TBT-4508C is designed and made as per national standard for Ductility of Bitumen and Asphalt Ductility Test, also accords to ASTM D113 Standard Test Method for Ductility of Bituminous Materials.

It is suitable to determine the distance to which it will elongate before breaking when two ends of a briquette specimen of the material are pulled apart at a specified speed and at a specified temperature.

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