1、Designation: C728 15C728 16Standard Specification forPerlite Thermal Insulation Board1This standard is issued under the fixed designation C728; 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 physical prop
3、erties for perlite thermal insulation board used principally abovestructural roof decks and as a base for built-up, modified, and elastomeric membrane roofing in building construction.1.2 When adopted by an authority having jurisdiction, codes that address fire properties in many applications regula
4、te the useof the thermal insulation materials covered by this specification. Fire properties are controlled by job, project, or otherspecifications where codes or government regulations do not apply.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parenth
5、eses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.4 This standard 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
6、 safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 The following standards, of the issue in effect on the date of material purchase, form a part of this specification to the extentspecified herein:2.2 ASTM Standards:2C165 Tes
7、t Method for Measuring Compressive Properties of Thermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of theGuarded-Hot-Plate ApparatusC203 Test Methods for Breaking Load and Flexural P
8、roperties of Block-Type Thermal InsulationC209 Test Methods for Cellulosic Fiber Insulating BoardC390 Practice for Sampling and Acceptance of Thermal Insulation LotsC518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter ApparatusC1289 Specification for Face
9、d Rigid Cellular Polyisocyanurate Thermal Insulation BoardE84 Test Method for Surface Burning Characteristics of Building MaterialsC1763 Test Method for Water Absorption by Immersion of Thermal Insulation Materials3. Terminology3.1 For complete descriptions of terms used in this specification, refer
10、 to Terminology C168.4. Classification4.1 Perlite thermal insulation board is classified as follows:4.1.1 Type 1, Roof Insulation BoardA perlite based roof insulation cover board.1 This specification is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibili
11、ty of Subcommittee C16.22 on Organic andNonhomogeneous Inorganic Thermal Insulations.Current edition approved March 1, 2015March 1, 2016. Published June 2015April 2016. Originally approved in 1972. Last previous edition approved in 20132015 asC728C728 15.13. DOI: 10.1520/C0728-15.10.1520/C0728-16.2
12、For referencedASTM 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 p
13、rovide the 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 t
14、he standard 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 States14.1.2 Type 2, Roof Cover or Recover BoardThis is used primarily as a field-applied cover board over other roof
15、insulationsor in reroofing applications. The product is also available to manufacturers of laminated rigid foam products as specified inSpecification C1289, Type III.4.1.3 Type 3, Roof Cover or Recover BoardA perlite based cover board that is field applied over other roof insulations or inre-roofing
16、 and recover applications. The product is also available to manufacturers of laminated rigid foam products as specifiedin Specification C1289, Type III.5. Ordering Information5.1 Orders shall at least include the following information:5.1.1 Title and designation Specification C728.5.1.2 Product name
17、, nominal thickness and dimensions.5.1.3 Quantity of material ordered.5.1.4 Manufacturers name, address, and telephone number.6. Materials and Manufacture6.1 CompositionThe basic material of the insulation board shall be perlite expanded by the application of heat to form glassy,cellular aggregates.
18、 The insulation and cover board shall be composed of expanded perlite and fibers formed into rigid, flat,rectangular units with a suitable sizing material incorporated in the product. A facing or coating is potentially present on one orboth surfaces to prevent excessive hot bitumen strike-in or adhe
19、sive absorption during roofing installation.6.2 LaminationThe finished board is either single-ply or multiple-ply. When multiple-ply boards are supplied, a suitableadhesive shall be used to join the plies.7. Physical Properties7.1 Thermal ResistancePerlite thermal insulation boards and cover shall c
20、onform to the following thermal resistances:Nominal Thicknessin. (mm)Thermal Resistance,Fhft2/btu (Km2/W)Type 1 Type 2 Type 312 (13) 1.4 (0.25) 1.3 (0.23) 1.2 (0.22)34 (19) 2.0 (0.35) . .1 (25) 2.7 (0.48) . .112 (38) 4.1 (0.72) . .2 (51) 5.4 (0.95) . .212 (64) 6.5 (1.1) . .3 (76) 8.1 (1.4) . .7.1.1
