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MATERIALS TESTING

Soil & Gravel

Our bread and butter.

Our accredited facilities perform all manner of soil testing, from gradings, durabilities and densities to MOD’s and CBR’s, according to any standard you require.

We are ready to provide you with advice, insight or a quote.

Send us a message here or contact us at 066 299 1985.

Soil & Gravel

Soil & Gravel

SERVICE OFFERING

01


Wet Particle Size Analysis

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.

02


Liquid Limit, Plasticity Index & Linear Shrinkage

Collectively referred to as the Atterberg limits, this determines the amount of moisture required to place the material in a liquid or plastic state.

03


Oven Drying by Constant Mass

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.

04


MDD and OMC

This method determines the maximum dry density (MDD) and optimum moisture content (OMC) of material. GR31 covers the addition of cementitious stabilizing agent.

05


California Bearing Ratio (CBR)

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.

06


Laboratory Mixed Cementitious Stabilised Materials

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.

07


Unconfined Compressive Strength (UCS)

UCS results can be used to determine compliance to specifications for compressive strength of stabilized gravels.

08


Indirect Tensile Strength (ITS)

Indirect tensile strength can be used to determine compliance to specification for indirect tensile strength.

09


Wet-dry Durability

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.

10


Dynamic Probe Super Heavy (DPSH)

A sacrificial cone is driven into soil to a depth of up to 20 meters to determine the expected bearing capacity of soils.

11


Cored specimens

This method is used to extract field specimens (cores) of stabilized material for laboratory testing.

12


Sand replacement

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.

13


Dynamic cone penetrometer (DCP)

Used to determine the resistance of the material as well as to interpolate the expected California Bearing Ratio.

14


Plate load test

Used to determine the ultimate bearing capacity of soil and the probable settlement under a given load.

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