1、Designation: E736/E736M 00 (Reapproved 2015)1Standard Test Method forCohesion/Adhesion of Sprayed Fire-Resistive MaterialsApplied to Structural Members1This standard is issued under the fixed designation E736/E736M; the number immediately following the designation indicates the yearof original adopt
2、ion 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 Defense
3、.1NOTEDesignation was changed to dual and units information was corrected editorially in September 2015.1. Scope1.1 This test method covers a procedure for measuring thecohesion/adhesion or bond strength (tensile) perpendicular tothe surface of sprayed fire-resistive material (SFRM) applied torigid
4、backing. These fire-resistive materials include sprayedfibrous and cementitious materials. The test method is appli-cable to both laboratory and field procedures as indicated inSection 7.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values
5、 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 problems, if any, associated with its
6、 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 Materials
7、E119 Test Methods for Fire Tests of Building Constructionand MaterialsE605/E605M Test Methods for Thickness and Density ofSprayed Fire-Resistive Material (SFRM) Applied toStructural Members3. Summary of Test Method3.1 The cohesion/adhesion is determined using a metal orplastic cap with a hook attach
8、ed. The cap is attached to theSFRM with a suitable adhesive. An increasing load, measuredby a scale, is applied manually until failure occurs.4. Significance and Use4.1 The intent of this test method is to determine a propertyof SFRM that may be used to provide an indication of itsin-place serviceab
9、ility. 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 satisfactory performance under fire conditions.5. Apparatus5.1 Fi
10、g. 1 illustrates a suitable apparatus.5.2 Bottle Screw Cap,3metal or rigid plastic 51 mm to83 mm 2 in. to 314 in. in diameter and 12 mm 12 in. innominal depth. A hook shall be attached at the center. Wheredeck profile does not allow the use of an 83-mm 314-in.diameter cap due to area restriction, a
11、minimum 51-mm 2-in.diameter cap shall be used.5.3 Adhesive, single or two component, suitable for adher-ing cap to SFRM.45.4 Weighing Scale, spring type (fish hook), with a capacitysuitable for the SFRM being tested (typically 12 kg to 30 kg26 to 66 lb capacity). The accuracy shall be within 0.1 kg
12、14lb.5.5 Galvanized Steel Sheet, 1.5 mm 0.060 in. (16 ga)thick, 300 mm 12 in. square, cleaned with solvent to removeany oil from surface to be sprayed.1This test method is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.21o
13、n Serviceability.Current edition approved Sept. 1, 2015. Published September 2015. Originallyapproved in 1980. Last previous edition approved in 2011 as E736 00 (2011).DOI: 10.1520/E0736_E0736M-00R15E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Ser
14、vice at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Refer to Appendix X1.2 for a list of bottle screw cap supply houses that havebeen found satisfactory for this purpose. Many local suppliers are also availabl
15、e.4Suitable adhesives are commercially available. Refer to Appendix X1.1 for alist of adhesive supply houses that have been found satisfactory for this purpose.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15.6 Drying Oven, capable o
16、f maintaining temperature andhumidity conditions during the specimen curing cycle, inaccordance with the SFRM manufacturers published require-ments.6. Sampling6.1 This test method requires the application of SFRM inaccordance with manufacturers published instructions. Theapparatus, materials, and pr
17、ocedures used to spray apply theSFRM for this test shall be representative of application in thefield.6.2 The density of the prepared specimens shall be similarto the density tested and reported during the Test Methods E84and E119 fire exposure tests of the same material, or asrequired by the sponso
18、r of the test.6.3 Determine and report in accordance with Test MethodsE605/E605M the density and thickness of each sample, or of arandomly selected specimen from the sample lot when anumber of identical samples are being tested for the laboratory-prepared samples. For the field specimens, determine
