ASTM D5683D5683M-95(2017) Standard Test Method for Flexibility of Roofing and Waterproofing Materials and Membranes.pdf

1、Designation: D5683/D5683M 95 (Reapproved 2017)Standard Test Method forFlexibility of Roofing and Waterproofing Materials andMembranes1This standard is issued under the fixed designation D5683/D5683M; the number immediately following the designation indicates theyear of original adoption or, in the c

2、ase 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.1. Scope1.1 This test method measures the flexibility of roofing orwaterproofing sheet materials or m

3、embranes by bending thetest material over a block containing arcs of specific radii at astandard temperature.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 shal

4、l be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevel

5、opment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D1079 Terminology Relating to Roofing and Waterproofing3. Terminology3.1 For definitions of terms used in this t

6、est method, refer toTerminology D1079.4. Summary of Test Method4.1 Bend the five specimens of roofing or waterproofingsheet materials or membrane, conditioned at 4.4C 40F, (seeNote 1), over a block (see Fig. 1) designed to provide arcs ofequal length with 6-mm 14-in., 13-mm 12-in., 19-mm34-in., and

7、25-mm 1-in. radii, and the smallest radius isreported where cracking is not observed in any specimen.NOTE 1Other test temperatures may be used in addition to the testsrequired at 4.4C 40F, and refrigerated conditioning chambers may beused instead of the water bath specified. Follow procedures outlin

8、ed inSection 8, if refrigerated chamber is utilized; however, the plastic bag maybe omitted.5. Significance and Use5.1 This test method is designed to aid those interested inthe engineering properties of roofing and waterproofing sheetmaterials and membranes.5.2 This test method enables a researcher

9、 to measure therelative flexibility of roofing and waterproofing sheet materialsand membranes under standard conditions in the laboratory.5.3 The data obtained from this test method will not permitprediction of the service life of a membrane. Membraneflexibility is important during application, and

10、changes inflexibility are believed to be linked to the performance ofroofing and waterproofing membranes, but the actual linkbetween test data and performance is unknown and is depen-dent on the materials and exposure.6. Apparatus6.1 Water BathA bath with the capacity of at least 10 L2.5 gal and cap

11、able of maintaining a temperature of 4.4 60.1C 40 6 0.2F.6.2 Polyethylene BagsA sealable plastic bag for condi-tioning each group of test specimens. Commercial 1-galsealable polyethylene scrap or food storage bags can performthis function.6.3 Test BlockThe test block (see Fig. 1) may be madefrom any

12、 hard durable material that conforms to the dimen-sions shown in Fig. 1. It is designed to provide equal arclengths for arcs with 6-mm 14-in., 13-mm 12-in., 19-mm34-in., and 25-mm 1-in. radii.7. Sampling7.1 This test method requires a total of one 152 by 305-mm6 by 12-in. sample from the sheet mater

13、ial or membrane.1This test method is under the jurisdiction of ASTM Committee D08 on Roofingand Waterproofing and is the direct responsibility of Subcommittee D08.20 onRoofing Membrane Systems.Current edition approved May 1, 2017. Published May 2017. Originallyapproved in 1995. Last previous edition

14、 approved in 2011 as D5683/D5683M 95(2011)1. DOI: 10.1520/D5683_D5683M-95R17.2For 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 ont

15、he ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDeve

16、lopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.17.2 Cut five 25 by 152-mm 1 by 6-in. specimens in themachine direction (the length) and five 1 by 6-in. specimens inthe cross direction (the width) of ea

17、ch sample.8. Procedure8.1 Exclude as much air as possible and seal each group offive specimens in a plastic bag.8.2 Condition the specimens in each plastic bag in a waterbath at 4.4 6 0.1C 406 0.2F for at least 1 h.8.3 One at a time, remove the specimens from the condi-tioning medium. Quickly clamp

18、a narrow end of the specimento the test block (see Fig. 1) with thumb pressure on the slidingangle clamp, with the side most likely to crack (usually the sideintended for exposure to the weather) of the sample upward.Bend the specimen over the test block with a smooth move-ment requiring 2 6 1 s, an

19、d hold in place over the radius bendfor 15 6 1 s. Record the smallest radius where cracking is notevident to the unaided eye. For the purposes of this testmethod, any surface crack longer than 3 mm 18 in. isconsidered failure at the radius where the crack appears (seeNote 2).NOTE 2After initial test

20、ing, tested specimens may not be utilized forsuccessive testing at lower or higher temperatures.9. Report9.1 Report the following information:9.1.1 Complete specimen identification, orientation, and thesmallest radius where none of the test specimens cracked. Thereport assumes testing at 4.4C 40F.9.

21、1.2 Report the results of testing at any additional tempera-ture.9.2 If none of the specimens cracked, report flexibility “lessthan 6-mm 14-in. radius”.9.3 If any test specimens break at 25 mm 1 in. or prior totesting, report “too brittle for test.”10. Precision and Bias10.1 Precision:10.1.1 Repeata

22、bilityDuplicate values by the same opera-tor shall not be considered suspect unless they differ by morethan6mm14 in.FIG. 1 Test BlockD5683/D5683M 95 (2017)210.1.2 ReproducibilityThe values reported by twolaboratories, representing the arithmetic average of fivedeterminations, shall not be considered

23、 suspect unless theydiffer by more than 13 mm 12 in.10.2 BiasThe flexibility measured by this test method hasno bias, because the value is only determined by this testmethod.11. Keywords11.1 cracking resistance; flexibility; roofing membrane; wa-terproofing membraneASTM International takes no positi

24、on respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility

25、.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM

26、International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address sh

27、own below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 95 (2017)3