ASTM_E_2785_-_14.pdf

Designation:E278514Standard Test Method forExposure of Firestop Materials to Severe EnvironmentalConditions1This standard is issued under the fixed designation E2785;the number immediately following the designation indicates the year oforiginal adoption or,in 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.INTRODUCTIONFirestops are installed in buildings to prevent the spread of fire.Each firestop design is dependenton its specific arrangement,thickness,density,and shape of materials used in its construction and uponthe specific assembly in which it is fire tested.There are at least five types of materials used infirestops.They are endothermic,intumescent,insulative,subliming,and ablative.Some firestops usemore than one type in a specific design.The purpose of this test method is to provide a common setof procedures for evaluating the potential behavior of materials used in firestops to variousenvironmental conditions.There are other materials used in firestop systems that are not of the fivetypes listed above,which are not intended to be evaluated by this test method.1.Scope1.1 This test method evaluates a change in physicalproperties,chemical properties,or both,of firestop materialsafter a standardized environmental exposure.This test methoddoes not evaluate the fire performance of the firestop materials.1.2 This test method establishes indicators that will aid indetermining the use of the tested material in buildings.1.3 This test method evaluates the properties of componentproducts used within a firestop system,and does not evaluatethe properties of assembled firestop systems.NOTE1This test method does not preclude the possibility of exposingcomplete firestop systems to one or more severe environmental exposuresand then exposing the complete firestop system to a fire test.1.4 This test method is intended to be a screening method inthe evaluation of the relative behavior of a specific materialbefore and after a standardized set of severe exposure criteria.Individual tests are not intended to be the only determiningfactor in evaluating or selecting a firestop material becauseeach test has limitations.1.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.6 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 determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC1442 Practice for Conducting Tests on Sealants UsingArtificial Weathering ApparatusD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD870 Practice for Testing Water Resistance of CoatingsUsing Water ImmersionD2041/D2041M Test Method for Theoretical MaximumSpecific Gravity and Density of Bituminous Paving Mix-turesD3045 Practice for Heat Aging of Plastics Without LoadD3850 Test Method for Rapid Thermal Degradation of SolidElectrical Insulating Materials By ThermogravimetricMethod(TGA)D4434/D4434M Specification for Poly(Vinyl Chloride)Sheet Roofing1This 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 May 1,2014.Published May 2014.Originallyapproved in 2011.Last previous edition approved in 2011 as E278511.DOI:10.1520/E2785-14.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D4637/D4637M Specification for EPDM Sheet Used InSingle-Ply Roof MembraneD4714 Test Method for Determination of Effect of MoistHeat(50%Relative Humidity and 90C)on Properties ofPaper and Board(Withdrawn 2010)3D5510 Practice for Heat Aging of Oxidatively DegradablePlastics(Withdrawn 2010)3D5893/D5893M Specification for Cold Applied,SingleComponent,Chemically Curing Silicone Joint Sealant forPortland Cement Concrete PavementsD6083 Specification for Liquid Applied Acrylic CoatingUsed in RoofingD6754/D6754M Specification for Ketone Ethylene EsterBased Sheet RoofingD6878/D6878M Specification for Thermoplastic PolyolefinBased Sheet RoofingD6947/D6947M Specification for Liquid Applied MoistureCured Polyurethane Coating Used in Spray PolyurethaneFoam Roofing SystemE84 Test Method for Surfac