19、thedensity from material adjacent to the test specimen.7. Test Specimen7.1 Laboratory Tests:7.1.1 The SFRM shall be applied at a thickness of 12 mm to25 mm 12 in. to 1 in. to the 300 by 300 mm 12 by 12 in.galvanized steel sheet.7.1.2 Condition the specimen at room temperature(20 6 10C 68 6 18F). Aft
20、er 72 h, samples may be forcedried in a drying oven at 43 6 6C 110 6 10F, and arelative humidity not greater than 60 % until successiveweight5readings, taken at 8 h intervals, differ by less thanonwpercent.7.1.3 Testing may be performed after it has been determinedthat all samples have reached const
21、ant weight as defined in7.1.2.7.2 Field Tests:7.2.1 The test specimen shall be the in-place SFRM asapplied to any field condition surface. Where a 300 by 300-mm12 by 12-in. area is not available, such as on beams and fluteddeck, use the width of the beam or the width of a flute by300 mm 12 in. lengt
22、h. The area shall be at least 100 by300 mm 4 by 12 in. See 5.2 for exceptions.7.2.2 Condition the specimen at atmospheric conditions orin accordance with the manufacturers recommendations for aperiod sufficient to be considered dry.7.2.3 Mechanical ventilation may be employed on themanufacturers rec
23、ommendation to expedite drying.8. Procedure8.1 Apply adhesive sufficient to fill the metal or plastic cap,and immediately place the cap against the surface of theSFRM. Refer to Fig. 2.8.2 Support the cap at the surface until the adhesive hasadequately cured. Wipe away any excess adhesive around thec
24、ap before it cures, or carefully cut it away after it cures.8.3 Laboratory Tests:8.3.1 Restrain the specimen with the SFRM facing up toprevent movement and flexing during testing. The orientationof the specimen in Fig. 2 shows the SFRM facing down.8.3.2 Engage the scale with the hook and exert an in
25、creasingforce at a minimum uniform or incremental rate of approxi-mately 5 kg 11 lb min perpendicular to the surface.8.3.3 Force shall be applied until failure occurs, a predeter-mined value is reached, or until the capacity of the scale isreached.8.3.4 Record the force in newtons pounds-force at th
26、e timefailure occurs or other end point is reached.8.4 Field Tests:8.4.1 Perform tests as described in 8.3.2 8.3.4.8.4.2 A nondestructive field test may be performed byreplacing the scale (see 5.4) with a fixed weight that must besupported for 1 min.9. Calculation9.1 Calculate the cohesive/adhesive
27、force (bond strength) asfollows:CA 5 F/A (1)where:CA = cohesive/adhesive force, Pa lb/ft2,F = recorded force, N lbf, andA = area of the cap, m2ft2.10. Report10.1 Report the following information:10.1.1 Force, newtons pounds force,5Although mass is being determined, the term weight is used in the tes
28、t methodas an accepted substitute.FIG. 1 Typical Cohesion/Adhesion Testing ApparatusFIG. 2 In-Place ApparatusE736/E736M 00 (2015)1210.1.2 Cohesive/adhesive force (bond strength), pascalspounds force per square foot,10.1.3 Description of the type of failure:10.1.3.1 Cohesive failure, if separation oc
29、curred within thematerial,10.1.3.2 Adhesive failure, if separation occurred at theinterface of the substrate and the SFRM,10.1.4 Approximate area of material involved in the failure,if it extends beyond the perimeter of the cap,10.1.5 Thickness of the SFRM, millimetres inches, and10.1.6 Density of t
30、he SFRM, kilograms per cubic metrepounds per cubic foot.11. Precision and Bias11.1 PrecisionThe precision of this test method is beingdeveloped and will be added when available.11.2 BiasThe procedure on this test method has no biasbecause the value of the cohesive/adhesive strength can bedefined onl
31、y in terms of a test method.12. Keywords12.1 cohesion/adhesion testing; fire-resistive materials;sprayed materials testingAPPENDIX(Nonmandatory Information)X1. TEST APPARATUSX1.1 Two-component urethane resin adhesives for use inadhering test caps to SFRM during bond strength testing areavailable fro
32、m various sources of supply, including those listedas follows: Contact the adhesive manufacturer to determineproduct suitability.Brim Products Co., Inc. C 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:/ 00 (2015)13
