ASTM D5683-1995(2005) Standard Test Method for Flexibility of Roofing and Waterproofing Materials and Membranes《屋顶材料 防水材料和薄膜挠性的标准试验方法》.pdf

1、Designation: D 5683 95 (Reapproved 2005)Standard Test Method forFlexibility of Roofing and Waterproofing Materials andMembranes1This standard is issued under the fixed designation D 5683; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revis

2、ion, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 membranes by

3、 bending thetest material over a block containing arcs of specific radii at astandard temperature.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.2. Referenced Documents2.1 ASTM Standards:2D 1079 Terminology Relating to Roo

4、fing, Waterproofing,and Bituminous Materials3. Terminology3.1 For definitions of terms used in this test method, refer toTerminology D 1079.4. 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 bloc

5、k (see Fig. 1) designed to provide arcs ofequal length with 6-mm (14-in.), 13-mm (12-in.), 19-mm(34-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

6、), and refrigerated conditioning chambers may beused instead of the water 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 engineer

7、ing properties of roofing and waterproofing sheetmaterials and membranes.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

8、 not permitprediction of the service life of a membrane. Membraneflexibility 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-den

9、t on the materials and exposure.6. Apparatus6.1 Water BathA bath with the capacity of at least 10 L(2.5 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 polyethy

10、lene scrap or food storage bags can performthis function.6.3 Test BlockThe test 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-mm(34-in.), and 25

11、-mm (1-in.) radii.7. Sampling7.1 This test method requires a total of one 152 by 305-mm(6 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 eac

12、h 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

13、 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.1This test method is under the jurisdiction of ASTM Committee D08 on Roofingand Wa

14、terproofing and is the direct responsibility of Subcommittee D08.20 onRoofing Membrane Systems.Current edition approved Dec. 1, 2005. Published December 2005. Originallyapproved in 1995. Last previous edition approved in 1999 as D 5683 95 (1999)e1.2For referenced ASTM standards, visit the ASTM websi

15、te, 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 ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United State

16、s.Bend the specimen over the test block with a smooth move-ment requiring 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.) isconsid

17、ered failure at the radius where the crack appears (seeNote 2).NOTE 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 ra

18、dius where none of the test specimens cracked. Thereport assumes testing 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

19、 totesting, report “too brittle for test.”10. Precision and Bias10.1 Precision:10.1.1 RepeatabilityDuplicate values by the same opera-tor shall not be considered suspect unless they differ by morethan6mm(14 in.).10.1.2 ReproducibilityThe values reported by two labora-tories, representing the arithme

20、tic average of five determina-tions, shall not be considered suspect unless 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 memb

21、rane; wa-terproofing membraneFIG. 1 Test BlockD 5683 95 (2005)2ASTM International takes no position 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

22、 patent rights, and the riskof infringement of such rights, are entirely their own responsibility.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

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24、air hearing you shouldmake your views known to the ASTM Committee on Standards, 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).D 5683 95 (2005)3