ASTM E648-2017a 3125 Standard Test Method for Critical Radiant Flux of Floor-Covering Systems Using a Radiant Heat Energy Source《使用辐射热源法对地板覆盖物系统进行临界热辐射测试的标准试验方法》.pdf
《ASTM E648-2017a 3125 Standard Test Method for Critical Radiant Flux of Floor-Covering Systems Using a Radiant Heat Energy Source《使用辐射热源法对地板覆盖物系统进行临界热辐射测试的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM E648-2017a 3125 Standard Test Method for Critical Radiant Flux of Floor-Covering Systems Using a Radiant Heat Energy Source《使用辐射热源法对地板覆盖物系统进行临界热辐射测试的标准试验方法》.pdf(16页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E648 17a An American National StandardStandard Test Method forCritical Radiant Flux of Floor-Covering Systems Using aRadiant Heat Energy Source1This standard is issued under the fixed designation E648; the number immediately following the designation indicates the year oforiginal adopti
2、on 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.This standard has been approved for use by agencies of the U.S. Department of Defense.
3、1. Scope*1.1 This fire-test-response standard covers a procedure formeasuring the critical radiant flux of horizontally mountedfloor-covering systems exposed to a flaming ignition source ina graded radiant heat energy environment in a test chamber. Aspecimen is mounted over underlayment, a simulated
4、 concretestructural floor, bonded to a simulated structural floor, orotherwise mounted in a typical and representative way.1.2 This fire-test-response standard measures the criticalradiant flux at flame-out. It provides a basis for estimating oneaspect of fire exposure behavior for floor-covering sy
5、stems.The imposed radiant flux simulates the thermal radiation levelslikely to impinge on the floors of a building whose uppersurfaces are heated by flames or hot gases, or both, from a fullydeveloped fire in an adjacent room or compartment. Thestandard was developed to simulate an important fire ex
6、posurecomponent of fires that develop in corridors or exitways ofbuildings and is not intended for routine use in estimatingflame spread behavior of floor covering in building areas otherthan corridors or exitways. See Appendix X1 for informationon proper application and interpretation of experiment
7、al resultsfrom use of this test.1.3 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.4 The text of this standard references notes and footnotesthat provide explanatory information. These notes andfootnotes, excluding those in t
8、ables and figures, shall not beconsidered as requirements of this standard.1.5 This standard is used to measure and describe theresponse of materials, products, or assemblies to heat andflame under controlled conditions but does not by itselfincorporate all factors required for fire-hazard or fire-r
9、iskassessment of materials, products, or assemblies under actualfire conditions.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, health, and environmental p
10、ractices and deter-mine the applicability of regulatory limitations prior to use.Specific hazard statements are given in Section 7.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for
11、 theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C1186 Specification for Flat Fiber-Cement SheetsE122 Practice for Calculating Sample Size to Estimate,
12、WithSpecified Precision, the Average for a Characteristic of aLot or ProcessE136 Test Method for Behavior of Materials in a VerticalTube Furnace at 750CE171 Practice for Conditioning and Testing Flexible BarrierPackagingE176 Terminology of Fire Standards3. Terminology3.1 DefinitionsSee Terminology E
13、176 for additional defi-nitions.3.2 Definitions of Terms Specific to This Standard:3.2.1 blackbody temperature, nthe temperature of a per-fect radiatora surface with an emissivity of unity and,therefore, a reflectivity of zero.1This test method is under the jurisdiction of ASTM Committee E05 on Fire
14、Standards and is the direct responsibility of Subcommittee E05.22 on SurfaceBurning.Current edition approved Dec. 1, 2017. Published January 2018. Originallyapproved in 1978. Last previous edition approved in 2017 as E648 17. DOI:10.1520/E0648-17A.2For referenced ASTM standards, visit the ASTM websi
15、te, 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Dr
16、ive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations i
17、ssued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.13.2.2 corridor, nan enclosed space connecting a room orcompartment with an exit. The corridor includes normalextensions, such as lobbies and other enlarged spaces, wherepresent.3.2.3 critical radiant flux, nthe level
18、of incident radiantheat energy on the floor covering system at the most distantflame-out point. It is reported as W/cm2.3.2.4 flame-out, nthe time at which the last vestige offlame or glow disappears from the surface of the test specimen,frequently accompanied by a final puff of smoke.3.2.5 floor co
19、vering, nan essentially planar material hav-ing a relatively small thickness in comparison to its length orwidth, which is laid on a floor to enhance the beauty, comfort,and utility of the floor.3.2.6 floor covering system, na single material, compositeor assembly comprised of the floor covering and
20、 relatedinstallation components (adhesive, cushion, etc.), if any.3.2.7 flux profile, nthe curve relating incident radiant heatenergy on the specimen plane to distance from the point ofinitiation of flaming ignition, that is, 0 cm.3.2.8 time zero, nthe point in time when the chamber dooris closed, w
21、hich needs to occur within 3 s after the specimenhas been moved into the chamber (see 12.4).3.2.9 total flux meter, nthe instrument used to measure thelevel of radiant heat energy incident on the specimen plane atany point.4. Summary of Test Method4.1 The basic elements of the test chamber are (1) a
22、n air-gasfueled radiant heat energy panel inclined at 30 to and directedat (2) a horizontally mounted floor covering system specimen,Fig. 1. The radiant panel generates a radiant energy fluxdistribution ranging along the 100-cm length of the testspecimen from a nominal maximum of 1.0 W/cm2to aminimu
23、m of 0.1 W/cm2. The test is initiated by open-flameignition from a pilot burner. The distance burned to flame-outis converted to watts per square centimeter from the flux profilegraph, Fig. 2, and reported as critical radiant flux, W/cm2.5. Significance and Use5.1 This fire test response standard is
24、 designed to provide abasis for estimating one aspect of the fire exposure behavior ofa floor-covering system installed in a building corridor. The testenvironment is intended to simulate conditions that have beenobserved and defined in full scale corridor experiments.5.2 The test is intended to be
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