1、Designation: E859/E859M 93 (Reapproved 2015)1Standard Test Method forAir Erosion of Sprayed Fire-Resistive Materials (SFRMs)Applied to Structural Members1This standard is issued under the fixed designation E859/E859M; the number immediately following the designation indicates the yearof original ado
2、ption 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 of Defen
3、se.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 an air stream upon sprayed fire-resistive materials(SFRMs). These SFRMs include sprayed fibrous and cemen-titious materi
4、als. The test method is applicable only to labora-tory procedures.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combi
5、ningvalues 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 its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and dete
6、rmine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE119 Test Methods for Fire Tests of Building Constructionand MaterialsE605/E605M Test Methods for Thickness and Density o
7、fSprayed Fire-Resistive Material (SFRM) Applied toStructural Members2.2 Other Documents:ASHRAE Handbook, Fundamentals33. Terminology3.1 Definitions:3.1.1 denier, nthe number of grams per 9000 m.3.1.2 end (fabric), nan individual warp yarn (single orply) cord.3.1.3 pick, nan individual filling yarn.3
8、.2 Definitions of Terms Specific to This Standard:3.2.1 air erosionthe action or process of being eroded byan air stream.3.2.2 sprayed cementitious materialconsisting of one ormore binders, aggregate, and fibers, the material is mixed withwater to form a slurry and is conveyed through a hose to anoz
9、zle where compressed air is typically used to disperse thematerial into a spray pattern and air directed to the substraterequiring protection.3.2.3 sprayed fibrous materialconsisting of one or morebinders, fibers, and aggregates, the material is conveyed by lowpressure air through a hose to a nozzle
10、 where it is mixed withatomized water and directed to the substrate requiring protec-tion.3.2.4 sprayed fire-resistive materialsmaterials that aresprayed onto substrates to provide fire-resistive protection ofthe substrates.4. Summary of Test Method4.1 This test method covers a procedure for determi
11、ning theeffect of an air stream upon SFRM in plenums. In this testmethod, the SFRM is subjected to a tangential air stream for aminimum of 24 h. Collection filters downstream from thesample are weighed at frequent intervals to determine theamount of material removed from the sample.1This test method
12、 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 1982. Last previous edition approved in 2011 as E859 93 (2011).DOI:
13、 10.1520/E0859-93R15E01.2For 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 page onthe ASTM website.3Available from American Society of H
14、eating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA30329, http:/www.ashrae.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15. Significance and Use5.1 It is the intent of this t
15、est method to determine propertiesof SFRM that may be used to provide an indication ofserviceability. Satisfactory performance of SFRM applied tostructural members and assemblies depends upon its ability towithstand the various influences that may occur during con-struction and during the life of th
16、e structure, as well as upon itsperformance under fire conditions.5.2 Air erosion tests on SFRMs are conducted to evaluatethe behavior of the SFRM when subjected to plenum airstreams during normal service conditions. Such tests evaluatethe resistance to dusting, flaking, spalling, and delamination o
17、fthe SFRM.6. Apparatus6.1 Duct System, made of galvanized steel, horizontallypositioned, with one rectangular opening 0.37 m24 ft2inthecenter of the top of the duct and 50 mm 2 in. from eachvertical side.6.2 Pitot Tube, used in conjunction with a suitablemanometer, as described in ASHRAE Handbook,Fu
18、ndamentals, under “Velocity Measurement,” to measure airvelocities in the duct.6.3 Blower, capable of moving air through the entire crosssection of the duct at a velocity sufficient to handle the testrequirement.6.4 Filters, upstream from the test specimen (at the blowerend) and located downstream o
19、f the test specimen. These filtersshall be made of 30-denier nylon. The nominal construction ofthe fabric shall be 37 ends per 10 mm 94 ends per in., and32 picks per 10 mm 81 picks per in., or finer.6.5 Scale, having a capacity of 100 g and a sensitivity of60.001 g.7. Materials7.1 This test method r
20、equires the application of SFRM inaccordance with manufacturers published instructions. Theapparatus, materials, and procedures used to apply the SFRMfor this test method shall be representative of application in thefield.7.2 The density of the prepared sample shall be similar tothe density tested a
21、nd reported during the Test Methods E119and E84 fire exposures or as required by the sponsor of the testmethod.8. Test Specimen8.1 The test specimen shall consist of SFRM applied to anapplication base.8.2 Application BaseAny rigid base that is capable ofsupporting the SFRM. The minimum area of the b
22、ase shall be0.37 m24 ft2 with the SFRM applied at 19 6 3mm34 618in. thickness.8.3 Prepare duplicate specimens and allow to dry and cureat a temperature of 20 6 10C 68 6 18F and a relativehumidity not greater than 60 % until successive weightreadings, taken at 24 h intervals, differ by less than 1 %.
23、49. Procedure9.1 Test one specimen to determine thickness and density inaccordance with Test Methods E605/E605M.9.2 Dry the collecting filter at 50C 120F for 1 h, weigh,and place in the apparatus.9.3 Place the second specimen into the duct opening so thatthe face of the specimen and the inside face
24、of the duct arepositioned flush and in the same plane. All edges shall extendat least 50 mm 2 in. beyond the duct opening.9.4 Place the pitot tube 100 mm 4 in. from the upstreamedge of the specimen at the center line of the duct and 50 mm2 in. below the top side of the duct.9.5 With both filters and
25、 the specimen in position, maintainthe blower at the velocity of 6 m/s 20 ft/s.9.6 At elapsed times of 1, 6, and 24 h, stop the blower andcarefully remove, fold, dry at 50C 120F, and then reweighthe collecting filter. If the collecting filter continues to show aweight gain at 24 h, continue the test
26、, making measurementsevery 24 h until a constant weight is reached.10. Report10.1 Report the following information:10.1.1 Report the weight of the collecting filter in gramsbefore and after each test interval. After each interval, recordthe net weight gain both individually and cumulatively. Alsorep
27、ort the total net weight gain.10.1.2 Report the thickness in millimetres or inches andthe density in kilograms per cubic metre or pounds per cubicfoot of the specimen.10.1.3 Indicate the techniques such as tamping, troweling,surface sealing, or similar finishing operations and the extentthat they ar
28、e made.10.1.4 Report the date of test, date of report, and name ofthe person making test.11. Precision and Bias11.1 The precision and bias of this test method has not beendetermined. A statement is being developed and will be addedwhen completed.12. Keywords12.1 air erosion; sprayed cementitious mat
29、erial; sprayedfibrous material; sprayed fire-resistive materials4Although mass is being determined, the term weigh is used as an acceptedsubstitute.E859/E859M 93 (Reapproved 2015)12ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item
30、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 responsible technical commit
31、tee 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 consideration at a mee
32、ting 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, 100 Barr Harbor Drive,
33、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:/ 93 (Reapproved 2015)13
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