1、Designation: C739 11C739 17Standard 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
2、. 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 U.S. Department of Defense.1. Scope1.1 This specification covers the composition and
3、 physical requirements of chemically treated, recycled cellulosic fiber loose-filltype thermal insulation for use in attics or enclosed spaces in housing, and other framed buildings within the ambient temperaturerange from 45from 45 to 90C by pneumatic or pouring application.While products that comp
4、ly with this specification are usedin various constructions, they are adaptable primarily, but not exclusively, to wood joist, rafters, and stud construction.1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.3 This standar
5、d does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.1.4 This international standard w
6、as developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced
7、 Documents2.1 ASTM Standards:2B152/B152M Specification for Copper Sheet, Strip, Plate, and Rolled BarC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of theGuarded-Hot-Plate ApparatusC518 Test Method
8、for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter ApparatusC687 Practice for Determination of Thermal Resistance of Loose-Fill Building InsulationC1114 Test Method for Steady-State Thermal Transmission Properties by Means of the Thin-Heater ApparatusC1338 Test Method f
9、or Determining Fungi Resistance of Insulation Materials and FacingsC1363 Test Method for Thermal Performance of Building Materials and EnvelopeAssemblies by Means of a Hot BoxApparatusC1374 Test Method for Determination of Installed Thickness of Pneumatically Applied Loose-Fill Building InsulationC1
10、485 Test Method for Critical Radiant Flux of Exposed Attic Floor Insulation Using an Electric Radiant Heat Energy SourceE177 Practice for Use of the Terms Precision and Bias in ASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test MethodE970 Test
11、 Method for Critical Radiant Flux of Exposed Attic Floor Insulation Using a Radiant Heat Energy Source3. Terminology3.1 DefinitionsFor definitions of terms used in this specification, see Terminology C168.3.2 Definitions of Terms Specific to This Standard:3.2.1 attican enclosed space between the roo
12、f and ceiling of the occupied part of a building.3.2.2 critical radiant fluxthe level of incident radiant heat energy on the attic floor insulation system at the most distantflame-out point (W/cm2).1 This specification is under the jurisdiction ofASTM Committee C16 on Thermal Insulation and is the d
13、irect responsibility of Subcommittee C16.23 on Blanket and LooseFill Insulation.Current edition approved April 1, 2011June 1, 2017. Published May 2011August 2017. Originally approved 1973. Last previous edition approved 20082011 asC739 08.C739 11. DOI: 10.1520/C0739-11.10.1520/C0739-17.2 For referen
14、cedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the
15、user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard
16、 as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Materials and Manufacture4.1 The basic material shall be recycled cellulosic fiber made from selected paper, paperboard
17、 stock, or ground wood stock,excluding contaminated materials, which may reasonably be expected to be retained in the finished product. Suitable chemicalsare introduced to provide properties such as flame resistance, processing, and handling characteristics.4.2 The basic material may be processed in
18、to a form suitable for installation by pneumatic or pouring methods.5. Physical and Chemical Properties5.1 Design DensityThe design density shall be determined in accordance with Section 8. Report all units in kg/m3.5.1.1 Design density is not a basis for acceptance or rejection.5.2 CorrosivenessThe
19、 loose-fill insulation material shall be tested for corrosiveness as specified in Section 9. The compositionof the insulation material shall be such that after testing, no perforation of the 3-mil (76-m) metal specimens shall be evident whenthe specimens are observed over a 40-W appliance light bulb
20、. Notches extending into the coupon 3 mm or less from any edge shallbe ignored.5.3 Critical Radiant FluxWhen tested in accordance with Section 10, the critical radiant flux shall be equal to greater than 0.12 W/cm2. All values shall be reported to two significant digits.5.4 Fungi ResistanceThe loose
21、-fill insulation material shall be tested and shall pass fungi resistance as specified in Section11. If the growth on two or more of the replicate test items is greater than that on the comparative item, the test item shall beconsidered to fail.NOTE 1If the manufacturing claims the insulation kills
22、or controls insects or rodents, or both, the product must be registered as a pesticide under theFederal 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 insulation shall be no
23、more than 15 % by weight when tested in accordancewith Section 12.5.6 Odor EmissionAny sample producing a detectable odor that is classified as objectionable and strong or very strong bymore than two panel members shall be considered to have failed the test when tested in accordance with Section 13.
