ASTM E2321-2003(2011) Standard Practice for Use of Test Methods for Determining the Water Vapor Transmission (WVT) of Exterior Insulation and Finish Systems (EIFS)《测定室外绝缘和末道漆系统(EIF.pdf

1、Designation: E2321 03 (Reapproved 2011)Standard Practice forUse of Test Methods E96/E96M for Determining the WaterVapor Transmission (WVT) of Exterior Insulation and FinishSystems (EIFS)1This standard is issued under the fixed designation E2321; the number immediately following the designation indic

2、ates the year oforiginal 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 standard describes how to use Test Met

3、hodsE96/E96M to determine the water vapor transmission (WVT)characteristics of an EIFS sample.1.2 An Exterior Insulation and Finish System (EIFS) is amultilayer exterior building wall material that consists of anumber of layers. For the purpose of this standard, these layers,whether they be individu

4、al EIFS component materials in singlelayers, or groups of EIFS component materials, are called the“EIFS sample.”1.3 The Water Method, Procedures B and D described insection X1.1.2 and X1.1.5 of Appendix X1 of Test MethodsE96/E96M shall be used in this standard.1.4 This standard is limited to specime

5、ns not over 114 in.(32 mm) in thickness, except as provided in Section 9 of thisstandard.1.5 The values stated in inch-pound units are to be regardedas the standard. Metric inch-pound conversion factors for watervapor transmission, permeance, and permeability are stated inTable 1 of Test Methods E96

6、/E96M.All conversions of mm Hgto Pa are made at a temperature of 0C.1.6 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 a

7、pplica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E96/E96M Test Methods for Water Vapor Transmission ofMaterialsE631 Terminology of Building ConstructionsE2110 Terminology for Exterior Insulation and Finish Sys-tems (EIFS)3. Terminology3.1 For definition

8、s of general terms relating to:3.1.1 Water vapor transmission of materials, see Test Meth-ods E96/E96M.3.1.2 Building construction, see Terminology E631.3.1.3 EIFS, see Terminology E2110.4. Summary of Practice4.1 This standard describes how to determine the watervapor transmission (WVT) of the EIFS

9、sample, using the WaterMethod, Procedures B and D, of Test Methods E96/E96M.Inthe Water Method, the dish or tray contains distilled water, andthe water vapor passes through the test specimen from theinside of the dish to the chamber is which the specimen iscontained. Eventually the rate of vapor flo

10、w stabilizes, and byweighting the change in weight over time, the water vaportransmission of the EIFS sample can be calculated.4.1.1 For both Procedures, three specimens shall be used.4.1.1.1 Procedure B shall be used for specimens that inactual use on a building would have the higher humidity on th

11、eindoor side of the wall.4.1.1.2 Procedure D shall be used, for specimens that inactual use on a building would have the higher humidity on theoutdoor side of the wall.5. Significance and Use5.1 The purpose of this test is to obtain steady state valuesof water vapor transfer through the EIFS sample.

12、 This charac-teristic of EIFS is commonly requested by regulatory anddesign organizations, and is used in thermal and moisturestudies of building walls. The degree to which an EIFS allowswater vapor to pass through it can affect the performance of anEIFS wall assembly.1This practice is under the jur

13、isdiction of ASTM Committee E06 on Perfor-mance of Buildings and is the direct responsibility of Subcommittee E06.58 onExterior Insulation and Finish Systems (EIFS).Current edition approved Nov. 15, 2011. Published December 2011. Originallyapproved in 2003. Last previous edition approved in 2003 as

14、E2321 03. DOI:10.1520/E2321-03R11.2For 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.1Copyright ASTM Internation

15、al, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.2 A permeance value obtained under one set of testconditions does not indicate the value under a different set ofconditions. For this reason, the test conditions selected arethose that most closely approach the

16、 conditions of use for EIFScomponents and assemblies.5.3 This standard should not be used alone as the sole meansfor evaluating the water vapor transmission characteristics of agiven EIFS wall assembly. Other methods are available, andshould be considered and used as appropriate.5.4 To be meaningful

17、 in evaluating the thermal and moisturecondition of a given EIFS wall assembly, the specimens used inthis standard should represent closely the materials that actu-ally exist, or will exist, on a given building.6. Apparatus6.1 The apparatus shall be as described in Test MethodsE96/E96M, sections 6.1

