1、Designation: C 1642 07Standard Practice forDetermining Air Leakage Rates of Aerosol Foam Sealantsand Other Construction Joint Fill and Insulation Materials1This standard is issued under the fixed designation C 1642; the number immediately following the designation indicates the year oforiginal adopt
2、ion or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice is intended to determine the air leakagerate of aerosol fo
3、am sealants as measured in a standardized jig.This practice provides a procedure for preparing the testapparatus and further describes the application of aerosol foamsealant and other joint fillers to the apparatus prior to conduct-ing Test Method E 283.1.2 This practice allows testing laboratories
4、to quantify theair leakage rate of aerosol foam sealants or joint fillingproducts using Test Method E 283 and reporting the data inL/(s m2) according to Practice E29.1.3 This practice is used in conjunction with Test MethodE 283.Although Test Method E 283 is a laboratory test methodused with fenestr
5、ation products, individuals interested in per-forming field air leakage tests on installed units shouldreference Test Method E 783 and AAMA 502.1.4 Aerosol foam sealants are used for a variety of end useapplications generally intended to reduce air leakage in thebuilding envelope.1.5 Insulating type
6、 materials also will be found suitable forevaluation with this practice.1.6 There are no other known practices or test methods thatspecify the preparation of the assemblies used to determine theair leakage rate of gap filling sealants, dry preformed foams orinsulations.1.7 The values given in SI uni
7、ts are the standard. Theinch-pound units in parentheses are for information only.1.8 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 de
8、termine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 717 Terminology of Building Seals and SealantsC 1330 Specification for Cylindrical Sealant Backing forUse with Cold Liquid-Applied SealantsC 1536 Test Method for Measuring the Yield for Aer
9、osolFoam SealantsC 1620 Specification for Aerosol Polyurethane and AerosolLatex Foam SealantsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 283 Test Method for Determining Rate of Air LeakageThrough Exterior Windows, Curtain Walls, and DoorsUnder
10、Specified Pressure Differences Across the SpecimenE 783 Test Method for Field Measurement of Air LeakageThrough Installed Exterior Windows and Doors3. Terminology3.1 Definitions:3.1.1 air barrierthe assembly of material(s) used inbuilding construction to reduce or retard the uncontrolledpassage of a
11、ir into and out of the building.1This practice is under the jurisdiction of ASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.61 onAerosol Foam Sealants.Current edition approved July 1, 2007. Published August 2007.2For referenced ASTM standards, vi
12、sit 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 International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-
13、2959, United States.3.1.2 rough opening gapthe open space between thebuilding frame and the fenestration product.3.1.3 preformed dry foam materialany cellular productdesigned for filling construction joints to resist air leakage.3.1.4 preformed pre-compressed tapesany cellular tapesupplied compresse
14、d from its fully expanded shape and de-signed for filling construction joints to resist air leakage.4. Summary of Practice4.1 This practice establishes specimen preparation and a testprotocol for determining the air leakage rates of aerosol foamsealants per Test Method E 283. Application of foam sea
15、lantshall be in accordance with all manufacturers recommenda-tions and in a manner reflecting in use conditions such as thedepth and width of the joint or gap. In the event that themanufacturers instructions are not available, this practice shallbe the default application method for the test materia
16、l (jointwidth and depth). The depth and density (use Test MethodC 1536 for aerosol foam sealant) of the applied material shallbe reported in all cases.4.2 This practice references the following material types:4.2.1 Type I Material (Aerosol Foam Sealants)A) PolyurethaneB) Latex4.2.2 Type II Material
17、(Preformed dry material)A) Closed cell foamB) Bi-cellular foam4.2.3 Type III Material (Batt-Insulation)A) FacedB) Un-Faced5. Significance and Use5.1 This practice is intended to measure air flow throughmaterials used to fill joints found in building construction.5.2 This practice does not purport to
18、 establish all requiredcriteria for the selection of an air barrier assembly. Therefore,the results should be used only for comparison purposes andshould not be seen as the equivalent to field installed buildingsystems.6. Sampling6.1 One test jig shall be required for each material type.7. Test Appa
19、ratus7.1 The jig required for testing is shown in Fig. 1.NOTE 1See Annex A1 for the detailed construction and assemblydetails of the test apparatus.8. Sample Preparation8.1 General DescriptionThe test sample is a jig contain-ing five cavities each having the following dimensions: 9.525mm (0.375 in.)
