Importance of Softening point of bitumen

Softening Point of Bitumen: The softening point of bitumen is a temperature at which the bitumen attains particular degree of softening. It is a temperature at which the bitumen sample can no longer support the weight of a 3.50 gm steel ball.


Significant of Softening point test: Bitumen is widely used in road construction work. So it is important to know if it can withstand hot weather especially in tropical countries. This test is related with suitability of bitumen as a road construction material in a particular climate. Normally bitumen starts flowing at its softening point, so if the softening point of a particular bitumen is exceed by the atmospheric temperature in a particular climatic condition, then the bitumen will be unsuitable for road construction work at that particular climate.

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