1、Designation: D5683/D5683M 95 (Reapproved 2011)1Standard 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
2、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 revised in February 2011.1. Scope1.1 This test method measure
3、s the flexibility of roofing orwaterproofing sheet materials or membranes 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 ineac
4、h 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 the standard.2. Referenced Documents2.1 ASTM Standards:2D1079 Terminology Relating to Roofing and Waterproofing3. Terminology3
5、1 For definitions of terms used in this test 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-
6、mm 14-in., 13-mm 12-in., 19-mm34-in., and 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 wate
7、r bath specified. Follow procedures outlined 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
8、5.2 This test method enables a researcher 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. Membraneflexibi
9、lity is important during application, and 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 th
10、e capacity of at least 10 L2.5 gal and capable 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 t
11、est block (see Fig. 1) may be madefrom any 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
12、mm6 by 12-in. sample from the sheet material or membrane.7.2 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 each sample.8. Procedure8.1 Exclude as much air as possible and seal each group offive spec
13、imens 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.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 Syste
14、ms.Current edition approved Jan. 1, 2011. Published February 2011. Originallyapproved in 1995. Last previous edition approved in 2005 as D5683 95 (2005).DOI: 10.1520/D5683-95R11E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.or
15、g. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8.3 One at a time, remove the specimens from the condi-tioning me
16、dium. Quickly clamp 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 r
17、equiring 2 6 1 s, and 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
18、 2After initial testing, 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 te
19、sting at 4.4C 40F.9.1.2 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 Prec
20、ision:10.1.1 RepeatabilityDuplicate values by the same opera-tor shall not be considered suspect unless they differ by morethan6mm14 in.10.1.2 ReproducibilityThe values reported by two labora-tories, representing the arithmetic average of five determina-tions, shall not be considered suspect unless
21、they differ bymore 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 membraneFIG. 1 Test BlockD5683/D5683M 95 (2011)12ASTM Inte
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24、uld be addressed to ASTM 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 Sta
25、ndards, at the address shown 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 ASTM website (www.astm.org/COPYRIGHT/).D5683/D5683M 95 (2011)13
