1、Designation:D580112Standard Test Method forToughness and Tenacity of Bituminous Materials1This standard is issued under the fixed designation D5801;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
2、 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method describes the procedure for measuringthe toughness and tenacity of bituminous materials.Typically,the test method has been used to
3、characterize elastomermodified asphalts,although values for toughness and tenacitymay be obtained for any type of polymer-modified or non-modified asphalt.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units t
4、hat are provided for information onlyand are not considered standard.1.2.1 ExceptionSample mass is given only in SI units.Sample mass as given in SI units should be regarded asstandard.No other units of sample mass are included in thisstandard.1.3 WarningMercury has been designated by the UnitedStat
5、es Environmental Protection Agency and many state agen-cies as a hazardous material that can cause central nervoussystem,kidney and liver damage.Mercury,or its vapor,may behazardous to health and corrosive to materials.Caution shouldbe taken when handling mercury and mercury containingproducts.See t
6、he applicable Material Safety Data Sheet(MSDS)for details and EPAs website http:/www.epa.gov/mercury/index.htm-for additional information.Users shouldbe aware that selling mercury and/or mercury containingproducts into your state may be prohibited by state law.1.4 This standard does not purport to a
7、ddress all of thesafety concerns,if any,associated with its use.It is theresponsibility 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:2D5 Test Method
8、for Penetration of Bituminous MaterialsD1754 Test Method for Effects of Heat and Air on AsphalticMaterials(Thin-Film Oven Test)D2872 Test Method for Effect of Heat and Air on a MovingFilm of Asphalt(Rolling Thin-Film Oven Test)E1 Specification for ASTM Liquid-in-Glass ThermometersE77 Test Method for
9、 Inspection and Verification of Ther-mometersE644 Test Methods for Testing Industrial Resistance Ther-mometersE1137/E1137M Specification for Industrial Platinum Resis-tance ThermometersE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision Liquids3.Summary of Test Metho
10、d3.1 Atension head of specified size and shape is pulled froman asphalt sample at a rate of 20 in./min(508 mm/min).Acontinuous record of the force versus elongation curve is madeand used to calculate the toughness and the tenacity of thesample.The test is run at room temperature 77 6 5F(25 63C),afte
11、r the sample has been subjected to a specifiedtemperature history.3.2 Toughness is defined in this procedure as the total workrequired to completely separate the tension head from thesample under the specified test conditions.Tenacity is ameasure of the increasing force as the sample is stretched pa
12、stthe initial peak,and may indicate the type and amount ofpolymer used to modify the asphalt.It is defined as the workrequired to stretch the material after the initial resistance isovercome.4.Significance and Use4.1 This test method is useful in confirming that an asphaltcement has been modified wi
13、th a material that provides a1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.44 onRheological Tests.Current edition approved Dec.1,2012.Published May 2013.Originallyapproved as Proposal P 243 in 1994.L
14、ast previous edition approved in 2006 asD5801 95(2006)1.DOI:10.1520/D5801-12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe AS
15、TM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 significant elastomeric component.Elastomer modified as-phalts can be characterized by their ability to be stretched to alarge elongation while at the same time resisting furthers
16、tretching.Toughness and tenacity are two parameters formeasuring this ability.5.Apparatus5.1 Sample ContainerA metal,cylindrical,flat bottomcontainer with a nominal inside diameter of 218in.(54.0 mm)and a nominal depth of 138in.(34.9 mm)shall be used to holdthe sample.Containers known as tin boxes or seamlessointment boxes with a 3-oz capacity meet these requirements.5.2 Tension HeadThe tension head shall consist of apolished metal,hemispherical head with a716in.(11.1 mm)radius,which is integral