21、Nominal thickness is the thickness of insulation required to obtain the desired resistance value. It is possible that thenominal thickness will fall outside the thicknesses shown in 7.1. See 8.1 for tolerances.7.1.2 It is acceptable for insulation and cover boards having thermal resistances other th
22、an those values listed to be suppliedas agreed upon by purchaser and seller.7.2 The insulation and cover board shall further conform to the physical requirements shown in Table 1.8. Standard Dimensions and Tolerances8.1 The dimensions and tolerances shall conform to those listed below. it is accepta
23、ble for other dimensions to be supplied asagreed upon by purchaser and seller.TABLE 1 Physical RequirementsProperty Units Type 1 Type 2 Type 3Density lb/ft3 (kg/m3) 8 (128) min 10 (160) min 12 (192) minCompressive strength at5 % consolidationpsi (kPa) 20(138) min 20 (138) min 50 (345) minTensile str
24、ength,perpendicularlbf/ft2 (kPa) 575 (27.5) min 800 (38.3) min 1800 (86) minBreak Load Strength lbf (kgf) 6.5 (2.9) min 4.5 (2.0) min 8 (3.6) minFlexural strength psi (kPa) 40 (276) min 60 (414) min 180 (1241) minFlexural strengthA psi (kPa) 1 in. 50 (345) min 35 (241) min 65 (448) min$ 1 in. 10 (69
25、) min 5 (34) min 15 (103) minWater absorption volume % 1.5 max 3.5 max 3.5 maxA Minimum flexural strength requirement is based on the calculated value from the minimum required break load strength and the maximum current available thicknessesincluding the thickness tolerance in 8.1. Reference Test M
26、ethods C203 for appropriate calculations.C728 162Dimensions, in. (mm) Tolerance, in. (mm)Length, 36 (915), 48 (1220) 72 (1830), 96 (2440) + 14 (6)18 (3)Width, 24 (610), 48 (1220) + 14 (6)18 (3)Thickness, 12 to 3, (13 to 76), incl 116 (1.6)8.1.1 Board squareness shall be within required tolerance if
27、the two diagonal measurements of the board differ by no more than14 in. (6 mm).8.2 The fabrication of tapered perlite roof insulation board products shall be acceptable if dimension and installationspecifications are agreed upon between buyer and seller.9. Workmanship, Finish, and Appearance9.1 The
28、surface of the board shall be clean, dry, and free of visual defects that will adversely affect the service quality. Edgesshall be square.10. Sampling10.1 Unless otherwise specified, sampling for qualification and inspection tests, if required, shall be in accordance with PracticeC390.11. Test Metho
29、ds11.1 Thermal ResistanceTest Method C177 or C518 at a mean temperature of 75 6 2F (24 6 1C) and a minimumtemperature difference of 40F (22C). In the event of challenge, Test Method C177 shall be the referee method.11.2 Compressive StrengthTest Method C165, Procedure A, at a crosshead speed of 0.05
30、in./min for all thicknesses.11.3 Tensile Strength Perpendicular to the SurfaceSection 12 on Tensile Strength Perpendicular to Surface of Test MethodsC209.11.4 Flexural Strength and Break LoadTest Methods C203, Method I, Procedure D, except test at a strain rate of 2 in./minusing 3 in. (76 mm) wide s
31、pecimens on a 10 in. (254 mm) span.11.5 Flame Spread ClassificationTest Method E84 in the event that surface burning characteristics are required.11.6 Water AbsorptionTest Methods C1763, Procedure B.11.7 ThicknessThickness section of Test Methods C209.11.8 Oven-Dry DensityMoisture Content and Densit
32、y section of Test Methods C209.12. Qualification and Inspection12.1 Qualification tests shall be run on the physical requirements given in 7.1 and 7.2.12.2 Inspection requirements are given in 8.1.13. Rejection13.1 Failure to conform to any of the requirements of this specification shall constitute
33、grounds for rejection. In case ofrejection, the seller shall have the right to reinspect the rejected shipment and resubmit the lot after removal of that portion notconforming to the specified requirements.14. Packaging and Package Marking14.1 PackagingUnless otherwise specified, boards shall be pac
34、kaged in the manufacturers standard commercial containers.Special packaging shall be provided when agreed to in writing between purchaser and seller.14.2 MarkingUnless otherwise specified, each container shall be plainly marked with the suppliers name, address, telephonenumber, board dimensions, qua
35、ntity, and the coverage area per container. Additional marking shall be provided when agreed to inwriting between purchaser and seller.15. Keywords15.1 cover/recover board; laminated rigid foam board; perlite; perlite thermal insulation board; roof insulation; thermalinsulationC728 163ASTM Internati
36、onal takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely thei
37、r own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be
38、 addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards
39、, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); 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:/ 164
