1、Designation:C124714Standard Test Method forDurability of Sealants Exposed to Continuous Immersion inLiquids1This standard is issued under the fixed designation C1247;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last re
2、vision.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 thatassists in determining the durability of a sealant and itsadhesion to a substra
3、te while continuously immersed in aliquid.This test method tests the influence of a liquid on thesealant and its adhesion to a substrate.It does not test the addedinfluence of constant stress from hydrostatic pressure that isoften present with sealants used in submerged and below-gradeapplications,n
4、or does it test the added influence of stress fromjoint movement while immersed.This test method also doesnot(in its standard form)test the added influence of acids orcaustics or other materials that may be in the liquid,in manyapplications.1.2 The values stated in SI units are to be regarded as the
5、standard.The inch-pound given in parentheses are provided forinformation only.1.3 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 determin
6、e the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C33 Specification for Concrete AggregatesC109/C109M Test Method for Compressive Strength ofHydraulic Cement Mortars(Using 2-in.or 50-mm CubeSpecimens)C150 Specification for Portland CementC717 Termi
7、nology of Building Seals and SealantsC719 Test Method for Adhesion and Cohesion of Elasto-meric Joint Sealants Under Cyclic Movement(HockmanCycle)2.2 ISO StandardsISO 13638 Building Construction-Sealants-Determinationof Resistance of Prolonged Exposure to Water33.Terminology3.1 Definitions:3.1.1 Def
8、initions of the following terms used in this testmethod are found in Terminology C717:adhesive failure;cohesive failure;compound;cure;hydrostatic pressure;joints;primer;sealant;self-leveling sealant;standard conditions;andsubstrate.4.Summary of Test Method4.1 Specimens are prepared and the sealant i
9、s cured.Thespecimens are immersed in a hot liquid at 50 6 2C(122 63.6F)for six weeks.At the end of the six weeks,thespecimens are placed into a compression/extension machine,asdescribed in Test Method C719,and cycled through themovement range appropriate to the test sealant or itsapplication,or both
10、.4.2 If after three movement cycles at 3.2 mm/h(18in./h)adhesive or cohesive failure is not noted,the specimens areagain placed in the hot liquid for an additional four weeks andthen retested.4.3 This test method consists of six weeks of immersionfollowed by three extension and compression cycles.Th
11、is canbe followed by four weeks of further immersion and a repeat ofthe three extension and compression cycles.The four weeks ofimmersion and subsequent extension and compression testingcan be repeated as many times as required for the application.5.Significance and Use5.1 This test method uses elev
12、ated temperature to acceleratethe degradation of a sealant and its adhesion to a substrate.Thistest method is an accelerated method and will only be apredictor of long-term durability if the actual service tempera-ture is significantly lower than the elevated test temperature.1This test method is un
13、der the jurisdiction ofASTM Committee C24 on BuildingSeals and Sealantsand is the direct responsibility of Subcommittee C24.30 onAdhesion.Current edition approved Jan.1,2014.Published February 2014.Originallyapproved in 1993.Last previous edition approved in 2009 as C1247 09.DOI:10.1520/C1247-14.2Fo
14、r 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.3Available from American National Standards Institute,11 W.42nd Stree
15、t,13thFloor,New York,NY 10036.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.2 This test method can be used as an indicator of longevitybut direct correlation to actual use will be difficult for manyapplications.5.3 The correlation of
16、data from this test method to appli-cations where the sealant joint will have wet and dry cycleswill be difficult since,with some sealants on some substrates,adhesion that is lost during wet periods is regained during dryperiods.5.4 This test method is performed in a hot liquid and may beconsidered an acceleration of deterioration of the sealant or thesealants adhesion to a substrate.Compared to how the sealantwill be used in some applications,in some cases,this test maybe less severe than the a
