1、Designation:C151910Standard Test Method forEvaluating Durability of Building Construction Sealants byLaboratory Accelerated Weathering Procedures1This standard is issued under the fixed designation C1519;the number immediately following the designation indicates the year oforiginal adoption or,in th
2、e 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 the method for the determina-tion of the durability of a sealant bas
3、ed on its ability to functionin cyclic movement maintaining adhesion and cohesion afterrepeated exposure to laboratory accelerated weathering proce-dures.1.2 This test method describes two laboratory acceleratedweathering procedures for evaluating the durability of asealant.1.3 RILEM TC139DBS is rel
4、ated to this test method.1.4 This 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 health practices and determine the applica-bility of regulatory limitations prior
5、to use.2.Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and SealantsC719 Test Method for Adhesion and Cohesion of Elasto-meric Joint Sealants Under Cyclic Movement(HockmanCycle)C1442 Practice for Conducting Tests on Sealants UsingArtificial Weathering ApparatusE177 Practi
6、ce for Use of the Terms Precision and Bias inASTM Test MethodsG113 Terminology Relating to Natural and Artificial Weath-ering Tests of Nonmetallic MaterialsG141 Guide for Addressing Variability in Exposure Testingof Nonmetallic MaterialsG151 Practice for Exposing Nonmetallic Materials inAccel-erated
7、 Test Devices that Use Laboratory Light SourcesG154 Practice for Operating Fluorescent Ultraviolet(UV)Lamp Apparatus for Exposure of Nonmetallic MaterialsG155 Practice for Operating Xenon Arc Light Apparatus forExposure of Non-Metallic Materials2.2 RILEM Standard:3RILEM TC139DBS Determination of cha
8、nges in adhesion,cohesion,and appearance of elastic weatherproofing seal-ants for high movement facade joints after exposure toartificial weathering3.Terminology3.1 The definitions given in Terminology C717 on termsrelating to building seals and sealants and in TerminologyG113 on terms relating to n
9、atural and artificial weathering testsare applicable to this test method.4.Significance and Use4.1 This test method describes the procedure to evaluate orcompare,or both,the durability of sealants when subjected toaccelerated weathering and cyclic movement in a joint.4.2 Sealant installation procedu
10、res,design considerationsand movement during cure affect the aging processes and arefundamental to the success of any sealant.These factors are notaddressed with this test method.4.3 The amount,type and frequency of movement a sealantexperiences during its lifetime strongly depends on the mate-rials
11、 used in construction and on the orientation of the jointtoward sunlight and many other factors that are not uniform orconsistent.4.4 Climatic exposures will differ with the orientation of thebuilding and shading as well as with local and regional climaticconditions.Climates in a given location can
12、vary from year toyear because of differences in solar radiation,temperature,rainfall,and atmospheric conditions.Further,the quality andintensity of solar radiation on the earths surface varies withgeographic location,season,time of day,and cloud cover.4.5 Variations in results may be expected when o
13、peratingconditions are varied within the accepted limits of this testmethod.Therefore,all test results using this test method must1This test method is under the jurisdiction ofASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.40 onWeathering.Curren
14、t edition approved July 15,2010.Published September 2010.Originallyapproved in 2002.Last previous edition approved in 2004 as C1519-04.DOI:10.1520/C1519-10.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMSta
15、ndards volume information,refer to the standards Document Summary page onthe ASTM website.3Published in Materials and Structures,2001,pp.34,579588.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 be accompanied by a report of the specific
16、operating conditionsas required in Section 11.Refer to Practice G151 for detailedinformation on the caveats applicable to use of results obtainedaccording to this test method.4.6 The results of laboratory exposure cannot be directlyextrapolated to estimate an absolute rate of deteriorationcaused by natural weathering because the acceleration factor ismaterial dependent and can be significantly different for eachmaterial and for different formulations of the same material.However,exposure of a si
