLs into consideration, results in a VCL which would indicate the soil to be too strong. Ph.D. Thesis Dirk Ansorge (2007) 228
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Cranfield University School of Appl
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Abstract Ancillary experiments show
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Table of Contents TABLE OF CONTENTS
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Table of Contents 4.1.3 Analysis of
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Table of Contents 11.1.1.1 Comparis
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List of Figures and Tables Figure 3
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List of Figures and Tables Figure 1
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Nomenclature NOMENCLATURE Abbreviat
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Introduction 1 INTRODUCTION 1.1 Bac
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Introduction � Ansorge, D. and Go
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Introduction 1.2 Aim To elucidate t
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Introduction a) the soil compaction
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Experimental Methods 2.1.1.1 Test F
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Experimental Methods had been mount
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Experimental Methods track; the loa
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Experimental Methods 800/10.5/2.5 t
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Experimental Methods term. In the m
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Experimental Methods Soil Surface F
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Experimental Methods Depth (cm) 0 1
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Experimental Methods ence surface c
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Experimental Methods chine derives
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Experimental Methods depth. The dat
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Experimental Methods with water and
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Experimental Methods 2.4 Statistica
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Laboratory Studies Into Undercarria
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Field Study With Full Size Combine
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Alleviation of Soil Compaction Howe
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Alleviation of Soil Compaction not
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Alleviation of Soil Compaction in a
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Alleviation of Soil Compaction diff
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Soil Compaction Models sibilities t
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Soil Compaction Models depends on t
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Soil Compaction Models Wroth (1968)
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Soil Compaction Models however, the
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Soil Compaction Models level. Criti
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Soil Compaction Models Utilizing Ke
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Soil Compaction Models average of m
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Soil Compaction Models Depth (mm) -
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Soil Compaction Models ture content
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Soil Compaction Models with four ot
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Soil Compaction Models Predicted In
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Soil Compaction Models Depth (mm) -
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Soil Compaction Models and 13.7 % b
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Soil Compaction Models Rel. Density
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Soil Compaction Models VCL paramete
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Soil Compaction Models The approach
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Soil Compaction Models surface stay
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Soil Compaction Models This result
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Soil Compaction Models 6.6.1.3 Wate
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Soil Compaction Models σσ 1 (kPA)
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Soil Compaction Models pressure to
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Soil Compaction Models The response
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Soil Compaction Models On medium so
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Soil Compaction Models SOILFLEX tak
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Ancillary Experiments 7 ANCILLARY E
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Ancillary Experiments Average conta
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Ancillary Experiments In order to c
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Ancillary Experiments contrary, the
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Ancillary Experiments Figure 102: S
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Ancillary Experiments track and the
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Ancillary Experiments even when hav
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Ancillary Experiments 7.3.2 Influen
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Ancillary Experiments The results f
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Ancillary Experiments Figure 117: S
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Ancillary Experiments Contact Press
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Ancillary Experiments Figure 123: F
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Ancillary Experiments Sinkage (mm)
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Ancillary Experiments model which o
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Ancillary Experiments 7.3.5 The Inf
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Ancillary Experiments 7.3.7 Discuss
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Ancillary Experiments Terzaghi (194
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Ancillary Experiments contact area.
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Ancillary Experiments soil forward
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Page 195 and 196: Bibliography 10 BIBLIOGRAPHY Aboaba
Page 197 and 198: Bibliography Defossez, P., Richard,
Page 199 and 200: Bibliography Gregory, A.S.; Whalley
Page 201 and 202: Bibliography Lamande, M., Schjonnin
Page 203 and 204: Bibliography Seig, D., 1985. Soil C
Page 205 and 206: Appendix 11 APPENDIX Ph.D. Thesis D
Page 207 and 208: Appendix Figure 32: VCL sample at t
Page 209 and 210: Appendix comparison at the deepest
Page 211 and 212: Appendix Estimated Pressure (kPa) 2
Page 213 and 214: Appendix 11.1.1.2.1 SOCOMO One of t
Page 215 and 216: Appendix by Seig (1985) who showed
Page 217 and 218: Appendix Soil water content 15 % an
Page 219 and 220: Appendix Adapting critical state so
Page 221 and 222: Appendix density is obtained by add
Page 223 and 224: Appendix Table 5: Values of constan
Page 225 and 226: Appendix choice of a concentration
Page 227 and 228: Appendix 11.1.3.1 Dense/Hard and Lo
Page 229 and 230: Appendix 11.1.3.2 Stratified Soil C
Page 231 and 232: Appendix To summarize the ability t
Page 233 and 234: Appendix In the following the predi
Page 235 and 236: Appendix concentration factor of 4,
Page 237 and 238: Appendix 11.1.5.1 Confining Pressur
Page 239 and 240: Appendix Figure 24. The VCL created
Page 241 and 242: Appendix Rel. Density 2 1,9 1,8 1,7
Page 243: Appendix relation of � 1 to � 2
Page 247 and 248: Appendix Rel. Density 1,7 1,68 1,66
Page 249 and 250: Appendix Depth (mm) 0,0 100,0 200,0
Page 251 and 252: Appendix Figure 42: Plate in cookin
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Page 257 and 258: Appendix to the plate sinkage equat
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Page 261: Appendix Table 12: DBD values for a
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