20、 wide by 863.6 mm (34 in.) long by 101.6 mm(4 in.) deep. The extrusions are enclosed by a wooden buckframe comprised of 50.8 by 152.4 mm (2 in. by 6 in.) lumber(See Annex A1 drawings).8.2 The buck shall be sealed at all extraneous points withsilicon and butyl tape or other appropriate material. This
21、 sealshall extend across the termination joint between aluminumtube and the wood buck surround and 184.15 mm (7.25 in.)toward the center of the specimen completely covering theexposed aluminum shims.8.3 Applying the Test Material in the Jig:8.3.1 Foam Sealant ApplicaionThe foam may be appliedin mult
22、i passes as desired.Approximately one half of the cavitydepth should be filled on the first pass and allowed to cure untilthe surface is tack free (see Specification C 1620 for defini-tion). A sharp knife should be used to trim the foam. Do notattempt to trim the foam until it has cured for 24 h. It
23、 is notnecessary to trim the cured foam on the exterior side of thejoint, however the inside face should be trimmed flush with thealuminum if the foam expands beyond the surface.NOTE 2Only one pass or more than two passes is required to fully fillthe cavities, enter this information as a note in the
24、 test report. UseStandard Laboratory Conditions for sample preparation and cure of thefoam sealant.8.3.2 Pre-formed Foam ApplicationCut a continuouslength of Type II material measuring 12.7 mm (12 in.) longerthan the channel length. Align the cut length with the channelgap to be filled. Carefully us
25、e a blunt or round device to pushthe aligned material into the total length of the 9.525 mm(0.375 in.) gap. If material is punctured, cut, or otherwisedamaged during insertion, it shall be removed, discarded, andreplaced with a new length of material. Since by design, the cutFIG. 1 An Assembled Test
26、 Jig Apparatus Ready for Joint Fillingwith a Perimeter Seal Applied in the Wood Test BuckC1642072material length is slightly longer, the ends should be com-pressed on both ends to provide a tight fit against the shims andchannels. The inserted material (1) shall be between thechannel with no visible
27、 material protruding to either theinterior or the exterior sides, (2) shall provide a continuouscontact surface between the channels and shims, and (3) shallbe positioned at the same depth in the channel with a varianceof 66.35 mm (0.25 in.). This procedure applies for eachadditional continuous leng
28、th that is positioned in the channel.Reported information shall include the depth of the materialinto the joint, material cross-sectional dimensions prior toinsertion, number of pieces if more than one length of foam isused, length of each piece, and type and class of material,(Type shall be bi-cell
29、ular or closed cell per Terminology C 717.Class would be C, closed cell or B, bi-cellular per SpecificationC 1330 or other).8.3.3 Batt material installation: Cut a continuous length ofType III material measuring 88.9 mm (3.5 in.) by 19.05 mm(0.75 in.) by 1177.73 mm (45.38 in.). Note: The length is 2
30、5.4mm (1.0 in.) longer than the aluminum channel. Align the cutlength with the channel gap to be filled. Carefully use a bluntor round device to push the aligned material into the totallength of the 9.525 mm (0.375 in.) gap. Ensure specimencompletely fills the cavity with no visible material protrud
31、ingto either the interior or the exterior sides.9. Test Procedure9.1 Air Leakage:9.1.1 The air leakage testing procedure shall be conductedin accordance with Test Method E 283. A minimum pressuredifferential of 75 Pa is required when testing all products andaerosol foam sealants but higher test pres
32、sures can be evaluatedand reported also.9.1.2 ResultsThe rate of air leakage for both exfiltrationand infiltration shall be reported as: litres/second/square meter,that is, L/s/m2) (ft3/min /ft2) and litres/second/linear metre, thatis, L/s/m (ft3/min/ft).10. Calculation10.1 The total air leakage rat
33、e (Qs) for the test specimenshall be expressed in terms of airflow at standard conditionsusing the following equations:Qs 5 Qt/AQl 5 Qt/lwhere:Qs = air leakage rate for test specimen, L/s/m2) (ft3/min/ft2)Ql = air leakage rate for test specimen, L/s/m) (ft3/min/ft)Qt = total air leakage rateA = surf
