ASTM C1589 C1589M-2017b Standard Practice for Outdoor Weathering of Construction Seals and Sealants《建筑密封件和密封剂室外老化的标准实施规程》.pdf
《ASTM C1589 C1589M-2017b Standard Practice for Outdoor Weathering of Construction Seals and Sealants《建筑密封件和密封剂室外老化的标准实施规程》.pdf》由会员分享,可在线阅读,更多相关《ASTM C1589 C1589M-2017b Standard Practice for Outdoor Weathering of Construction Seals and Sealants《建筑密封件和密封剂室外老化的标准实施规程》.pdf(11页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C1589/C1589M 17aC1589/C1589M 17bStandard 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 revisio
2、n, the year of last 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 to be used as part of a test designed to determine
3、the weatherabilityof building construction, seals and sealants.NOTE 1See Practice G24 for Exposures to Daylight Filtered Through Glass.1.2 This practice includes three procedures for outdoor weathering. Procedure A exposes specimens to outdoor weatheringwithout movement. Procedure B and Procedure C
4、are, respectively, continuous natural and periodic manual techniques forsubjecting specimens to the combination of cyclic movement and exposure to outdoor weathering.1.3 This practice is limited to the method by which the construction seals or sealants are exposed to outdoor weathering as partof a t
5、est program. It refers to the types of evaluations to be performed following the outdoor exposure but does not describe thetest methods.1.4 Means of evaluation of the effects of weathering will depend on the intended use of the test material.1.5 The values stated in either SI units or inch-pound uni
6、ts are to be regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.6 This standard does not purport to addr
7、ess all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.1.7 This international standard was developed in accordance
8、 with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standar
9、ds:2C717 Terminology of Building Seals and SealantsC719 Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)C1135 Test Method for Determining Tensile Adhesion Properties of Structural SealantsC1735 Test Method for Measuring the Time Dependent Modu
10、lus of Sealants Using Stress RelaxationE631 Terminology of Building ConstructionsE772 Terminology of Solar Energy ConversionG7 Practice for Atmospheric Environmental Exposure Testing of Nonmetallic MaterialsG24 Practice for Conducting Exposures to Daylight Filtered Through GlassG84 Practice for Meas
11、urement of Time-of-Wetness on Surfaces Exposed to Wetting Conditions as in Atmospheric CorrosionTestingG113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic MaterialsG147 Practice for Conditioning and Handling of Nonmetallic Materials for Natural and Artificial Weatheri
12、ng TestsG169 Guide for Application of Basic Statistical Methods to Weathering TestsG178 Practice for Determining theActivation Spectrum of a Material (Wavelength Sensitivity to an Exposure Source) Using theSharp Cut-On Filter or Spectrographic Technique1 This practice is under the jurisdiction of AS
13、TM Committee C24 on Building Seals and Sealants and is the direct responsibility of Subcommittee C24.40 on Weathering.Current edition approved March 15, 2017May 1, 2017. Published April 2017May 2017. Originally approved in 2004. Last previous edition approved in 2017 asC1589/C1589M-17.-17a. DOI: 10.
14、1520/C1589/C1589M-17A.10.1520/C1589/C1589M-17B.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document
15、is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appro
16、priate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13. Terminology3.1 DefinitionsDefinitions are found in Terminol
17、ogies C717, G113, E631, and E772.4. Significance and Use4.1 Tests conducted in accordance with this practice are used to evaluate the weatherability of construction seals and sealantmaterials when they are exposed to outdoor weather conditions. The weatherability of seals and sealants in actual outd
18、oor use canbe very different depending on the location because of differences in solar radiation, moisture, temperature, pollutants, and otherfactors. Sealant color may also affect weatherability.4.2 This practice allows for three options: Option 1 Procedure A in which the effect of movement during
19、weathering is notconsidered; Option 2 Procedure B in which specimens are weathered in conjunction with movement based on thermal changes.The applied strain is proportional to a combination of the temperature at the time the equipment is set up and subsequent thermalchanges. This option closely mimic
20、s the actual movements that occur in many sealant installations, but is less repeatable than themovement in Procedure C; Option 3 Procedure C in which the strain during weathering is manually applied. This procedureallows for excellent control and repeatability, but is less representative of movemen
21、t in actual use conditions than the movementin Procedure B. Options 2 and 3 have been added to this practice based on peer reviewed scientific literature demonstrating thatapplied strain separately and in combination with other weathering stresses causes changes in the weatherability of sealants.4.3
22、 The type, frequency and amount of movement of sealants varies with location and may affect weatherability. It cannot beassumed, therefore, that results from one exposure in a single location will be useful for determining weatherability in a differentlocation. Exposures in several locations with di
23、fferent climates (for example, solar radiation, moisture, temperature, pollutants,biological and other factors) that represent a broad range of anticipated service conditions are recommended.4.4 It is strongly recommended that control materials of similar composition and construction to the test spe
24、cimens and withknown weatherability be exposed along with the test specimens for the purpose of comparing the performance of test materialsto the controls. (See 6.2).4.5 The results of short-term exposure tests can provide an indication of relative outdoor performance, but they shall not be usedto p
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