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  • ASTM D36 Softening Point Of Bitumen

    ASTM D36 Softening Point Of Bitumen

    Two horizontal disks of bitumen, cast in shouldered brass rings, 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 in.)

    ASTM D36 Ring and Ball Method Ring and Ball Apparatus
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