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What are the standards for softening point for different of bitumens?
Wiki User
∙ 11y ago
The softening point is defined as the temperature at which a bitumen sample can no longer support the weight of a 3.5-g steel ball. Although it is commonly used in Europe, it is mostly used for roofing asphalts in the U.S. Basically, two horizontal disks of bitumen, cast in shouldered brass rings (Figure 1), are heated at a controlled rate in a liquid bath while each supports a steel ball. The softening point is reported as the mean of the temperatures at which the two disks soften enough to allow each ball, enveloped in bitumen, to fall a distance of 25 mm (1.0 inch)
Wiki User
∙ 11y ago
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What is the softening point of bitumen?
"Softening point:The temperature in degrees C at which a bitumen attains a particular degree of softness with reference to test conditions prescribed by BS EN 1427 or equivalent."Refined Bitumen Association: Glossary of Termswww.bitumenuk.com/bitumen-glossaryofterms.asp [Accessed 2009]
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