1、Designation: E759 92 (Reapproved 2011)Standard Test Method forEffect of Deflection on Sprayed Fire-Resistive MaterialApplied to Structural Members1This standard is issued under the fixed designation E759; the number immediately following the designation indicates the year oforiginal adoption or, in
2、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 Department of Defense.1. Scope1.1 Thi
3、s test method covers a procedure for determining theeffect of deflection on sprayed fire-resistive material (SFRM)applied to steel deck. These materials include sprayed fibrousand cementitious materials applied directly in contact with thestructural members. The test method is applicable only tolabo
4、ratory procedures.1.2 The values stated in SI units are to be regarded asstandard. The values given in parentheses are mathematicalconversions to inch-pound units that are provided for informa-tion only and are not considered standard.1.3 This standard does not purport to address all of thesafety co
5、ncerns, 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 applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E84 Test Method for Surface Burning C
6、haracteristics ofBuilding MaterialsE119 Test Methods for Fire Tests of Building Constructionand MaterialsE605 Test Methods for Thickness and Density of SprayedFire-Resistive Material (SFRM) Applied to StructuralMembers3. Summary of Test Method3.1 In this test method, a cellular steel deck panel spra
7、yedwith fire-resistive material is subjected to bending by a verticalcenter load while supported horizontally at its ends.4. Significance and Use4.1 The intent of this test method is to determine propertiesof direct-applied SFRM that may be used to provide anindication of serviceability. Satisfactor
8、y performance of fire-resistive material applied to structural members and assembliesdepends upon its ability while in place to withstand the variousinfluences that may occur during the life of the structure, aswell as upon its satisfactory performance under fire tests.4.2 This test method measures
9、the behavior of SFRM whensubjected to deflection and evaluates such phenomena asspalling and delamination under bending stress. It is anindication of the ability of SFRM to remain in place and resistremoval during anticipated service conditions.5. Apparatus5.1 SupportsRigid base to provide at least
10、50 mm (2 in.)bearing and a clear span between supports of 3 m (10 ft).5.2 Bearing BlockApproximately 50 mm (2 in.) wide,minimum 600 mm (24 in.) long bearing surface designed todistribute the load across the width of the specimen.5.3 LoadAny form of weights or testing machine capableof applying a loa
11、d normal to the test surface and of developinga deflection of1120 of the clear span of the specimen.5.4 Deflection Gage A dial or digital micrometer gradu-ated to 0.01 mm (0.001 in.).6. Materials and Manufacture6.1 The specimen shall consist of cellular steel deck nomi-nal 40 mm (112 in.) deep, 600
12、mm (24 in.) wide, by 3600 mm(12 ft) long, consisting of a 1.5 mm (0.060 in. (18 ga.) thickgalvanized steel fluted top section and a 1.2-mm (0.048-in.)galvanized steel flat bottom section welded together to formfour cells 150 mm (6 in.) on center.6.2 This test method requires the application of SFRM
13、inaccordance with manufacturers published instructions. Theapparatus, materials, and procedures used to apply the SFRMfor this test shall be representative of application in the field.6.3 The density of the prepared sample shall be similar tothe density tested and reported during the Test Methods E8
14、4and E119 fire exposures or as required by the sponsor of thetest.1This test method is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.21on Serviceability.Current edition approved April 1, 2011. Published May 2011. Original
15、lyapproved in 1980. Last previous edition approved in 2005 as E759 92 (2005).DOI: 10.1520/E0759-92R11.2For 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
16、Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.4 Determine the density and thickness of each of thelaboratory-prepared specimens. Report in accordance with TestMethods E605.7. Test Specimen
17、7.1 Apply the SFRM to the underside of the steel deck at aminimum 19 mm (34 in.) thickness. Do not apply the SFRM tothe area 330 mm (13 in.) from each end of the specimen, inorder to permit the steel deck to bear directly on the supports.7.2 Condition the prepared specimen for a period of not lessth
18、an one week at ambient temperature and humidity conditions(but not less than 4.4C (40F) until cured.7.3 Condition the specimen for a period sufficient to beconsidered dry in accordance with the manufacturers recom-mendation.8. Procedure8.1 Place the specimen on the test supports with the SFRMas the
19、lower surface.8.2 To measure the deflection of the specimen, record theinitial reading of the dial micrometer prior to the application ofthe load and record the deformation as the load is applied.8.3 Apply a vertical center load to the upper face of thespecimen by means of a bearing block to develop
20、 a deflectionof1120 of the clear span, that is, 25 mm (1.0 in.).9. Report9.1 Report the following information:9.1.1 Condition of the test specimen when it has deflectedthe required1120 the clear span,9.1.2 Any spalling or delamination, and9.1.3 Thickness of the SFRM in millimetres (or inches) andthe
21、 density in kilograms per cubic metre (or pounds per cubicfoot).10. Precision and Bias10.1 No statement is made about either precision or bias ofthis test method since the results merely describe qualitativelythe physical condition of the test specimen after exposure to thespecified procedure.11. Ke
22、ywords11.1 deflection; sprayed cementitious; sprayed-fire-resistivematerials (SFRM)ASTM 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
23、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 responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your
24、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 consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments h
25、ave 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, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multip
26、le 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/).E759 92 (2011)2
