1、Designation:D5849/D5849M07(Reapproved 2013)1Standard Test Method forEvaluating Resistance of Modified Bituminous RoofingMembrane to Cyclic Fatigue(Joint Displacement)1This standard is issued under the fixed designation D5849/D5849M;the number immediately following the designation indicates theyear o
2、f original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEUnits information was editorially corrected in August 2013.1.Scope1.1
3、This test method determines the effect of constant cyclicdisplacement on polymer-modified bituminous membranespecimens.In this test method,a relatively low travel rate ofcycling is used and the material is tested for a specified numberof cycles under conditions of increased amplitude or lowertempera
4、ture.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith
5、 the standard.1.3 This standard does not purport to address 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.Re
6、ferenced Documents2.1 ASTM Standards:2D41 Specification for Asphalt Primer Used in Roofing,Dampproofing,and WaterproofingD1079 Terminology Relating to Roofing and WaterproofingD5147 Test Methods for Sampling and Testing ModifiedBituminous Sheet Material2.2 Canadian General Standards Board Method:3CG
7、SB 37-GP-56M Standard for Membrane,Modified,Bituminous,Prefabricated,and Reinforced for Roofing3.Terminology3.1 For definitions of terms used in this test method,refer toTerminology D1079.4.Summary of Test Method4.1 This test method measures the ability of an unagedpolymer-modified bituminous membra
8、ne material to resistdeterioration during 500 cycles(Note 1)at predeterminedtemperature and cycle-amplitude conditions.If the specimenpasses the test under the selected conditions,the severity of thetest is raised by either lowering the temperature or increasingthe amplitude of the cycle,or both(see
9、 Table 1).Similarly,heat-aged specimens are subjected to 200 cycles(Note 1)underthe same conditions of temperature and cycle-amplitude.Testthe membrane until failure or until Test Condition No.5 isachieved.NOTE1Other numbers of cycles may be used depending on the reasonfor conducting the test,for ex
10、ample,to determine the number of cyclesnecessary to produce failure.5.Significance and Use5.1 This test method provides data on classifying polymer-modified bituminous membranes by their performance relatedto the fatigue conditions to which they are subjected.5.2 This test method is applicable to te
11、sting specimensconsisting of a single ply of the polymer-modified bitumenmaterial or a multiple-ply composite that includes the polymer-modified bitumen material.5.3 This test method is conducted on both unaged andheat-aged specimens to determine the effect of heat exposureon the membrane materials
12、ability to resist deterioration fromcyclic strain.This test method may also be conducted onspecimens subjected to other laboratory exposure conditionsthat are not specified herein.6.Apparatus6.1 Any fatigue apparatus capable of producing cyclic strainat the selected test temperature is suitable.The
13、apparatus shallbe capable of applying sufficient load to the specimens toachieve the specified displacement.The apparatus shall be1This test method is under the jurisdiction ofASTM Committee D08 on Roofingand Waterproofingand is the direct responsibility of Subcommittee D08.04 on Felts,Fabrics and B
14、ituminous Sheet Materials.Current edition approved August 1,2013.Published August 2013.Originallyapproved in 1995.Last previous edition approved in 2007 as D5849 07.DOI:10.1520/D5849_D5849M-07R13E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at
15、 serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from the Canadian General Standards Board(CGSB),Gatineau,Canada,K1A 1G6.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA
16、19428-2959.United States1 capable of changing cycle amplitude depending on the selectedconditions.It has been found that an apparatus using acam-driven mechanism is suitable for this purpose.The am-plitude of the cycle is altered by changing the lift of the cam.6.2 The apparatus shall be capable of cycling the specimensat 16 mm/h 0.011 in./min.6.3 Two concrete slabs(Note 2),150 by 150 by 50-mm 6by 6 by 2-in.minimum thickness are attached to the fatigueapparatus such that one moves continuously b