The specimens to be tested are kept immersed under water in a thermostatically controlled water bath maintained at 600 ± 10C for 30 to 40 minutes. The specimens are taken out one by one, placed in the Marshall test head and the Marshall stability value (maximum load carried in kg. before failure) and the flow value (the deformation the specimen undergoes during loading up to the maximum load in 0.01 mm units) are noted. The corrected Marshall stability value of each specimen is determined by applying the appropriate correction factor, if the average height of the specimen is not exactly 63.5 mm. The correction factors are given in Table.
Correction Factors for Stability and Flow Value
| Volume of Specimen in Cubic Centimeters | Approximate Thickness of Specimen in mm | Correction Factors |
| 457-470 | 57.1 | 1.19 |
| 471-482 | 58.7 | 1.14 |
| 483-495 | 60.3 | 1.09 |
| 496-508 | 61.9 | 1.04 |
| 509-522 | 63.5 | 1.00 |
| 523-535 | 65.1 | 0.96 |
| 536-546 | 66.7 | 0.93 |
| 547-559 | 68.3 | 0.89 |
| 560-573 | 69.9 | 0.86 |
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