1、Designation: E2690 17b An American National StandardStandard Practice forSpecimen Preparation and Mounting of Caulks and Sealantsto Assess Surface Burning Characteristics1This standard is issued under the fixed designation E2690; the number immediately following the designation indicates the year of
2、original 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 practice describes procedures for specimen prepa-ratio
3、n and mounting when testing caulks and sealants to assessflame spread and smoke development as surface burningcharacteristics using Test Method E84.1.1.1 Caulks and sealants up to 8 in. (203.2 mm) in widthshall follow the requirements of 7.1.1.1.2 Caulks and sealants in excess of 8 in. (203.2 mm) in
4、width shall follow the requirements of 7.2.1.1.2.1 Caulks and sealants in excess of 8 in. (203.2 mm) inwidth can be considered coatings.1.2 This practice applies to caulks and sealants intended forvarious uses within buildings. The caulks and sealants ad-dressed in this practice are not able to be s
5、upported by theirown structural characteristics during the test.1.2.1 This practice does not apply to adhesives that are usedto adhere or bind together surfaces.1.3 Testing is conducted in accordance with Test MethodE84.1.4 This practice does not provide pass/fail criteria that canbe used as a regul
6、atory tool.1.5 This practice does not apply to materials for which thetest specimen does not remain in place before and during thetest until maximum flame propagation has occurred.1.6 This practice is not for system evaluation. It is for thecomparison of the materials only.1.7 The results obtained b
7、y using this mounting procedureare confined to the materials themselves as tested and are notcomparable to those obtained with materials that are tested ina full tunnel width application.1.8 This fire standard cannot be used to provide quantitativemeasures.1.9 Fire testing is inherently hazardous. A
8、dequate safe-guards for personnel and property shall be employed inconducting these tests.1.10 This standard gives instructions on specimen prepara-tion and mounting, but the fire-test-response method is given inTest Method E84. See also Section 9.1.11 The text of this standard references notes and
9、footnoteswhich provide explanatory material. These notes and footnotesshall not be considered requirements of the standard.1.12 The values stated in inch-pound units are to be re-garded as standard. The values given in parentheses aremathematical conversions to SI units that are provided forinformat
10、ion only and are not considered standard.1.13 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, health, and environmental practices and deter-mine the applicabil
11、ity of regulatory limitations prior to use.1.14 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the W
12、orld Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and SealantsE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE176 Terminology of Fire StandardsIEEE/ASTM SI-10 International System
13、of Units (SI): TheModernized Metric System3. Terminology3.1 DefinitionsFor definitions of terms used in this prac-tice associated with fire issues, refer to the terminology1This practice is under the jurisdiction of ASTM Committee E05 on FireStandards and is the direct responsibility of Subcommittee
14、 E05.22 on SurfaceBurning.Current edition approved Nov. 1, 2017. Published December 2017. Originallyapproved in 2010. Last previous edition approved in 2017 as E269017a. DOI:10.1520/E269017B.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serv
15、iceastm.org. For Annual Book of ASTMStandards volume information, 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 w
16、ith internationally recognized principles on standardization 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.1contained in Terminology E176. For defi
17、nitions of terms usedin this practice associated with caulks and sealants refer to theterminology contained in Terminology C717.3.2 Definitions of Terms Specific to This Standard:3.2.1 bead, nin building construction, a strip of appliedsealant, glazing compound or putty.3.2.2 sealant, nin building c
18、onstruction, a material thathas the adhesive and cohesive properties to form a seal.3.2.3 self-supporting specimen, na specimen that remainsin place by its own structural characteristics both before andduring the fire test.4. Summary of Practice4.1 This practice describes procedures for specimen pre
19、pa-ration and mounting when testing caulks and sealants up to andincluding 8 in. (203.2 mm) in width to assess flame spreadindex and smoke developed index as surface burning charac-teristics using Test Method E84. Caulks and sealants in excessof 8 in. (203.2 mm) are to be tested in full coverage as
20、appliedto fiber cement board as described in Test Method E84.4.2 This practice applies only to caulks and sealants fromwhich it is possible to develop specimens that when applied tothe substrate are self-supporting by their own structural char-acteristics.4.3 The caulks and sealants addressed in thi
21、s practice shallbe tested in accordance with the specimen preparation andmounting procedures described in this practice, using TestMethod E84.5. Significance and Use5.1 Building products made with caulks and sealants areoften used for applications for which Test Method E84 is usedfor compliance with
22、 building code, life safety code or mechani-cal code requirements. This practice describes, in detail,specimen mounting procedures for those caulks and sealantswhich are not able to be supported by their own structuralcharacteristics during the test.5.2 Codes are often silent with regard to testing
23、caulks andsealants for the assessment of flame spread index and smokedeveloped index as surface burning characteristics. This prac-tice describes specimen preparation and mounting proceduresfor such materials and products.5.3 The material shall be representative of the materialsused in actual field
24、installations.5.4 The limitations for this procedure are those associatedwith Test Method E84.6. Conditioning6.1 Following application to the substrate, the specimensused for testing shall be conditioned as described in the sectionon specimen conditioning in Test Method E84.7. Specimen Preparation a
25、nd Mounting7.1 Caulks and Sealants up to 8 in. (203.2 mm) in width:7.1.1 Specimens shall consist of two 24.5 6 0.5 ft (7.47 60.15 m) long beads or strips of sealant or caulk installed 8 in.(203.2 mm) on center down the center of the tunnel. The beadsor strips shall be at the maximum width or diamete
26、r recom-mended for use by the manufacturer, but shall not be less than38 in. (9.5 mm).7.1.2 The specimens shall be centered so that they align onthe center line of the burner nozzles. See Fig. 1.7.1.3 The caulk or sealant shall be applied directly to afiber-cement board.7.1.4 Caulks and sealants sha
27、ll be cured per manufacturersinstructions prior to conditioning as specified in 6.1.7.2 Caulks and Sealants in Excess of 8 in. (203.2 mm) inwidth:7.2.1 Determine the surface burning characteristics ofcaulks and sealants intended to be applied at over 8 in. (203.2mm) in width by using the procedure o
28、utlined below.7.2.1.1 The test specimen preparation shall be as follows.All steps shall be completed as specified in the manufacturersinstructions.7.2.1.2 Mix the caulk or sealant, if applicable.7.2.1.3 Apply the caulk or sealant to fiber-cement board,across the entire width of the fiber cement boar
29、d up the ledges,in the thickness or at the coverage rate specified in themanufacturers instructions.7.2.1.4 Cure the caulk or sealant prior to testing.7.2.1.5 The test specimen shall comply with the require-ments of Section 6 of Test Method E84 and cover the full widthof the tunnel.8. Testing of Spe
30、cimens8.1 Testing shall be conducted using the methodologydescribed in Test Method E84.9. Operator Safety9.1 The primary concerns for operator safety are associatedwith the fire-test response procedure, Test Method E84, and notwith the specimen preparation procedure. Safety recommenda-tions are incl
31、uded in Test Method E84.FIG. 1 Schematic of Specimen PlacementE2690 17b210. Report10.1 Report the following within the Test Method E84 testreport:10.1.1 A detailed description of the specimen being tested.10.1.2 A detailed description of the specimen preparationmethod used, per Section 7.10.1.3 Obse
32、rvations, graphical results, and the values of theflame spread index and of the smoke developed index in eachtest.11. Keywords11.1 caulk; fire; fire test; flame spread; plastic; sealants;smoke developedASTM International takes no position respecting the validity of any patent rights asserted in conn
33、ection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the respons
34、ible 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 comments will receive careful c
35、onsideration 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 copyrighted by ASTM International, 10
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