ASTM C1589 C1589M-2017 Standard Practice for Outdoor Weathering of Construction Seals and Sealants《建筑密封材料和密封剂的室外风化的标准实施规程》.pdf
《ASTM C1589 C1589M-2017 Standard Practice for Outdoor Weathering of Construction Seals and Sealants《建筑密封材料和密封剂的室外风化的标准实施规程》.pdf》由会员分享,可在线阅读,更多相关《ASTM C1589 C1589M-2017 Standard Practice for Outdoor Weathering of Construction Seals and Sealants《建筑密封材料和密封剂的室外风化的标准实施规程》.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C1589/C1589M 17Standard Practice forOutdoor Weathering of Construction Seals and Sealants1This standard is issued under the fixed designation C1589/C1589M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, the year of la
2、st revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice describes outdoor exposure procedures tobe used as part of a test designed to determine the weather-abilit
3、y of building construction, seals and sealants.NOTE 1See Practice G24 for Exposures to Daylight Filtered ThroughGlass.1.2 This practice includes three procedures for outdoorweathering. Procedure A exposes specimens to outdoor weath-ering without movement. Procedure B and Procedure C are,respectively
4、, continuous natural and periodic manual tech-niques for subjecting specimens to the combination of cyclicmovement and exposure to outdoor weathering.1.3 This practice is limited to the method by which theconstruction seals or sealants are exposed to outdoor weather-ing as part of a test program. It
5、 refers to the types ofevaluations to be performed following the outdoor exposurebut does not describe the test methods.1.4 Means of evaluation of the effects of weathering willdepend on the intended use of the test material.1.5 The values stated in either SI units or inch-pound unitsare to be regar
6、ded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.6 This standard does not purport to address all of thesafety
7、 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 to use.2. Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals
8、 and SealantsC719 Test Method for Adhesion and Cohesion of Elasto-meric Joint Sealants Under Cyclic Movement (HockmanCycle)C1135 Test Method for Determining TensileAdhesion Prop-erties of Structural SealantsC1735 Test Method for Measuring the Time DependentModulus of Sealants Using Stress Relaxation
9、E631 Terminology of Building ConstructionsE772 Terminology of Solar Energy ConversionG7 Practice for Atmospheric Environmental Exposure Test-ing of Nonmetallic MaterialsG24 Practice for Conducting Exposures to Daylight FilteredThrough GlassG84 Practice for Measurement of Time-of-Wetness on Sur-faces
10、 Exposed to Wetting Conditions as in AtmosphericCorrosion TestingG113 Terminology Relating to Natural and Artificial Weath-ering Tests of Nonmetallic MaterialsG147 Practice for Conditioning and Handling of Nonmetal-lic Materials for Natural and Artificial Weathering TestsG169 Guide for Application o
11、f Basic Statistical Methods toWeathering TestsG178 Practice for Determining the Activation Spectrum of aMaterial (Wavelength Sensitivity to an Exposure Source)Using the Sharp Cut-On Filter or Spectrographic Tech-nique3. Terminology3.1 DefinitionsDefinitions are found in TerminologiesC717, G113, E631
12、, and E772.4. Significance and Use4.1 Tests conducted in accordance with this practice areused to evaluate the weatherability of construction seals andsealant materials when they are exposed to outdoor weatherconditions. The weatherability of seals and sealants in actualoutdoor use can be very diffe
13、rent depending on the locationbecause of differences in solar radiation, moisture,temperature, pollutants, and other factors. Sealant color mayalso affect weatherability.4.2 This practice allows for three options: Option 1 Procedure A in which the effect of movement during weather-ing is not conside
14、red; Option 2 Procedure B in whichspecimens are weathered in conjunction with movement based1This practice is under the jurisdiction of ASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.40 onWeathering.Current edition approved Feb. 1, 2017. Publish
15、ed March 2017. Originallyapproved in 2004. Last previous edition approved in 2016 as C1589/C1589M-16.DOI: 10.1520/C1589/C1589M-17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume informat
16、ion, 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization
17、established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1on thermal changes. The applied strain is proportional to acombination of the temperature at the tim
18、e the equipment is setup and subsequent thermal changes. This option closelymimics the actual movements that occur in many sealantinstallations, but is less repeatable than the movement inProcedure C; Option 3 Procedure C in which the strain duringweathering is manually applied. This procedure allow
19、s forexcellent control and repeatability, but is less representative ofmovement in actual use conditions than the movement inProcedure B. Options 2 and 3 have been added to this practicebased on peer reviewed scientific literature demonstrating thatapplied strain separately and in combination with o
20、ther weath-ering stresses causes changes in the weatherability of sealants.4.3 The type, frequency and amount of movement ofsealants varies with location and may affect weatherability. Itcannot be assumed, therefore, that results from one exposure ina single location will be useful for determining w
21、eatherabilityin a different location. Exposures in several locations withdifferent climates (for example, solar radiation, moisture,temperature, pollutants, biological and other factors) thatrepresent a broad range of anticipated service conditions arerecommended.4.4 It is strongly recommended that
22、control materials ofsimilar composition and construction to the test specimens andwith known weatherability be exposed along with the testspecimens for the purpose of comparing the performance oftest materials to the controls. (See 6.2).4.5 The results of short-term exposure tests can provide anindi
23、cation of relative outdoor performance, but they shall notbe used to predict the absolute long-term performance of a sealor sealant material. The results of tests conducted for less than12 months will depend on the particular season of the year inwhich they begin.4.6 Because of year-to-year climatat
24、ological variations, re-sults from a single exposure test cannot be used to predict theabsolute rate at which a seal or sealant degrades. Several yearsof repeat exposures are needed to determine an average testresult for a given location.4.7 Climatic and construction factors can impose cyclicmovemen
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