1、Designation: E2690 17E2690 17a 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
2、 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 practice describes procedures for specimen pre
3、paration and mounting when testing caulks and sealants to assess flamespread and smoke development as surface burning characteristics using Test Method E84.1.1.1 Caulks and sealants up to 8 in. (203.2 mm) in width shall follow the requirements of 7.1.1.1.2 Caulks and sealants in excess of 8 in. (203
4、.2 mm) in width shall follow the requirements of 7.2.1.2 This practice applies to caulks and sealants intended for various uses within buildings. The caulks and sealants addressedin this practice are not able to be supported by their own structural characteristics during the test.1.2.1 This practice
5、 does not apply to adhesives that are used to adhere or bind together surfaces.1.3 Testing is conducted in accordance with Test Method E84.1.4 This practice does not provide pass/fail criteria that can be used as a regulatory tool.1.5 This practice does not apply to materials for which the test spec
6、imen does not remain in place before and during the testuntil maximum flame propagation has occurred.1.6 This practice is not for system evaluation. It is for the comparison of the materials only.1.7 The results obtained by using this mounting procedure are confined to the materials themselves as te
7、sted and are notcomparable to those obtained with materials that are tested in a full tunnel width application.1.8 This fire standard cannot be used to provide quantitative measures.1.9 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducti
8、ng thesetests.1.10 This standard gives instructions on specimen preparation and mounting, but the fire-test-response method is given in TestMethod E84. See also Section 9.1.11 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotesshall
9、not be considered requirements of the standard.1.12 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.13 This standard does not purport
10、 to address 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.1.14 This international standard was developed in a
11、ccordance 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 AST
12、M Standards:2C717 Terminology of Building Seals and Sealants1 This practice is under the jurisdiction of ASTM Committee E05 on Fire Standards and is the direct responsibility of Subcommittee E05.22 on Surface Burning.Current edition approved May 15, 2017July 1, 2017. Published May 2017July 2017. Ori
13、ginally approved in 2010. Last previous edition approved in 20102017 asE26901017.2. DOI: 10.1520/E269017.10.1520/E269017A.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refe
14、r to the standards Document Summary page on the ASTM website.This document 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 cha
15、nges accurately, ASTM recommends that users consult prior editions as appropriate. 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. U
16、nited States1E84 Test Method for Surface Burning Characteristics of Building MaterialsE176 Terminology of Fire StandardsIEEE/ASTM SI-10 International System of Units (SI): The Modernized Metric System3. Terminology3.1 DefinitionsFor definitions of terms used in this practice associated with fire iss
17、ues, refer to the terminology contained inTerminology E176. For definitions of terms used in this practice associated with caulks and sealants refer to the terminologycontained in Terminology C717.3.2 Definitions of Terms Specific to This Standard:3.2.1 bead, nin building construction, a strip of ap
18、plied sealant, glazing compound or putty.3.2.2 sealant, nin building construction, a material that has the adhesive and cohesive properties to form a seal.3.2.3 self-supporting specimen, na specimen that remains in place by its own structural characteristics both before and duringthe fire test.4. Su
19、mmary of Practice4.1 This practice describes procedures for specimen preparation and mounting when testing caulks and sealants up to andincluding 8 in. (203.2 mm) in width to assess flame spread index and smoke developed index as surface burning characteristicsusing Test Method E84. Caulks and seala
20、nts in excess of 8 in. (203.2 mm) are to be tested in full coverage as applied to fiber cementboard as described in Test Method E84.4.2 This practice applies only to caulks and sealants from which it is possible to develop specimens that when applied to thesubstrate are self-supporting by their own
21、structural characteristics.4.3 The caulks and sealants addressed in this practice shall be tested in accordance with the specimen preparation and mountingprocedures described in this practice, using Test Method E84.5. Significance and Use5.1 Building products made with caulks and sealants are often
22、used for applications for which Test Method E84 is used forcompliance with building code, life safety code or mechanical code requirements. This practice describes, in detail, specimenmounting procedures for those caulks and sealants which are not able to be supported by their own structural charact
23、eristics duringthe test.5.2 Codes are often silent with regard to testing caulks and sealants for the assessment of flame spread index and smokedeveloped index as surface burning characteristics. This practice describes specimen preparation and mounting procedures for suchmaterials and products.5.3
24、The material shall be representative of the materials used in actual field installations.5.4 The limitations for this procedure are those associated with Test Method E84.6. Conditioning6.1 Following application to the substrate, the specimens used for testing shall be conditioned as described in the
25、 section onspecimen conditioning in Test Method E84.7. Specimen Preparation and 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 6 0.15 m) long beads or strips of sealant or caulk installed 8 in. (203.2mm) on center down the cen
26、ter of the tunnel. The beads or strips shall be at the maximum width or diameter recommended foruse by the manufacturer, but shall not be less than 38 in. (9.5 mm).7.1.2 The specimens shall be centered so that they align on the center line of the burner nozzles. See Fig. 1.FIG. 1 Schematic of Specim
27、en PlacementE2690 17a27.1.3 The caulk or sealant shall be applied directly to a fiber-cement board.7.1.4 Caulks and sealants shall be cured per manufacturers instructions prior to conditioning as specified in 6.1.7.2 Caulks and Sealants in Excess of 8 in. (203.2 mm) in width:7.2.1 Determine the surf
28、ace burning characteristics of caulks and sealants intended to be applied at over 8 in. (203.2 mm) inwidth by using the procedure outlined 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
29、 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 board up the ledges, in thethickness or at the coverage rate specified in the manufacturers instructions.7.2.1.4 Cure the caulk or sealant prior to testing.7.2.1.5 The tes
30、t specimen shall comply with the requirements of Section 6 of Test Method E84 and cover the full width of thetunnel.8. Testing of Specimens8.1 Testing shall be conducted using the methodology described in Test Method E84.9. Operator Safety9.1 The primary concerns for operator safety are associated w
31、ith the fire-test response procedure, Test Method E84, and not withthe specimen preparation procedure. Safety recommendations are included in Test Method E84.10. Report10.1 Report a detailed description of the specimen being tested.10.2 Report a detailed description of the specimen preparation metho
32、d used, per Section 7.10.3 Report all the information required in the reporting section of Test Method E84, including observations, graphical resultsand the values of the flame spread index and of the smoke developed index in each test.11. Keywords11.1 caulk; fire; fire test; flame spread; plastic;
33、sealants; smoke developedASTM 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 the riskof infring
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