1、Designation:C126594(Reapproved 2011)Standard Test Method forDetermining the Tensile Properties of an Insulating GlassEdge Seal for Structural Glazing Applications1This standard is issued under the fixed designation C1265;the number immediately following the designation indicates the year oforiginal
2、adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers a laboratory procedure forquantitatively measuring
3、the tensile strength,stiffness,andadhesion properties of insulating glass edge seals that are usedin structural sealant glazing applications.Edge seals for theseapplications use a structural sealant to bond both glass lites andthe edge spacer into a monolithic sealed insulating glass unit.In typical
4、 applications,the structural sealant acts to hold theoutside lite in place under wind and gravity load and tomaintain the edge spacer in its proper position.Hereafter,theterm“insulating glass”will be abbreviated as“IG.”1.2 The characterization of the IG secondary sealantproperties,as defined by this
5、 test method,are strongly depen-dent on glass and edge spacer cleaning procedures,IG spacerprofile,location of spacer,and primary IG sealant application.Users of this test method must recognize that the IG edge sealassembly influences the secondary sealant properties.1.3 The values determined by thi
6、s test method will becharacteristic of the particular edge seal assembly that is tested.NOTE1Presently,only elastomeric,chemically curing silicone seal-ants specifically formulated for use as the secondary seal of IG units arerecognized as having the necessary durability for use in structural sealan
7、tglazing applications.1.4 The values stated in SI(metric)units are to be regardedas the standard.The inch-pound values given in parentheses areapproximate equivalents,provided for information purposes.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its
8、use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and Sealants3.Terminology3.1 Definitions
9、Refer to Terminology C717 for definitionsof the following terms used in this test method:adhesivefailure,cohesive failure,elastomeric,glazing,lite,primer,seal,sealant,silicone sealant,structural sealant,substrate.4.Summary of Test Method4.1 Five specimens are fabricated to duplicate the edge sealdes
10、ign of an IG unit for structural glazing applications.Afterthe secondary structural sealant is cured the specimens aretested to failure in tension.Testing is conducted at 23 6 2C(74 6 3.6F)at a rate of 5 6 0.5 mm(0.2 6 0.02 in.)perminute.Strength,load-displacement response,failure mode,and primary I
11、G edge seal behavior are recorded.5.Significance and Use5.1 Frequently IG units are adhered with a structural sealantto a metal framing system.In such applications,only theinward lite of glass is usually adhered to the frame.As a result,a significant portion of any outward-acting or negative windloa
12、d must be carried in tension by the joint seal between thetwo lites of the IG unit.This test will not provide informationon the integrity of the IG unit primary seal;however,it mayprovide data on load sharing between the primary IG vapor sealand the secondary structural sealant.5.2 Although this tes
13、t method prescribes one environmentalcondition,other environmental conditions and exposure cyclescan be employed for specific project evaluation.Such devia-tions should be described when reporting the data.1This test method is under the jurisdiction of ASTM Committee of C24 onBuilding Seals and Seal
14、ants and is the direct responsibility of Subcommittee C24.30on Adhesion.Current edition approved Dec.1,2011.Published December 2011.Originallyapproved in 1994.Last previous edition approved in 2005 as C1265-94(2005)1.DOI:10.1520/C1265-94R11.2For referenced ASTM standards,visit the ASTM website,www.a
15、stm.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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Apparatus and
16、 Accessory Materials6.1 Tensile Testing Machine,capable of producing a tensileload on the specimen at a rate of 5.06 0.5 mm(0.20 6 0.02in.)per minute.The machine shall be capable of measuring theload to 64 N(61 lb).See Fig.1.6.1.1 Fixed MemberA fixed or essentially stationarymember carrying a grip.6.1.2 Movable MemberA movable member carrying asecond grip.6.1.3 GripsThe grips should be suitable to firmly graspthe test fixture that holds the test specimen and should bedesigned to minimize eccentr
