1、Designation: C 739 05be1Standard Specification forCellulosic Fiber Loose-Fill Thermal Insulation1This standard is issued under the fixed designation C 739; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.e1NOTETable 3 was editorially corrected in May 2007.1. Scope1.1
3、 This specification covers the composition and physicalrequirements 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 (49 to 194F)by pneumati
4、c or pouring application. While products thatcomply with this specification are used in various construc-tions, they are adaptable primarily, but not exclusively, to woodjoist, rafters, and stud construction.1.2 The values stated in SI units are to be regarded as thestandard. The values in parenthes
5、es are provided for informa-tion only.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 determine the applica-bility of regulatory li
6、mitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B 152 Specification for Copper Sheet, Strip, Plate, andRolled BarC 168 Terminology Relating to Thermal InsulationC 177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot
7、-Plate ApparatusC 518 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Heat Flow Meter ApparatusC 687 Practice for Determination of Thermal Resistance ofLoose-Fill Building InsulationC 1045 Practice for Calculating Thermal TransmissionProperties
8、 from Steady-State ConditionsC 1114 Test Method for Steady-State Thermal TransmissionProperties by Means of the Thin-Heater ApparatusC 1374 Test Method for Determination of Installed Thick-ness of Pneumatically Applied Loose-Fill Building Insula-tionC 1363 Test Method for Thermal Performance of Buil
9、dingMaterials and Envelope Assemblies by Means of a HotBox ApparatusC 1485 Test Method for Critical Radiant Flux of ExposedAttic Floor Insulation Using an Electric Radiant HeatEnergy SourceE 970 Test Method for Critical Radiant Flux of ExposedAttic Floor Insulation Using a Radiant Heat Energy Source
10、3. Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication, see Terminology C 168.3.2 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 critical radiant fluxthe level of incident rad
11、iant heatenergy on the attic floor insulation system at the most distantflame-out point (W/cm2(Btu/ft2 s).4. Materials and Manufacture4.1 The basic material shall be recycled cellulosic fibermade from selected paper, paperboard stock, or ground woodstock, excluding contaminated materials, which may
12、reason-ably be expected to be retained in the finished product. Suitablechemicals are introduced to provide properties such as flameresistance, processing, and handling characteristics.4.2 The basic material may be processed into a formsuitable for installation by pneumatic or pouring methods.1This
13、specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.23 onBlanket and Loose Fill Insulation.Current edition approved Nov. 15, 2005. Published December 2005. Originallyapproved 1973. Last previous edition approved 2005
14、 C 739 05a.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.1Copyright ASTM International, 100 Barr Harbor Dri
15、ve, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Physical and Chemical Properties5.1 Design DensityThe design density shall be deter-mined in accordance with Section 8. Report all units in kg/m3(lb/ft3).5.1.1 Design density is not a basis for acceptance orrejection.5.2 Corrosivene
16、ssThe loose-fill insulation material shallbe tested for corrosiveness as specified in Section 9. Thecomposition of the insulation material shall be such that aftertesting, no perforation of the 3-mil (76-m) metal specimensshall be evident when the specimens are observed over a 40-Wappliance light bu
17、lb. Notches extending into the coupon 3 mmor less from any edge shall be ignored.5.3 Critical Radiant FluxWhen tested in accordance withSection 10, the critical radiant flux shall be equal to greaterthan 0.12 W/cm2(0.11 Btu/ft2 s). All values shall be reportedto two significant digits.5.4 Fungi Resi
18、stanceThe loose-fill insulation materialshall be tested and shall pass fungi resistance as specified inSection 11. If the growth on two or more of the replicate testitems is greater than that on the comparative item, the test itemshall be considered to fail.NOTE 1If the manufacturing claims the insu
19、lation kills or controlsinsects or rodents, or both, the product must be registered as a pesticideunder the Federal Insecticide, Fungicide and Rodentic Act, as amended,and must also be registered in accordance with state pesticide statutes.5.5 Moisture Vapor SorptionMoisture gain in the insula-tion
