1、Designation: E760/E760M 92 (Reapproved 2015)1Standard Test Method forEffect of Impact on Bonding of Sprayed Fire-ResistiveMaterial Applied to Structural Members1This standard is issued under the fixed designation E760/E760M; the number immediately following the designation indicates the yearof origi
2、nal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript 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 o
3、f Defense.1NOTEDesignation was changed to dual and units information was corrected editorially in August 2015.1. Scope1.1 This test method covers a procedure for determining theeffect of impact loading on the bonding of sprayed fire-resistivematerial (SFRM) applied to the underside of steel floor de
4、ck.These materials include sprayed fibrous and cementitiousmaterials applied directly in contact with the structural mem-bers. The test method is applicable only to laboratory proce-dures.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The value
5、s stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with it
6、s 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 Characteristics ofBuilding Material
7、sE119 Test Methods for Fire Tests of Building Constructionand MaterialsE605/E605M Test Methods for Thickness and Density ofSprayed Fire-Resistive Material (SFRM) Applied toStructural MembersE695 Test Method of Measuring Relative Resistance ofWall, Floor, and Roof Construction to Impact Loading3. Sum
8、mary of Test Method3.1 In this test method, a cellular steel deck with a concretetopping sprayed with fire-resistive material is subjected to aleather bag drop impact while supported horizontally at itsends.4. Significance and Use4.1 The intent of this test method is to determine a propertyof SFRM t
9、hat may be used to provide an indication of itsin-place serviceability. Satisfactory performance of SFRMapplied to structural members and assemblies depends upon itsability to withstand the various influences that may occurduring construction and during the life of the structure, as wellas upon its
10、satisfactory performance under fire conditions.4.2 The test method measures the behavior of SFRM whenthe floor construction to which it is applied is subjected toshock loading and evaluates adhesion and resistance tospalling, cracking, and delamination. It is an indication of theability of SFRM to r
11、emain in place and resist removal duringanticipated service conditions.5. Apparatus5.1 SupportsRigid base to provide at least 50 mm 2 in.bearing and a clear span between supports of at least 3 m10 ft.5.2 Impact InstrumentA lead shot- or steel shot-filledleather bag weighing 27.2 kg 60 lb and equippe
12、d with aleather hoisting strap, both as described in Test Method E695.5.3 RuleTo measure the height of drop (1.2 m 4 ft) withan accuracy of 12.8 mm 12 in.6. Materials6.1 The test specimen shall be a deck assembly consisting ofcellular steel deck and a concrete topping. The cellular steeldeck shall b
13、e of the noncomposite type, nominal 40 mm 1121This 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 Aug. 1, 2015. Published August 2015. Originallyapproved in 1980.
14、 Last previous edition approved in 2011 as E760 92 (2011).DOI: 10.1520/E0760-92R15E01.2For 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 Document Summary
15、 page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1in. deep, 600 mm 24 in. wide, by 3600 mm 2 ft long,consisting of a 1.5-mm 0.060-in. thick galvanized or paintedsteel fluted top section and 1.2-mm 0.048-in. galv
16、anized steelflat bottom section welded together to form four cells 150 mm6 in. on center.6.2 The concrete shall be nominal 20 MPa 3000 psi, and64 mm 212 in. deep as measured from the top plane to thesteel decking.6.3 This test method requires the application of SFRM inaccordance with manufacturers p
17、ublished instructions. Theapparatus, materials, and procedures used to apply the SFRMfor this test shall be representative of application in the field.6.4 The density of the prepared sample shall be similar tothe density tested and reported during the Test Methods E119and Test Method E84 fire exposu
18、re tests or as required by thesponsor of the test.6.5 Determine the density and thickness of each of thelaboratory-prepared specimens. Report in accordance with TestMethods E605/E605M.7. Test Specimen7.1 Laboratory Tests:7.1.1 Apply the SFRM to the underside of the steel deck nosooner than seven day
19、s after the concrete has been placed. Donot apply the SFRM to the area 330 mm 13 in. in from eachend of the specimen, in order to permit the steel deck to beardirectly on the supports.7.1.2 Condition the prepared specimen for a period of notless than one week at ambient temperature and humiditycondi
20、tions (not less than 4.4C 40F).7.1.3 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 lower surface and the concrete as the upper surface.8.2 Hoist the b
21、ag to a height of 1.2 m 4 ft as measuredfrom the upper face of the specimen to the bottom of the bag.8.3 Apply an impact load once to the middle of the upperface of the specimen by dropping the leather bag.9. Report9.1 Report the following information:9.1.1 A complete description of the overall spec
22、imen, in-cluding the final physical condition and appearance of theSFRM after impact,9.1.2 Any spalling, delamination, cracking, and9.1.3 Thickness in millimetres or inches and the density ofthe SFRM in kilograms per cubic metre or pounds per cubicfoot.10. Precision and Bias10.1 No statement is made
23、 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. Keywords11.1 impact loading; sprayed fire-resistive material; steelfloor deckASTM International takes no position
24、 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 infringement of such rights, are entirely their own responsibility.T
25、his 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 comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM In
26、ternational Headquarters. Your comments 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 show
27、n 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 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 92 (Reapproved 2015)12