24、5.7 Smoldering CombustionWhen tested in accordance with the smoldering combustion test method in Section 14, theinsulation shall show no evidence of flaming and a weight loss no greater than 15 %.5.8 Thermal ResistanceThe standard thermal resistance values normally recommended for open application a
25、re: 2.3, 3.4., 3.9,5.3, 6.7, and 8.6 and are expressed in Km2/W. The thermal resistance R for the average of any (four) randomly selected specimensshall not be more than 5 % below the listed R value when tested in accordance with Section 15. R values other than those listedshall be as agreed upon be
26、tween the supplier and the purchaser.6. Workmanship, Finish, and Appearance6.1 The product shall be free of extraneous foreign materials such as metals and glass that will adversely affect the performancein service.TEST METHODS7. Summary7.1 The following tests shall be conducted on loose-fill cellul
27、osic insulation at the measured design density: moisture vaporsorption, smoldering combustion, and thermal resistance.NOTE 2The importance of an insulations product to maintain its fire retardant characteristics is recognized.Atask group inASTM C16.31 is currentlystudying methods to ascertain if the
28、re is a long-term deterioration of fire performance characteristics of cellulose insulation. Should the need for apermanency test be determined by this task group and a test method be developed and finalized, it will become a part of this specification.8. Design Density8.1 ScopeThis test method prov
29、ides a basis for calculating the product coverage values and for conducting physical propertytests requiring the use of design density for sample preparation.8.2 Significance and UseThe design density is the approximate density expected after long-term attic application.8.3 Apparatus and Materials:8
30、.3.1 Insulation Specimen ContainerAbeaker having a flat bottom and an inside diameter of 15.061 cm, straight sides. Theheight of the beaker shall be such that the distance between the bottom of the cyclone and the top edge of the beaker is 8.50 61.0 cm.8.3.2 Flat Rigid Disk, having a total weight of
31、 75 6 5 g and of a suitable diameter to fit loosely into the specimen container.Weight may be added to the center of the disk to bring the total weight to the required 75 6 5 g.C739 1728.3.3 Balance, having a 2-kg capacity accurate to 60.2 g.8.3.4 Blower Apparatus, having two blower units (supply an
32、d overflow) meeting the following specifications:8.3.4.1 Each blower apparatus shall be capable of blowing an average of 272.2 kg of insulation per hour.8.3.4.2 Each blower apparatus shall have a nominal air flow velocity of 0.38 m/s.8.3.4.3 Each blower apparatus shall have a nominal motor speed of
33、16 450 r/min at 115 V (a-c).8.3.5 Shaker Unit, having a capability of shaking 4.5 kg of weight with a vertical motion of 0.5 g rms acceleration at anapproximate frequency of 9 Hz and displacement of approximately 1.17 6 0.08 cm.8.3.6 Fill Chamber, having inside dimensions of 45.7 cm high by 38.1 cm
34、wide by 38.1 cm deep, with covered openings thatwill allow a radiant panel tray to be slid through the chamber (see Fig. 1).8.3.7 Cyclone ReceiverSee Fig. 2.8.3.8 HoseVarious lengths of nominal 5.08-cm diameter hose (see Fig. 1):8.3.8.1 Supply Source Hose, 274.3 6 5.1 cm.8.3.8.2 Cyclone Receiver Hos
35、e, 182.9 6 5.1 cm.8.3.8.3 Fill Chamber Exit Hose, 91.4 6 5.1 cm.8.3.8.4 Overflow Exhaust Hose, length as needed.8.3.9 Blower Controls, having capability of operating the two blowers at 40 V rms and 12 A.8.3.10 Insulation Holding Container, capable of holding four times the amount of insulation requi
36、red to fill the specimencontainer.8.3.11 Garden Rake, with steel teeth.8.4 Conditioning:8.4.1 Condition specimens to equilibrium at 21 6 2.0C and 50 6 5 % relative humidity in an open top mesh bottom containernot exceeding 10.16 cm in depth and position in such a way to allow free movement of air on