20、shall be no more than 15 % by weight when tested inaccordance with Section 12.5.6 Odor EmissionAny sample producing a detectableodor that is classified as objectionable and strong or very strongby more than two panel members shall be considered to havefailed the test when tested in accordance with S
21、ection 13.5.7 Smoldering CombustionWhen tested in accordancewith the smoldering combustion test method in Section 14, theinsulation shall show no evidence of flaming and a weight lossno greater than 15 %.5.8 Thermal ResistanceThe standard thermal resistancevalues normally recommended for open applic
22、ation are: 2.3,3.4., 3.9, 5.3, 6.7, and 8.6 (13, 19, 22, 30, 38 and 49) and areexpressed in Km2/W (Fhft2/Btu). The thermal resistance Rfor the average of any (four) randomly selected specimens shallnot be more than 5 % below the listed R value when tested inaccordance with Section 15. R values other
23、 than those listedshall be as agreed upon between the supplier and the purchaser.6. Workmanship, Finish, and Appearance6.1 The product shall be free of extraneous foreign materialssuch as metals and glass that will adversely affect the perfor-mance in service.TEST METHODS7. Summary7.1 The following
24、tests shall be conducted on loose-fillcellulosic insulation at the measured design density: moisturevapor sorption, smoldering combustion, and thermal resis-tance.NOTE 2The importance of an insulations product to maintain its fireretardant characteristics is recognized. A task group in ASTM C16.31 i
25、scurrently studying methods to ascertain if there is a long-term deteriora-tion of fire performance characteristics of cellulose insulation. Should theneed for a permanency test be determined by this task group and a testmethod be developed and finalized, it will become a part of thisspecification.8
26、. Design Density8.1 ScopeThis test method provides a basis for calculat-ing the product coverage values and for conducting physicalproperty tests requiring the use of design density for samplepreparation.8.2 Significance and UseThe design density is the ap-proximate density expected after long-term
27、attic application.8.3 Apparatus and Materials:8.3.1 Insulation Specimen ContainerA beaker having aflat bottom and an inside diameter of 15.06 1 cm (5.9 6 0.39in.), straight sides. The height of the beaker shall be such thatthe distance between the bottom of the cyclone and the topedge of the beaker
28、is 8.50 6 1.0 cm (3.35 6 0.39 in.).8.3.2 Flat Rigid Disk, having a total weight of 75 6 5g(2.65 6 0.18 oz) and of a suitable diameter to fit loosely intothe specimen container. Weight may be added to the center ofthe disk to bring the total weight to the required 75 6 5g.8.3.3 Balance, having a 2-kg
29、 (4.41-lb) capacity accurateto6 0.2g(60.007 oz).8.3.4 Blower Apparatus, having two blower units (supplyand overflow) meeting the following specifications:8.3.4.1 Each blower apparatus shall be capable of blowingan average of 272.2 kg (600 lb) of insulation per hour.8.3.4.2 Each blower apparatus shal
30、l have a nominal air flowvelocity of 0.38 m/s (75 ft/min).8.3.4.3 Each blower apparatus shall have a nominal motorspeed of 16 450 r/min at 115 V (a-c).8.3.5 Shaker Unit, having a capability of shaking 4.5 kg (10lb) of weight with a vertical motion of 0.5 g rms accelerationat an approximate frequency
31、 of 9 Hz and displacement ofapproximately 1.176 0.08 cm (1532 6132 in.).8.3.6 Fill Chamber, having inside dimensions of 45.7 cm(18 in.) high by 38.1 cm (15 in.) wide by 38.1 cm (15 in.) deep,with covered openings that will allow a radiant panel tray to beslid through the chamber (see Fig. 1).8.3.7 C
32、yclone ReceiverSee Fig. 2.8.3.8 HoseVarious lengths of nominal 5.08-cm (2-in.)diameter hose (see Fig. 1):8.3.8.1 Supply Source Hose, 274.3 6 5.1 cm (108 6 2 in.).8.3.8.2 Cyclone Receiver Hose, 182.9 6 5.1 cm (72 6 2in.).8.3.8.3 Fill Chamber Exit Hose, 91.4 6 5.1 cm (36 6 2 in.).8.3.8.4 Overflow Exha
33、ust Hose, length as needed.8.3.9 Blower Controls, having capability of operating thetwo blowers at 40 V rms and 12 A.8.3.10 Insulation Holding Container, capable of holdingfour times the amount of insulation required to fill thespecimen container.8.3.11 Garden Rake, with steel teeth.8.4 Conditioning
34、:C 739 05be128.4.1 Condition specimens to equilibrium at 21 6 2.0C(69.8 6 3.6F) and 50 6 5 % relative humidity in an open topmesh bottom container not exceeding 10.16 cm (4 in.) in depthand position in such a way to allow free movement of air onexposed sides. A change in net weight of the specimen t
