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The penetration value of bitumen is the vertical penetrated measure of the standard needle into the bituminous material under specific weight and temperature.This distance is measured in [...]

The spot test is useful for detecting overheating or cracked bitumen occurs because the actual molecules are thermally broken apart. It is shown whether or not Bitumen has been damaged during [...]

Natural wax is part of practically all bitumen and may in different ways affect bitumen properties. it refers to all found in organic substances that crystallize on cooling and melt on heating. [...]