1、Designation: E859 93 (Reapproved 2011)Standard Test Method forAir Erosion of Sprayed Fire-Resistive Materials (SFRMs)Applied to Structural Members1This standard is issued under the fixed designation E859; 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 an air stream upon sprayed fire-resistive materials(SFRMs). These SFRMs include sprayed fibrous and cemen-titious materials. The test method is applicable only to labora-tory procedures.1.2 The values stated in SI units are to be regarded
4、 as thestandard. 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 concerns, if any, associated with its use. It is theresponsibility o
5、f 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 MaterialsE119 Test Methods for Fire Test
6、s of Building Constructionand MaterialsE605 Test Methods for Thickness and Density of SprayedFire-Resistive Material (SFRM) Applied to StructuralMembers2.2 Other Documents:ASHRAE Handbook, Fundamentals33. Terminology3.1 Definitions:3.1.1 denier, nthe number of grams per 9000 m.3.1.2 end (fabric), na
7、n individual warp yarn (single orply) cord.3.1.3 pick, nan individual filling yarn.3.2 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
8、 material is mixed withwater to form a slurry and is conveyed through a hose to anozzle 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, an
9、d aggregates, the material is conveyed by lowpressure air through a hose to a nozzle 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 sub
10、strates.4. Summary of Test Method4.1 This test method covers a procedure for determining 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 in
11、tervals to determine theamount of material removed from the sample.5. Significance and Use5.1 It is the intent of this test method to determine propertiesof SFRM that may be used to provide an indication ofserviceability. Satisfactory performance of SFRM applied tostructural members and assemblies d
12、epends upon its ability to1This 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. Originallyapproved in 1982. Last previous editio
13、n approved in 2006 as E859 93 (2006).DOI: 10.1520/E0859-93R11.2For 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
14、.3Available from American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA30329, http:/www.ashrae.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.withstand the
15、various influences that may occur during con-struction and during the life of the 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. Suc
16、h tests evaluatethe resistance to dusting, flaking, spalling, and delamination ofthe SFRM.6. Apparatus6.1 Duct System, made of galvanized steel, horizontallypositioned, with one rectangular opening 0.37 m2(4 ft2)inthecenter of the top of the duct and 50 mm (2 in.) from eachvertical side.6.2 Pitot Tu
17、be, used in conjunction with a suitable manom-eter, as described inASHRAE Handbook, Fundamentals, under“Velocity Measurement,” to measure air velocities 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.
18、4 Filters, upstream from the test specimen (at the blowerend) and located downstream of 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,
19、having a capacity of 100 g and a sensitivity of60.001 g.7. Materials7.1 This test method requires 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
20、in thefield.7.2 The density of the prepared sample shall be similar tothe density tested and 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 Appli
21、cation BaseAny rigid base that is capable ofsupporting the SFRM. The minimum area of the base shall be0.37 m2(4 ft2) with the SFRM applied at 19 mm 6 3mm(34in. 618 in.) thickness.8.3 Prepare duplicate specimens and allow to dry and cureat a temperature of 20 6 10C (68 6 18F) and a relativehumidity n
22、ot greater than 60 % until successive weight read-ings, taken at 24 h intervals, differ by less than 1 %.49. Procedure9.1 Test one specimen to determine thickness and density inaccordance with Test Methods E605.9.2 Dry the collecting filter at 50C (120F) for 1 h, weigh,and place in the apparatus.9.3
23、 Place the second specimen into the duct opening so thatthe face of the specimen and the inside face 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 specim
24、en at the center line of the duct and 50 mm(2 in.) below the top side of the duct.9.5 With both filters and 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 r
25、eweighthe collecting filter. If the collecting filter continues to show aweight gain at 24 h, continue the test, making measurementsevery 24 h until a constant weight is reached.10. Report10.1 Report the weight of the collecting filter in gramsbefore and after each test interval. After each interval
26、, recordthe net weight gain both individually and cumulatively. Alsoreport the total net weight gain.10.2 Report the thickness in millimetres (or inches) and thedensity in kilograms per cubic metre (or pounds per cubic foot)of the specimen.10.3 Indicate the techniques such as tamping, troweling,surf
27、ace sealing, or similar finishing operations and the extentthat they are made.10.4 Report the date of test, date of report, and name of theperson 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 added
28、when completed.12. Keywords12.1 air erosion; sprayed cementitious material; sprayedfibrous material; sprayed fire-resistive materials4Although mass is being determined, the term weigh is used as an acceptedsubstitute.E859 93 (2011)2ASTM International takes no position respecting the validity of any
29、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.This standard is subject to revis
30、ion 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 International Headquarters. Your c
31、omments 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 shown below.This standard is copyrig
32、hted 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 ASTM website (www.astm.org/COPYRIGHT/).E859 93 (2011)3
