ASTM D5849/D5849M-07(2020)

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: D5849/D5849M − 07 (Reapproved 2013) D5849/D5849M − 07 (Reapproved
2020)
Standard Test Method for
Evaluating Resistance of Modified Bituminous Roofing
Membrane to Cyclic Fatigue (Joint Displacement)
This standard is issued under the fixed designation D5849/D5849M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
ε NOTE—Units information was editorially corrected in August 2013.
1. Scope
1.1 This test method determines the effect of constant cyclic displacement on polymer-modified bituminous membrane specimens.
In this test method, a relatively low travel rate of cycling is used and the material is tested for a specified number of cycles under
conditions of increased amplitude or lower temperature.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
D41D41/D41M Specification for Asphalt Primer Used in Roofing, Dampproofing, and Waterproofing
D1079 Terminology Relating to Roofing and Waterproofing
D5147D5147/D5147M Test Methods for Sampling and Testing Modified Bituminous Sheet Material
2.2 Canadian General Standards Board Method:
CGSB 37-GP-56M Standard for Membrane, Modified, Bituminous, Prefabricated, and Reinforced for Roofing
3. Terminology
3.1 For definitions of terms used in this test method, refer to Terminology D1079.
This test method is under the jurisdiction of ASTM Committee D08 on Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.04 on Felts,
Fabrics and Bituminous Sheet Materials.
Current edition approved August 1, 2013Oct. 1, 2020. Published August 2013October 2020. Originally approved in 1995. Last previous edition approved in 20072013
ɛ1
as D5849 – 07.D5849/D5849M – 07 (2013) . DOI: 10.1520/D5849_D5849M-07R13E01.10.1520/D5849_D5849M-07R20.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from the Canadian General Standards Board (CGSB), Gatineau, Canada, K1A 1G6.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D5849/D5849M − 07 (2020)
4. Summary of Test Method
4.1 This test method measures the ability of an unaged polymer-modified bituminous membrane material to resist deterioration
during 500 cycles (Note 1) at predetermined temperature and cycle-amplitude cycle amplitude conditions. If the specimen passes
the test under the selected conditions, the severity of the test is raised by either lowering the temperature or increasing the
amplitude of the cycle, or both (see Table 1). Similarly, heat-aged specimens are subjected to 200 cycles (Note 1) under the same
conditions of temperature and cycle-amplitude. cycle amplitude. Test the membrane until failure or until Test Condition No. 5 is
achieved.
NOTE 1—Other numbers of cycles may be used depending on the reason for conducting the test, for example, to determine the number of cycles necessary
to produce failure.
5. Significance and Use
5.1 This test method provides data on classifying polymer-modified bituminous membranes by their performance related to the
fatigue conditions to which they are subjected.
5.2 This test method is applicable to testing specimens consisting of a single ply of the polymer-modified bitumen material or a
multiple-ply composite that includes the polymer-modified bitumen material.
5.3 This test method is conducted on both unaged and heat-aged specimens to determine the effect of heat exposure on the
membrane material’s ability to resist deterioration from cyclic strain. This test method may also be conducted on specimens
subjected to other laboratory exposure conditions that are not specified herein.
6. Apparatus
6.1 Any fatigue apparatus capable of producing cyclic strain at the selected test temperature is suitable. The apparatus shall be
capable of applying sufficient load to the specimens to achieve the specified displacement. The apparatus shall be capable of
changing cycle amplitude depending on the selected conditions. It has been found that an apparatus using a cam-driven mechanism
is suitable for this purpose. The amplitude of the cycle is altered by changing the lift of the cam.
6.2 The apparatus shall be capable of cycling the specimens at 16 mm/h [0.011 in./min].
TABLE 1 Test Conditions
Test Test Initial Gap Cycle
Cycles/h
Condition Temperature Setting Amplitude
1 23 ± 1°C 1.0 ± 0.05 mm 1.0 mm 8
[73 ± 2°F] [0.04± 0.002 in.] [0.04 in.]
2 0 ± 1°C 1.0± 0.05 mm 1.0 mm 8
[32 ± 2°F] [0.04± 0.002 in.] [0.04 in.]
3 0 ± 1°C 2.0 ± 0.05 mm 2.0 mm 4
[32± 2°F] [0.08± 0.002 in.] [0.08 in.]
4 −10 ± 1°C 2.0 ± 0.05 mm 2.0 mm 4
[14 ± 2°F] [0.08± 0.002 in.] [0.08 in.]
5 −20± 1°C 2.0 ± 0.05 mm 2.0 mm 4
[−4 ± 2°F] [0.08 ± 0.002 in.] [0.08 in.]
TABLE 1 Test Conditions
Test Test Initial Gap Cycle
Cycles/h
Condition Temperature Setting Amplitude
1 23 ± 1 °C 1.0 ± 0.05 mm 1.0 mm 8
[73 ± 2 °F] [0.04 ± 0.002 in.] [0.04 in.]
2 0 ± 1 °C 1.0 ± 0.05 mm 1.0 mm 8
[32 ± 2 °F] [0.04 ± 0.002 in.] [0.04 in.]
3 0 ± 1 °C 2.0 ± 0.05 mm 2.0 mm 4
[32 ± 2 °F] [0.08 ± 0.002 in.] [0.08 in.]
4 −10 ± 1 °C 2.0 ± 0.05 mm 2.0 mm 4
[14 ± 2 °F] [0.08 ± 0.002 in.] [0.08 in.]
5 −20 ± 1 °C 2.0 ± 0.05 mm 2.0 mm 4
[−4 ± 2 °F] [0.08 ± 0.002 in.] [0.08 in.]
D5849/D5849M − 07 (2020)
6.3 Two concrete slabs (Note 2), 150 by 150 by 50-mm 50 mm [6 by 6 by 2-in.] 2 in.] minimum thickness are attached to the
fatigue apparatus such that one moves continuously back and forth in relation to the other. The gap between the slabs forms the
joint over which the specimen cycling occurs. Alternatively, two wooden panels 150 by 150 by 38 mm [6 by 6 by 1.5 in.] or steel
plates 150 by 150 by 6 mm [6 by 6 by 0.25 in.] minimum may be used. The subs
...