Marshall Stability and Flow Test is basically one portion of the Marshall Mix Design process beside Void ratios and Density calculations as other processes. Marshall Stability Test gives an idea about the sustainability and strength of the asphalt mix of various proportions under the dynamic loading of the traffic.
As per the standard procedure for the Marshall Stability test, the sample is first prepared having specific amount of aggregate of specific gradation along with some suitable amount of bitumen or binder content as stated here
|Marshall Stability Apparatus|
After the preparation of the sample and determination of the properties mentioned above the Sample is taken for the Marshall Stability and Flow test.
Marshal Stability and Flow Test
|Marshall Sample Extractor|
The Total Maximum load in kN that causes the failure of the specimen is taken as Marshall Stability. The stability value is also corrected for volume it will be explained later.
The total amount of deformation in units of 0.25 mm that occurs at maximum load is called flow value.