18、, 6.2, and 6.3. The Water Method,Procedures B and D, shall be used; the Desiccant Method shallnot be used.6.2 For specimens that include the thermal insulation board,the apparatus shall be a pan 1112 by 1112 in. (29 by 29 cm)square, as described in Figure X2.1 of Test Methods E96/E96M.6.3 For specim

19、ens that do not include the thermal insula-tion, the apparatus shall be a dish 4 in. (10 cm) in diameter, asdescribed in Figure X2.2 of Test Methods E96/E96M.7. Materials7.1 The materials used for determining the water vaportransmission (WVT) of EIFS components or combinations ofcomponents shall be

20、as described in Test Methods E96/E96M,Section 7.8. Sampling8.1 Materials used for determining the water vapor trans-mission of EIFS components or assemblies shall be sampled asdescribed in Section 8 of Test Methods E96/E96M.9. Test Specimen9.1 Test specimens for EIFS components or assemblies shallbe

21、 constructed as Section 9 of Test Methods E96/E96M, exceptas modified below:9.1.1 Test specimens of the EIFS sample shall be individualEIFS components (finish, reinforced basecoat or thermal insu-lation board), or combinations of individual EIFS components(for example, reinforced basecoat and finish

22、, with the finishapplied to the basecoat; or thermal insulation board with thereinforced basecoat applied to it; and so forth).9.1.2 As a minimum, all test specimens shall be allowed toequilibrate by placing the test specimen in a controlled constantenvironmental chamber at the temperature and relat

23、ive humid-ity settings for 168 h (7 days).NOTE 1If specimens include thermal insulation board, time forstabilization of water vapor flow will be longer than the specimen withEIFS coatings alone.9.1.2.1 To determine the water vapor transmission, threespecimens each of Procedure B and Procedure D shal

24、l be used.9.1.3 All specimens shall have their thickness measured inaccordance with 14.1.1 of Test Methods E96/E96M.10. Attachment of Specimen to Test Dish10.1 Test specimens for EIFS components or assembliesshall be attached to the test dish by sealing as specified in TestMethods E96/E96M, Section

25、10. (WarningThe sealantaround the edge of the specimen in the pan or dish, must not beabsorbed into porous material, if any, contained in the speci-men itself.)11. Test Procedure11.1 The test procedure shall be as described in TestMethods E96/E96M, Section 12, the Water Method, Proce-dures B and D.1

26、2. Calculation and Analysis of Results12.1 Results of the rate of water vapor transmission (WVT)shall be determined and reported as specified in Section 13 ofTest Methods E96/E96M.13. Report13.1 The report shall include the following:13.1.1 Identification of the EIFS component or combina-tions of co

27、mponents tested.13.1.1.1 All wet-applied materials shall be identified by theEIFS manufacturers name, product name, and their thickness.13.1.1.2 Specimens that include reinforcing mesh shallidentify the reinforcing mesh by the EIFS manufacturersname, product name, and weight per unit area.13.1.1.3 S

28、pecimens that include thermal insulation boardshall identify the thermal insulation board by thickness, type,and density.13.1.2 Thickness of Specific Materials:13.1.2.1 To measure thickness, test specimens shall be cutwith a diamond saw from larger pieces of the EIFS from whichthe EIFS sample was ob

29、tained. Thickness shall be measuredusing a microscope, optical comparator or a14-in. (0.6-cm)diameter spherical head micrometer. Thickness shall be mea-sured in accordance with Section 9 of Test Methods E96/E96M.(1) For finish coat thickness measurement, a microscope oroptical comparator shall be us

30、ed.(2) For components other than the finish coat, when amicrometer is used, thickness shall be measured in accordancewith section 9.5 of Test Methods E96/E96M.13.1.3 A drawing describing how the EIFS component orcombination of components was configured for the test for bothProcedure B and Procedure

31、D shall be provided. The drawingshall indicate the direction of vapor flow.13.1.4 Items 14.1.1 through 14.1.10 of Section 14 in TestMethods E96/E96M shall be included in the report.14. Precision and Bias14.1 Precision and bias for determination of the rate ofwater vapor transmission (WVT) as specifi

32、ed in this standardpractice shall be established per Section 15, Test MethodsE96/E96M.E2321 03 (2011)215. Keywords15.1 ASTM Test Methods E96/E96M; condensation; EIFS;exterior insulation and finish system; finish; insulation; mois-ture; permeability; permeance; reinforced basecoat; reinforcingmesh; w

33、ater vapor; water vapor transmission; WVTASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and th

34、e riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision o

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36、make your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).E2321 03 (2011)3