nt color=blue>
Microsoft Word - A - Manual Cover - Credits - Foreword - ToC
02/14/2005
NDOT Geotechnical Policies and Procedures Manual
GEOTECHNICAL POLICIES AND PROCEDURES MANUAL
CHAPTER 8
LABORATORY TESTS LABORATORY TESTING
8-i
02/14/2005
NDOT Geotechnical Policies and Procedures Manual
TABLE OF CONTENTS
1.
PURPOSE............................................................................................................ 1
2.
INTRODUCTION .................................................................................................. 1
3.
SOILS................................................................................................................... 1
3.1
Atterberg Limits Tests........................................................................................... 2
3.1.1.
Liquid Limit ........................................................................................................... 2
3.1.2.
Plastic Limit .......................................................................................................... 2
3.1.3.
Plasticity Index...................................................................................................... 2
3.1.4.
Shrinkage Limit..................................................................................................... 3
3.2
Grain-Size Analysis (Gradation) Tests ................................................................. 3
3.2.1.
Sieve Analysis Test .............................................................................................. 3
3.2.2.
Hydrometer Test................................................................................................... 3
3.3
Moisture Content Test .......................................................................................... 4
3.4
Compaction Tests ................................................................................................ 4
3.4.1.
Standard Proctor .................................................................................................. 4
3.4.2.
Modified Proctor ................................................................................................... 4
3.4.3.
Relative Density Tests.......................................................................................... 5
3.4.4.
Maximum Index Density ....................................................................................... 5
3.4.5.
Minimum Index Density. ....................................................................................... 5
3.5
Unit Weight Test................................................................................................... 5
3.6
Specific Gravity Test............................................................................................. 5
3.7
Chemical Tests..................................................................................................... 6
3.8
Visual Classification Tests.................................................................................... 6
3.9
Organic Content Test ........................................................................................... 6
3.10
R-Value Test ........................................................................................................ 7
3.11
Strength Tests ...................................................................................................... 7
3.11.1.
Unconfined Compression Test ............................................................................. 8
3.11.2.
Triaxial Compression Tests .................................................................................. 8
3.12
Consolidation Tests............................................................................................ 10
3.12.1.
One-Dimensional Test........................................................................................ 11
3.12.2.
Constant Rate of Strain Test .............................................................................. 12
3.13
Collapse Potential Tests..................................................................................... 12
3.14
Swell Potential Tests (Clays).............................................................................. 12
3.14.1.
Soil Suction Test ................................................................................................ 12
3.14.2.
Oedometer Swell Test ........................................................................................ 13
3.14.3.
Shrinkage Limit Test........................................................................................... 13
3.15
Permeability Tests.............................................................................................. 13
3.15.1.
Constant Head Test ........................................................................................... 13
3.15.2.
Falling Head Test ............................................................................................... 13
3.15.3.
Triaxial Permeability Test ................................................................................... 13
3.16
Dynamic Properties ............................................................................................ 14 LABORATORY TESTING
8-ii
02/14/2005
NDOT Geotechnical Policies and Procedures Manual
4.
CORRELATIONS of Soil Properties................................................................... 14
5.
ROCK ................................................................................................................. 15
5.1
Visual Classifications.......................................................................................... 15
5.2
Absorption and Bulk Specific Gravity Tests........................................................ 15
5.3
Durability Tests................................................................................................... 15
5.3.1.
Jar Slake Test .................................................................................................... 16
5.3.2.
Slake Durability Test (2-cycle)............................................................................ 16
5.4
Soundness Test ................................................................................................. 16
5.5
Permeability Test................................................................................................ 17
5.6
Rock Strength Test............................................................................................. 17
5.6.1.
Point Load Strength Index Test .......................................................................... 17
5.6.2.
Unconfined Compression Test ........................................................................... 17
5.6.3.
Triaxial Compressive Strength Test ................................................................... 17
5.6.4.
Elastic Moduli Uniaxial Compressive Test....................................................... 18
5.6.5.
Splitting Tensile Strength Test............................................................................ 18
5.6.6.
Direct Shear Test ............................................................................................... 18
5.7
Unit Weight Test................................................................................................. 18
6.
CORRELATIONS OF ROCK PROPERTIES...................................................... 18
7.
SPECIFICATIONS AND STANDARDS .............................................................. 20
8.
FIGURES ........................................................................................................... 23
8-1: Geotechnical Lab Task Sheet ..................................................................... 23
8-2: Geotechnical Lab Task Sheet, continued.................................................... 24
8-3: Summary of Results.................................................................................... 25
8-4: Line Sampling Data ..................................................................................... 26
8-5: Plasticity Index ............................................................................................ 27
8-6: Particle Size Distribution Report.................................................................. 28
8-7: Chemical Analysis ....................................................................................... 29
8-8: Consolidation Test Report........................................................................... 30
8-9: Hydrocollapse Test Report.......................................................................... 31
8-10: Direct Shear Test Report........................................................................... 32
9.
REFERENCES ..............................................