1、Designation:C73917Standard Specification forCellulosic Fiber Loose-Fill Thermal Insulation1This standard is issued under the fixed designation C739;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
2、 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 U.S.Department of Defense.1.Scope1.1 This specification covers the composition and physicalrequireme
3、nts of chemically treated,recycled cellulosic fiberloose-fill type thermal insulation for use in attics or enclosedspaces in housing,and other framed buildings within theambient temperature range from 45 to 90C by pneumatic orpouring application.While products that comply with thisspecification are
4、used in various constructions,they are adapt-able primarily,but not exclusively,to wood joist,rafters,andstud construction.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of t
5、hesafety 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.1.4 This international standard was developed in accor-dance with intern
6、ationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2B152/B152M
7、 Specification for Copper Sheet,Strip,Plate,and Rolled BarC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC518 Test Method for Steady-State Thermal TransmissionPrope
8、rties by Means of the Heat Flow Meter ApparatusC687 Practice for Determination of Thermal Resistance ofLoose-Fill Building InsulationC1114 Test Method for Steady-State Thermal TransmissionProperties by Means of the Thin-Heater ApparatusC1338 Test Method for Determining Fungi Resistance ofInsulation
9、Materials and FacingsC1363 Test Method for Thermal Performance of BuildingMaterials and Envelope Assemblies by Means of a HotBox ApparatusC1374 Test Method for Determination of Installed Thick-ness of Pneumatically Applied Loose-Fill Building Insu-lationC1485 Test Method for Critical Radiant Flux of
10、 ExposedAttic Floor Insulation Using an Electric Radiant HeatEnergy SourceE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE970 Test Method for Critical Radiant Flux of ExposedAtti
11、cFloor Insulation Using a Radiant Heat Energy Source3.Terminology3.1 DefinitionsFor definitions of terms used in thisspecification,see Terminology C168.3.2 Definitions of Terms Specific to This Standard:3.2.1 attican enclosed space between the roof and ceilingof the occupied part of a building.3.2.2
12、 critical radiant fluxthe level of incident radiant heatenergy on the attic floor insulation system at the most distantflame-out point(W/cm2).4.Materials and Manufacture4.1 The basic material shall be recycled cellulosic fibermade from selected paper,paperboard stock,or ground woodstock,excluding co
13、ntaminated materials,which may reason-ably be expected to be retained in the finished product.Suitablechemicals are introduced to provide properties such as flameresistance,processing,and handling characteristics.1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulatio
14、n and is the direct responsibility of Subcommittee C16.23 onBlanket and Loose Fill Insulation.Current edition approved June 1,2017.Published August 2017.Originallyapproved 1973.Last previous edition approved 2011 as C739 11.DOI:10.1520/C0739-17.2For referenced ASTM standards,visit the ASTM website,w
15、ww.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 StatesThis internat
16、ional standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 4.2 The basic material may be processed into a formsuitable for installation by pneumatic or pouring methods.5.Physical and Chemical Properties5.1 Design DensityThe design density shall be determin