34、ace area of one specimen: 0.00822 m2(0.089 ft2)l = length of one specimen joint: 0.864 m (2.83 ft)11. Report11.1 General Requirements:11.1.1 Complete product name and model number of prod-uct tested,11.1.2 Manufacturers name,11.1.3 Manufactured date or expiration date, or both, whenprovided,11.1.4 T
35、est initiation date,11.1.5 The number of foam beads or number of strips orpieces used, or both, to fill the jig,11.1.6 Label net weight if provided, and11.1.7 Specify depth and size of preformed foam specimensused to fill the jig apparatus.11.2 A statement indicating that the test method used was in
36、accordance with ASTM C 1642.11.3 The results of the air leakage rate to be reported in unitsof L/s/m2(fm3/min/ft2) and L/s/m (ft3/min/ft)11.4 Any modifications or deviations from this practiceshould be reported.12. Precision and Bias12.1 The precision and bias of this practice has not beendetermined
37、.13. Keywords13.1 aerosol; aerosol foam; air barrier; air barrier foamsealant; air exfiltration; air infiltration; air leakage; air perma-nence; door; fenestration; insulation materials; latex foamsealant; polyurethane foam sealant; windowANNEXA1. CONSTRUCTION AND ASSEMBLYA1.1 Detailed Construction
38、Drawings for the Test Appa-ratus (Test Buck):A1.1.1 See Figs. A1.1-A1.3.A1.2 Construction of the Test Buck:A1.2.1 Materials List for Building Test Buck:(1) Two pieces stock pine. Dimensions: 50.8 mm (2.0 in.)by 152.4 mm (6 in.) by 2438.4 mm (8 ft).(2) One piece stock pine. Dimensions: 25.4 mm (1.0 i
39、n.) by50.8 mm (2.0 in.) by 2438.4 mm (8 ft).(3) Sixteen #8 drywall screws 50.80 mm (2 in.).(4) Eight #8 drywall screws 31.75 mm (114 in.).(5) Gunnable sealant or self-adhering flashing tape ad-equate to seal the test assemblys non-test areas.(6) Two 1024 threaded rods, four 1024 washers and four1024
40、 nuts.(7) Ten aluminum shims, thickness: 9.525 mm (0.375 in.)thick.(8) 3.175 mm (0.125 in.) wall made from T52 6063aluminum 50.8 mm (2 in.) by 101.6 mm (4 in.).C1642073A1.2.2 Tools Required:(1) Industrial drill press.(2) Portable or plug-in drill.(3) Table saw.(4) Caulk gun.(5) 44.45 mm hole saw.(6)
41、 3.175 mm drill bit (for pilot holes on buck)(7) horizontal band saw.A1.2.3 Special Equipment Required for Testing(1) Test Method E 283 Test Apparatus.A1.2.4 Method of Construction for Test SpecimenA1.2.5 Frame Construction:(a) Cut 50.8 by 152.4 mm (2 by 6 in.) to a length of 1.15m.(b) Cut 2nd frami
42、ng member to a length of 1.15 m.(c) For head and sill pieces cut lengths at 355.6 mm.(d) Frame up three sides leaving one 1.15-m lengthunassembled.(e) Continue to assemble substrate section as indicatedbelow.A1.2.6 Substrate Construction:(a) On a horizontal band saw, cut four aluminum substratesto 1
43、152.525 mm length.(b) After the four substrates are cut to 1152.525 mm lengthit is vital that they fit inside the dimensions of the 50.8 by 152.4mm (2 by 6 in.) frame. Place the wooden frame together so the50.8 mm frame side is flat on the table. Do not fasten the lastjamb buck section yet, but asse
44、mble the wood framing so thesix aluminum lineals fit inside the buck.(c) Cut the 25.4 by 50.8 mm pine sotck into four cuts at101.6 mm lengths.(d) Fasten the 101.6 mm piece of pine in a manner tosecure aluminum substrates. (See Fig. A1.2)(e) Drill and assemble aluminum lineals according toexploded as
45、sembly drawing (Fig. A1.2). Seal between eachshim and aluminum substrate.FIG. A1.1 Detailed Construction Drawings for the Test Apparatus(Test Buck)FIG. A1.2 Test Buck Exploded AssemblyFIG. A1.3 Front View Assembled Test BuckC1642074ASTM International takes no position respecting the validity of any
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47、ion 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 of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your c
48、omments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrig
49、hted 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).C1642075
