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CEN
CEN/TC 336 Bituminous binders
European Norm
75.140 Waxes, bituminous materials and other petroleum products | 91.100.50 Binders. Sealing materials
Draft
This document specifies a method for the determination of the softening point of bitumen and bituminous binders in the range of 28 °C to 150 °C.
The method described also applies to bituminous binders that have been recovered from bituminous mixes, e.g. by extraction according to EN 12697 3 [1].
The change from mercury thermometers to electronic temperature devices has revealed that the temperature definition in the mercury thermometer has not been precise enough to make a correct, unbiased transfer to electronic devices. Care should be taken for softening points ring and ball above 100 °C as the condition may have changed from previous practice to present days testing equipment. Below approximately 100 °C the difference in temperature readings between electronic and mercury stem thermometer is acceptable compared to the repeatability of this test method.
PUBLISHED
EN 1427:2015
IN_DEVELOPMENT
prEN 1427
40.20
DIS ballot initiated: 12 weeks
Mar 7, 2024