35、hat isless than 1 % in two consecutive weighings with 24 h betweeneach weighing constitutes equilibrium.8.4.2 If ambient laboratory conditions are different from theconditioning requirements specified in 8.4.1, begin testing thespecimen for design density within 10 min after it has beenremoved from
36、the conditioned area.8.5 Procedure for Pneumatic Applications:8.5.1 Conduct the test in an area conditioned in accordancewith 8.4.1.8.5.2 Blow the material through a commercial blower using30.48 m (100 ft.) of 5.08 cm (2 in.) hose into a sample receiverwhile holding the hose horizontally at a height
37、 of four feet.8.5.3 Set up the apparatus as shown in Fig. 1. Connect oneend of the supply source hose to the intake of the supplyblower. Use the other end of the supply source hose to pick upinsulation from the holding container. Connect one end of thecyclone receiver hose to the outlet of the suppl
38、y blower and theother end to the fill chamber. Place the fill chamber on a flatand level surface. Connect one end of the variable lengthoverflow exhaust hose to the outlet of the overflow blower.Conveniently place the other end to reduce insulation dust inthe test area.8.5.4 Weigh the empty insulati
39、on specimen container andrecord its weight.8.5.5 Place the empty insulation specimen container in thefill chamber, centered under the cyclone receiver, and close thefront cover.8.5.6 Adjust the blower control(s) so that the supply andoverflow blowers will operate at a no-load voltage of 40 V rms.8.5
40、.7 Simultaneously turn on the blowers and proceed to fillthe insulation specimen container by picking up material fromthe holding container using the supply source hose.8.5.8 The container may fill unevenly, that is, a void maytend to form off center in the container. If this occurs, stop theFIG. 1
41、Partial Insulation Preparation ApparatusFIG. 2 Cyclone Receiver WeldmentC 739 05be13blowing process and rotate the container. If, for any reason, thefilling process is interrupted for more than 1 min or for morethan the time allowed to rotate the container once, begin theprocess again.8.5.9 Gently r
42、emove the excess material using a straightedge to leave a uniform surface on the insulation flush with thetop of the container.8.5.10 Weigh the filled and leveled container and record theweight. Take care not to bump or jar the container so not tointroduce any extraneous settling of the insulation.8
43、.5.11 Cover the container to prevent spilling and secure thecontainer to the shaker. Operate the shaker for a period of 5min 6 15 s.8.5.12 Remove the container from the shaker and uncover,taking care not to bump or jar it. Lower the disk very slowlyinto the container until it starts to contact the i
44、nsulation.At thispoint, release the disk and allow it to settle onto the insulationunder its own weight.8.5.13 Measure the volume of the space occupied by theinsulation using the bottom edge of the disk as the upper datumpoint. If the disk is not level, measure the high and low pointsof the bottom o
45、f the disk and average the readings and use thisas the height measurement in calculating the volume (Vs).Calculate the design density using the insulation volume andinsulation mass (W).8.5.14 Repeat 8.5.1-8.5.13 using another specimen of theinsulation until four densities are obtained for a given ma
46、terial.Then average these figures to determine the design density.8.6 Procedure for Pouring Applications:8.6.1 Pour loose-fill insulation into a simulated attic spaceuntil full. The attic space shall be formed by two nominal 2 by6 by 8-ft long joists placed 40.6 cm (16 in.) on center with1.27-cm (12
47、-in.) plywood nailed to the ends and bottom. Fluffthe material with a garden rake, applying a series of smallamplitude strokes while moving the rake slowly along the joist.Repeat the fluffing process six times.8.6.2 Weigh the empty insulation specimen container andrecord its mass.8.6.3 Using a shove
48、l, remove the insulation from the simu-lated attic space and place it into the specimen container untilthe container just begins to overflow.8.6.4 Follow the procedure specified in 8.5.9-8.5.13.8.6.5 Repeat 8.6.2-8.6.4 using another specimen of theinsulation until four densities are obtained for a g
49、iven material.Then average these values to determine the design density.8.7 Procedure for Pouring and Pneumatic ApplicationsIfthe insulation is intended for both pouring and pneumaticapplications, or if it is uncertain whether the insulation will bepoured or installed pneumatically, test the insulation for designdensity in accordance with 8.4, 8.5, and 8.6 for each of theapplications.8.8 CalculationsCalculate the design density, in kg/m3(lb/ft3), of each specimen using Eq 1:Design density 5 W/Vs(1)where:W = combined mass of the container and
