1、Designation: C 659 90 (Reapproved 2008)Standard Specification forAsbestos-Cement Organic-Foam Core Insulating Panels1This standard is issued under the fixed designation C 659; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea
2、r 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers asbest
3、os-cement plastic-foamcore panels consisting of a core of insulating cellular plasticsandwiched between and bonded to two sheets of asbestos-cement facing board. Asbestos-cement plastic-foam core pan-els are normally nonload-bearing panels designed for exteriorand interior walls, partitions, curtain
4、 walls, and other insulationand decorative purposes.1.2 All measurements and tests necessary for determiningthe conformity of asbestos-cement plastic-foam core panelswith this specification are made in accordance with the testmethods covered in Sections 6 and 10.1.3 The values stated in SI units are
5、 to be regarded as thestandard. The values stated in parentheses are provided forinformation only.1.4 WarningBreathing of asbestos dust is hazardous.Asbestos and asbestos products present demonstrated healthrisks for users and for those with whom they come into contact.In addition to other precautio
6、ns, when working with asbestos-cement products, minimize the dust that results. For informa-tion on the safe use of chrysoltile asbestos, refer to “Safe Useof Chrysotile Asbestos: A Manual on Preventive and ControlMeasures.”21.5 This standard does not purport to address all of thesafety concerns, if
7、 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. See 1.4 for aspecific hazard warning.2. Referenced Documents2.1 ASTM Standards:3C 220 Spe
8、cification for Flat Asbestos-Cement SheetsC 236 Test Method for Steady-State Thermal Performanceof Building Assemblies by Means of a Guarded Hot Box4C 355 Discontinued 1983; Test Methods for Water VaporTransmission of Thick Materials; Replaced by E 964D 2341 Specification for Rigid Urethane Foam4E 9
9、6/E 96M Test Methods for Water Vapor Transmission ofMaterials2.2 Federal Standard:Fed. Std. No. 123 Marking for Shipment (Civil Agencies)52.3 Military Standard:MIL-STD-129 Marking for Shipment and Storage53. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 flexural strength, nthe
10、average breaking load innewtons (or lbf) of specimens conditioned seven days at 23 62C and 50 6 10 % relative humidity, loaded as simple beanswith the load applied equally and simultaneously at bothone-third points of the span.3.1.2 thermal resistance, Rof a panel, the difference intemperature which
11、 will develop under a given steady state heatflow between two parallel unit area surfaces for a givenmaterial thickness.4. Materials and Manufacture4.1 Asbestos-cement plastic-foam core sandwich panelsshall be composed of a plastic-foam core sandwiched betweenand bonded to two asbestos-cement facing
12、 sheets. The sheetsmay be supplied with a factory-applied finish, a factory primecoat, or uncoated. In order to provide a balanced panel andprevent field warpage, the two asbestos-cement facings shouldhave essentially equal vapor transmission rates.5. Physical Properties5.1 FacingsAsbestos-cement fa
13、cing sheets shall conformto the requirements for Type F of Specification C 220 for3.2-mm (18-in.) thickness.5.2 CoreThe plastic-foam core as well as pertinent gradeor type classification shall be as agreed upon by the purchaser1This specification is under the jurisdiction of ASTM Committee C17 onFib
14、er-Reinforced Cement Products and is the direct responsibility of C17.03 onAsbestos - Cement Sheet Products and Accessories.Current edition approved May 1, 2008. Published July 2008. Originally approvedin 1970. Last previous edition approved in 2003 as C 659 90(2003)1.2Available from The Asbestos In
15、stitute, http:/ 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.4Withdrawn.5Available from Standardization Documen
16、ts, Order Desk, Bldg. 4, Section D,700 Robbins Ave., Philadelphia, PA 19111-5094. Attn: NPODS.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.and seller. If Urethane is used, it shall conform to therequirements of Specification D 234
17、1.5.3 Strength PropertiesThe average breaking load forpanel specimens conditioned for seven days at 23 6 2C (70 to77F) and 50 6 10 % relative humidity shall not be less thanthat shown in Table 1.5.4 Vapor PermeabilityThe vapor permeance of the com-posite panel is dependent not only on the foam core,
18、 but on theadhesive, facing sheets, and the coating on such facings. Thevapor permeabilities shown in Table 2 are typical values for thecore materials and are not restrictive values for the compositepanel.5.5 Thermal Resistance, RThe average thermal resis-tance, R, = 5 Fft = 2h/Btu (Km = 2/W) = 6 of
19、 the panel shallnot be less than the requirements in Table 3.5.6 Adhesive Line BondThe bond of the glue line shallwithstand weather exposure and have such quality that speci-mens in the flexural strength test fail within the core board andnot at any of the glue lines.6. Dimensional Measurements6.1 S
