1、Designation: D 7105 06Standard Test Method forDetermining the Adhesive and Cohesive Strength BetweenMaterials in Roofing or Waterproofing Membranes andSystems1This standard is issued under the fixed designation D 7105; the number immediately following the designation indicates the year oforiginal ad
2、option or, in the case of revision, 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 force needed to causeseparation of the
3、components of a roofing or a waterproofingmembrane system normal (perpendicular) to the plane of themembrane. The separation may be adhesive at the weakestbond, or cohesive within the weakest material. If the failure iscohesive, the adhesive strength is greater than the cohesivestrength.1.2 The valu
4、es stated in SI units are regarded as standard.The values given in parentheses are for information only.1.3 The 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 h
5、ealth practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 312 Specification for Asphalt Used in RoofingD 1079 Terminology Relating to Roofing and Waterproof-ing3. Terminology3.1 Definitions:3.1.1 See D 1079 for definitions of
6、 terms used in this testmethod.4. Summary of Test Method4.1 This test method subjects specimens from the laboratoryprepared or field samples to a force perpendicular to the planeof the membrane. The test measures:4.1.1 The cohesive strength of an adhesive layer whenseparation takes place within the
7、adhesive layer,4.1.2 The adhesive strength when the separation takes placeat an adhered surface, or4.1.3 The cohesive strength of the weakest material whenthe separation takes place within a material other than anadhesive.5. Significance and Use5.1 This test method is useful to define the force need
8、ed tocause separation of the roofing or waterproofing system orcomponents perpendicular to the plane of the system, and todefine the weakest plane in the system.6. Apparatus6.1 Testing Machinea universal testing machine withautomatic load and strain equipment and a constant speed crosshead movement
9、of 0.8 mm/s (2 in./min.) 61%.6.2 Mounting Clipsthe specimen mounting clips (forsmall specimens) are 50 mm (2 in.) square perforated galva-nized steel, 0.5 mm (0.020 in.) thick, with at least a 75 mm (3in.) long steel pin 2.7 mm (12 gauge) diameter. The pin shall befastened to the center of the plate
10、 perpendicular to the plane ofthe plate.6.3 Mounting BlocksThe wood or metal specimen blocks(for larger specimens) are 150 mm (6 in.) square and 13 to 32mm (12 to 1-14 in.) thick (depending on the force to bemeasured), equipped with a hook in the center of each block topermit attachment in the testi
11、ng machine. If desired, roundblocks with at least a 45 mm (134 in.) diameter and with acentral hook shall not be prohibited.6.4 Clip or Mounting AdhesiveHot, steep asphalt D 312Type III has been effective for many roofing materials. Forsome materials, other adhesives shall not be prohibited. Con-sid
12、er using the adhesive recommended by the manufacturer ofthe materials to be tested. The adhesive shall be quick settingand shall form a strong bond between the specimen and themounting clips or blocks.7. Procedure7.1 Prepare and test at least five specimens from eachsample. Trim the edges of each sp
13、ecimen to match the size ofthe clips or blocks.Adhere mounting clips or blocks to both the1This 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 Dec. 1,
14、2006. Published January 2007.2For 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 onthe ASTM website.1Copyright ASTM International, 1
15、00 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.top and bottom of the specimen (see Fig. 1), being sure the pinsor hooks are aligned. Discard all specimens that containvertical joints or that are damaged in any way. Materialsextraneous to the investigation such as
16、roofing gravel andshards of foam shall be carefully removed prior to mountingthe specimens on clips or blocks.7.2 Condition each mounted specimen to the test tempera-ture and relative humidity for at least one hour. Use 20 6 2C(68 6 4.4F) and 50 6 5 % relative humidity for these tests.Additional tem
17、peratures and humidities shall not be prohibited.7.3 Place the mounted specimen in the jaws of the testingmachine, and separate jaws at 0.8 mm/s (2 in./min.) until thespecimen comes apart. If the specimen debonds at thespecimen-clip interface, record the failure of the clip adhesiveand discard the t
18、est.7.4 Record the specimen area, the maximum load, plane,and the type of separation (adhesive, cohesive within themembrane material or adhesive layer). Test a minimum of foursamples at each test condition.8. Report8.1 Report the source of the sample, the original condition,and identify each layer o
19、f material in the sample.8.2 Report the adhesive used to attach the clips or blocks,the rate of jaw separation, the temperature, and relativehumidity during testing.8.3 Report the maximum stress in kPa (lbf/in.2), the plane ofseparation, and type of separation for each specimen. If bothadhesive and
20、cohesive separations occur in the same specimen,prepare a drawing showing the shape of each.8.4 Report the mean, maximum load, estimated standarddeviation, and number of specimens for each sample.9. Precision and Bias9.1 PrecisionThe precision of this test method is un-known, but preliminary tests s
21、how an estimated repeatabilitystandard deviation of 15 % of the mean separation strength.The estimated repeatability limit is approximately 42 % (2.8 315 %) of the mean separation strength. The precision can beinfluenced by the nature of the sample and the quality of thecentering. An interlaboratory
22、 study has been started and isexpected to be complete before December 2010.9.2 BiasThere is no known bias or accepted material totest the bias of this method.10. Keywords10.1 adhesion; cohesion; roofing; waterproofingASTM International takes no position respecting the validity of any patent rights a
23、sserted 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.This standard is subject to revision at any time
24、 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 International Headquarters. Your comments will re
25、ceive 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 shown below.This standard is copyrighted by ASTM In
26、ternational, 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).FIG. 1 SpecimenD7105062
