Table of Contents
Table of Figures5
1.Soil Moisture Content Test7
2.Particle Size Distribution Test9
3.The Atterberg Limits13
4.Unconfined compressive strength test18
5.Moisture/Density relationship Test20
6.Field Density by Sand Replacement Test23
7.California Bearing Ratio Test27
APPENIDIX A1: Lab Worksheets32
APPENIDIX 1: Classification report33
Table of Figures
Figure 1: Casagrande apparatus13
Figure 2: Standard liquid limit apparatus14
Figure 3: grooving tool14
Figure 4: shrinkage moulds14
Figure 5: Sand cone pouring tool23
Figure 6: Motorised CBR Machine27
Soils can be regarded as engineering material in the geotechnical sense, they are naturally occurring materials which more often than not have to be used in their natural conditions, therefore the physical properties of soils should be determined before being used for engineering purpose. Soil samples are usually taken to laboratory to be tested, and these tests can be divided into two main categories:
1. Classification tests, which indicate the general type of soil and the engineering category to which it belongs.
2. Tests for the assessment of engineering properties, such as shear strength, compressibility and permeability.
Soil Moisture Content Test
This test is to determinate the moisture content of a soil as a percentage of its oven-dried weight. The method is based on removing soil moisture content by oven-drying a soil sample until the weight remains unchangeable. The moisture content of the soil sample can be calculated from the different weight before and after the initial drying.
2 Australian Standards
Limitations of this test are:
• This test cannot be done accurately on clay and other cohesive materials
• The oven must stay at a specific temperature ranges.
• The samples are not allowed to cool prior to weighing, otherwise will be required for certain balances.
The following apparatus is required to do this test:
• A drying oven complying with AS 1289.0.
• A heat-resistant and corrosion-resistant container.