1、Designation:D 2994 98Standard Test Methods forRubberized Tar1This standard is issued under the fixed designation D 2994;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the y
2、ear of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover the following procedures forrubberized tar:SectionNonimmersed Penetration6Immersed Penetration7Volume and Weight Change9Flow10Softening Point11Viscosi
3、ty12Water Content13Homogeneity141.2 These test methods should not be used in the acceptanceor rejection of materials since their precision statements havenot been determined.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility
4、 of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:D 5 Test Method for Penetration of Bituminous Materials2D 95 Test Method for Water in Petroleum Product
5、s andBituminous Materials by Distillation3D 362 Specification for Industrial Grade Toluene4D 1015 Test Method for Freezing Points of High-PurityHydrocarbons3D 1217 Test Method for Density and Relative Density(Specific Gravity)of Liquids by Bingham Pycnometer3D 1218 Test Method for Refractive Index a
6、nd RefractiveDispersion of Hydrocarbon Liquids3D 2398 Test Method for Softening Point of Bitumen inEthylene Glycol(Ring-and-Ball)5D 2700 Test Method for Knock Characteristics of Motorand Aviation Type Fuels by the Motor Method6E 1 Specification for ASTM Thermometers73.Significance and Use3.1 These t
7、est methods measure the properties of rubberizedtar that determine its suitability as a road binder that is notsensitive to the spillage of fuel oil.4.Apparatus4.1 Melting Unit The unit for melting laboratory samplesshall be of the double-boiler type,employing a high flash-pointoil as the heat trans
8、fer medium.The unit shall be equipped withmechanical agitators in the materials chamber and in the oilbath;and two metal thermometers,of the recalibrating dialtype,in the range from 10 to 177C graduated in 5F(3C)subdivisions.8A melting unit suitable for the purpose is shownin Fig.1.94.2 Oven,thermos
9、tatically controlled,capable of maintain-ing a temperature of 100 6 2F(386 1C).4.3 Water Bath,with mechanical stirrer,thermometer,heat-ing element,and thermostatic controls capable of maintaininga water temperature of 77 6 0.2F(25 6 0.1C).4.4 Viscometer,Brookfield,Model LVF or LVT.4.5 Thermometer,gl
10、ass,in the range from 30 to 200C andgraduated in 0.5C subdivisions conforming to the require-ments forASTM Thermometer 16C given in Specification E 1.4.6 Metal Panels Bright tin-coated panels at least 102mm wide and 152 mm long.The panels shall be free of anyforeign material(dust,oil,etc.),shall not
11、 be warped or bent,and shall be discarded after each flow test.4.7 MoldsDurable metal or plastic molds with an opening60 mm long,40 mm wide,and 4.2 mm deep.4.8 Containers,approximately 54 mm in diameter and 35mm deep.(Three-ounce seamless ointment boxes meet theserequirements.)4.9 Laboratory Balance
12、s,2-kg and 750-g capacity,sensitiveto 0.1 g and 2 mg,respectively.4.10 Oil Bath,with a mechanical stirrer,thermometer,heating element,and thermostatic controls capable of main-taining bath temperatures between 90 6 3C and 1506 3C.1These test methods are under the jurisdiction of ASTM Committee D-4 o
13、nRoad and Paving Materials and are the direct responsibility of SubcommitteeD04.43 on Specifications and Test for Tar and Tar Products.Current edition approved January 10,1998.Published February 1999.Originallypublished as D 2994 71.Last previous editions D 2994 87(1991).2Annual Book of ASTM Standar
14、ds,Vol 04.03.3Annual Book of ASTM Standards,Vol 05.01.4Annual Book of ASTM Standards,Vol 06.04.5Discontinued;see 1984 Annual Book of ASTM Standards,Vol 04.04.6Annual Book of ASTM Standards,Vol 05.04.7Annual Book of ASTM Standards,Vol 14.03.8Model BLM-100 Laboratory Melter,without the oil bath stirre
15、r,available fromthe Berry Corp.,Stone Rd.,Lexington,KY 40503,has been found suitable for thispurpose.9Detailed drawings of the melting unit are available at a nominal charge fromASTM Headquarters,100 Barr Harbor Drive,West Conshohocken,PA 19428.Request Adjunct No.12-429940-00.1AMERICAN SOCIETY FOR T
16、ESTING AND MATERIALS100 Barr Harbor Dr.,West Conshohocken,PA 19428Reprinted from the Annual Book of ASTM Standards.Copyright ASTM4.11 Paint Cans,1-pt capacity from which the lips havebeen removed.5.Preparation of Samples5.1 The portion of the sample selected for all of the testsexcept the water content and homogeneity tests shall weighapproximately 1000 g.Melt the sample in the unit specified in4.1.Stirring shall be continuous during the melting operation.Melting time shall not exceed 60 min.The