ASTMD36-95

Designation:D 36-95AMERICAN SOCIETY FOR TESTING AND MATERIALS100 Barr Habor Dr.,West Conshohocken,PA 19428Reprnted from the Annual Book ofASTM Standands.Copyright ASTMStandard Test Method forSoftening Point of Bitumen(Ring-and-Ball Apparatus)1This standard is issued under the fixed designation D 36;the number immediately following the designation indicates the year oforiginaladoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscriptepsilon (e)indicates an editorial change since the last revision or reapproval.1.Scopeviscous as the temperature rises.For this reason,softening1.1 This test method covers the determination of the soft-points must be determined by an arbitrary and closely defi nedening point of bitumen in the range from 30 to 157C(86 tomethod if results are to be reproducible.315F)using the ring-and-ball apparatus immersed in distilled4.2 The softening point is useful in the classifi cation ofwater (30 to 80C),USP glycerin (above 80 to 157C),orbitumens,as one element in establishing the uniformity ofethylene glycol (30 to 110C).shipments or sources of supply,and is indicative of the1.2 The values stated in SI units are to be regarded as thetendency of the material to flow at elevated temperaturesstandard.encountered in service.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is the5.Apparatusresponsibility of the user of this standard to establish appro-5.1 Rings-Two square-shouldered brass rings conformingpriate safety and health practices and determine the applica-to the dimensions shown in Fig.1(a).bility of regulatory limitations prior to use.5.2 Pouring Plate-A flat,smooth,brass plate approxi-mately 50 by 75 mm(2 by 3 in.)2.Referenced Documents5.3 Balls-Two steel balls,9.5 mm (s in.)in diameter,each2.1 ASTM Standards:having a mass of 3.500.05 g.C 670 Practice for Preparing Precision and Bias Statements5.4 Ball-Centering Guides-Two brass guides for centeringfor Test Methods for Construction Materials2the steel balls,one for each ring,conforming to the generalD 92 Test Method for Flash and Fire Points by Clevelandshape and dimensions shown in Fig.1 (b).Open Cup*5.5 Bath-A glass vessel,capable of being heated,not lessD 140 Practice for Sampling Bituminous Materialsthan 85 mm in inside diameter and not less than 120 mm inD 3461 Test Method for Softening Point of Asphalt anddepth from the bottom of the flare.Pitch (Mettler Cup-and-Ball Method)sE1 Specifi cation for ASTM Therometers5NorE 1-An 800-mL,low-form Griffin beaker of heat-resistant glassmeets this requirement.3.Summary of Test Method5.6 Ring Holder and Assembly-A brass holder designed to3.1 Two horizontal disks of bitumen,cast in shoulderedsupport the two rings in a horizontal position,conforming tobrass rings,are heated at a controlled rate in a liquid bath whilethe shape and dimensions shown in Fig.1 (c),supported in theeach supports a steel