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Used in material classification and to determine compliance to the particle size distribution of gravels to specified standards. Required to obtain fines for Atterburg limits.
Collectively referred to as the Atterberg limits, this determines the amount of moisture required to place the material in a liquid or plastic state.
Moisture can have a significant effect on the behavior of material. This is also used to ensure oven dried samples attain constant mass when dried.
This method determines the maximum dry density (MDD) and optimum moisture content (OMC) of material. GR31 covers the addition of cementitious stabilizing agent.
Samples are prepared in accordance to SANS 3001 GR30, at 100%, 95% and 90% compaction. The CBR is determined by penetrating a 50mm diameter piston into the material after being soaked in water.
In-laboratory testing of mix design properties can be used to determine the maximum dry density, optimum moisture content, indirect tensile strength, unconfined compressive strength as well as wet and dry durability.
UCS results can be used to determine compliance to specifications for compressive strength of stabilized gravels.
Indirect tensile strength can be used to determine compliance to specification for indirect tensile strength.
Results obtained using this test can give an indication of the durability or expected degradation of the material being tested. GR56 is specifically for mechanical brushing.
A sacrificial cone is driven into soil to a depth of up to 20 meters to determine the expected bearing capacity of soils.
This method is used to extract field specimens (cores) of stabilized material for laboratory testing.
The sand replacement method is used to determine the in-situ density of a layer without a nuclear density gauge, and is used in areas where the nuclear density method is unsuitable.
Used to determine the resistance of the material as well as to interpolate the expected California Bearing Ratio.
Used to determine the ultimate bearing capacity of soil and the probable settlement under a given load.