37、 exposed sides.Achange in net weightof the specimen that is less than 1 % in two consecutive weighings with 24 h between each weighing constitutes equilibrium.8.4.2 If ambient laboratory conditions are different from the conditioning requirements specified in 8.4.1, begin testing thespecimen for des
38、ign density within 10 min after it has been removed from the conditioned area.8.5 Procedure for Pneumatic Applications:8.5.1 Conduct the test in an area conditioned in accordance with 8.4.1.8.5.2 Blow the material through a commercial blower using 30.48 m of 5.08 cm hose into a sample receiver while
39、 holding thehose horizontally at a height of four feet.8.5.3 Set up the apparatus as shown in Fig. 1. Connect one end of the supply source hose to the intake of the supply blower.Use the other end of the supply source hose to pick up insulation from the holding container. Connect one end of the cycl
40、onereceiver hose to the outlet of the supply blower and the other end to the fill chamber. Place the fill chamber on a flat and levelsurface. Connect one end of the variable length overflow exhaust hose to the outlet of the overflow blower. Conveniently placethe other end to reduce insulation dust i
41、n the test area.8.5.4 Weigh the empty insulation specimen container and record its weight.FIG. 1 Partial Insulation Preparation ApparatusC739 1738.5.5 Place the empty insulation specimen container in the fill chamber, centered under the cyclone receiver, and close the frontcover.8.5.6 Adjust the blo
42、wer control(s) so that the supply and overflow blowers will operate at a no-load voltage of 40 V rms.8.5.7 Simultaneously turn on the blowers and proceed to fill the insulation specimen container by picking up material from theholding container using the supply source hose.8.5.8 The container may fi
43、ll unevenly, that is, a void may tend to form off center in the container. If this occurs, stop the blowingprocess and rotate the container. If, for any reason, the filling process is interrupted for more than 1 min or for more than the timeallowed to rotate the container once, begin the process aga
44、in.8.5.9 Gently remove the excess material using a straight edge to leave a uniform surface on the insulation flush with the topof the container.8.5.10 Weigh the filled and leveled container and record the weight. Take care not to bump or jar the container so not tointroduce any extraneous settling
45、of the insulation.8.5.11 Cover the container to prevent spilling and secure the container to the shaker. Operate the shaker for a period of 5 min6 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 slowly intothe container until it st
46、arts to contact the insulation. At this point, release the disk and allow it to settle onto the insulation underits own weight.8.5.13 Measure the volume of the space occupied by the insulation using the bottom edge of the disk as the upper datum point.If the disk is not level, measure the high and l
47、ow points of the bottom of the disk and average the readings and use this as the heightmeasurement in calculating the volume (Vs). Calculate the design density using the insulation volume and insulation mass (W).8.5.14 Repeat 8.5.1 8.5.13 using another specimen of the insulation until four densities
48、 are obtained for a given material. Thenaverage these figures to determine the design density.8.6 Procedure for Pouring Applications:8.6.1 Pour loose-fill insulation into a simulated attic space until full. The attic space shall be formed by two nominal 2 by 6 by8-ft long joists placed 40.6 cm on ce
49、nter with 1.27-cm plywood nailed to the ends and bottom. Fluff the material with a gardenrake, applying a series of small amplitude strokes while moving the rake slowly along the joist. Repeat the fluffing process sixtimes.FIG. 2 Cyclone Receiver WeldmentC739 1748.6.2 Weigh the empty insulation specimen container and record its mass.8.6.3 Using a shovel, remove the insulation from the simulated attic space and place it into the specimen container until thecontainer just begins to overflow.8.6.4 Follow the procedure specified in 8.5.9 8.5.13.8.6
