ASTM-D36 › Historical Revision Information
Standard Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)
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Scope
1.1 This test method covers the determination of the softening point of bitumen in the range from 30 to 157°C [86 to 315°F] using the ring-and-ball apparatus immersed in distilled water [30 to 80°C] or USP glycerin (above 80 to 157°C).
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Significance and Use
4.1 Bitumens are viscoelastic materials without sharply defined melting points; they gradually become softer and less viscous as the temperature rises. For this reason, softening points must be determined by an arbitrary and closely defined method if results are to be reproducible.
4.2 The softening point is useful in the classification of bitumens, as one element in establishing the uniformity of shipments or sources of supply, and is indicative of the tendency of the material to flow at elevated temperatures encountered in service.
Keywords
asphalt; ball and ring; bitumen; coal tar; softening point; ICS Number Code 91.100.50 (Binders. Sealing materials)
To find similar documents by ASTM Volume:
04.04 (Roofing and Waterproofing)
To find similar documents by classification:
91.100.50 (Binders. Sealing materials Including geomembranes, asphalts for buildings, etc.)
To find similar documents by Federal Supply Class Code:
FSC 5610 (Mineral Construction Materials, Bulk)
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Document Number
ASTM-D36/D36M-14
Revision Level
2014 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Aug. 1, 2014
Document Type
Test Method
Page Count
5 pages
Committee Number
D08.03