20、ignificanceThese are routine measurements for thepurpose of determining whether the length and width of theindividual units are as ordered, to ensure that they fit togetherproperly in application, and to determine the uniformity of thespecified thickness.6.2 ProcedureMeasure each test specimen for t
21、hickness,using a micrometer caliper having flat anvils approximately 6.4mm (14 in.) in diameter and reading to 0.0254 mm (0.001 in.).Make four measurements on each specimen at the approximatemidpoint of each edge of the specimen, and at least 12.7 mm(12 in.) in from the edge. Average the four measur
22、ements, andrecord as the specimen thickness.7. Dimensions, Mass, and Permissible Variations7.1 Asbestos-cement plastic-foam core panels are normallysupplied in the commercial dimensions given in Table 4.However, because of the frequent use of other thicknesses, thescope of this specification is not
23、limited to only the morecommon thicknesses.7.2 Permissible Variation in Dimensions:7.2.1 ThicknessThe permissible variation of any indi-vidual panel from the nominal thickness shall be 61.2 mm (364in.).7.2.2 Width and LengthThe permissible variation of anyindividual panel from the nominal length and
24、 width shall be63.2 mm (18 in.) and 61.6 mm (116 in.), respectively, asmeasured after 48 h at 23 6 2C (70 to 77F) and 50 6 5%relative humidity.7.2.3 SquarenessThe deviation from squareness shall notexceed 1.3 mm/m (164 in./ft) of width or length. The recom-mended tools for measuring squareness are a
25、 feeler gage andmetal carpenter square.8. Workmanship, Finish, and Appearance8.1 WorkmanshipPanels shall have a commercially ac-ceptable surface on both sides and be free of major defects thatwill impair appearance, erection, use, or serviceability.8.2 FinishThe surface on both sides of the panel ma
26、y besmooth, grained, granuled, coated, or otherwise textured asspecified by the purchaser.8.3 ColorBoth surfaces of the panel will be the naturalcolor of the asbestos-cement product or may be colored by theaddition of mineral pigments, chemical impregnation, pig-mented coatings, veneers, or embedded
27、 mineral granules asspecified by the purchaser.9. Sampling9.1 Select at random a number of panels from each ship-ment or fraction thereof representing a product of the samekind. The following table shows the number of panels to beselected from shipments of various sizes:Number of Panels Number ofin
28、Shipment Samples500 and under 3501 to 1000 51001 to 1728 61729 to 2744 72745 to 4096 84097 to 5832 95833 to 8000 1010. Test Methods10.1 Flexural Strength:10.1.1 ProcedureCut two specimens 305 by 760 mm (12by 30 in.), from each panel to be tested, with the longdimension of the samples parallel to the
29、 long dimension of thepanel. Condition each specimen for seven days at 23 6 2C (70to 77F) and 50 6 10 % relative humidity. Determine theflexural strength of each specimen by placing the specimen onsupports that do not exert longitudinal constraint (rocker-typeTABLE 1 Flexural Strength Requirements F
30、or PanelsWith Third-Point LoadingNominal Thickness Minimum Flexural Loadmm (in.) N (lbf)25 (1) 1330 (300)40 (1916) 1870 (420)40 (2) 2270 (510)TABLE 2 Vapor PermeabilityPermeability of Coreperm-in. (kg/Pasm)PolystyreneUrethane5.0 (7.3 3 1012)2.0 (2.9 3 1012)TABLE 3 Thermal Resistance, RNominalThickne
31、ss, in.R value at 75F, (24C), meanTemperature, min. Fft2h/Btu(Km2/W)Panel Core Polystyrene Urethane134 2.70 (0.48) 4.35 (0.76)1916 1516 4.76 (0.84) 7.69 (1.35)2134 6.25 (1.10) 10.0 (1.75)TABLE 4 Standard SizesLength, ft (m) 6, 8, 9, 10, 12 (1.83, 2.44, 2.74, 3.05, 3.66)Width, ft (m) 4 (1.22)Thicknes
32、s, in. (mm) 1, 1916 , 2 (25, 40, 51)C 659 90 (2008)2bearing edges or rollers witha3mm(18 in.) minimum and a13 mm (12 in.) maximum radius) and applying the load equallyand simultaneously at both one-third points of the span throughsimilar edges bearing against either surface of the specimen.The test
33、span shall be 610 6 1.6 mm (24 6116 in.) and the loadline and supports shall be parallel. Increase the load applied ata uniform rate to produce a failure of the specimen in 1 to 2min. The error in the load reading shall not exceed 1 % of themaximum load. Report the flexural strength as the averagebr
34、eaking load, in newtons (or pounds-force), for all thespecimens tested.10.1.2 Warningsee 1.4.10.2 Vapor Permeability:10.2.1 SignificanceThe purpose of this test method is toobtain, by means of simple apparatus, reliable values inuniform units of measurement for the rate of water-vaportransmission of
35、 insulating and related materials. These valuesare for use in design, manufacture, and marketing. Correlationof test values with any given use must be determined byexperience.10.2.2 ProcedureTest asbestos-cement plastic-foam coreinsulating panels in accordance with the Desiccant Methodgiven in Test
36、Methods C 355.10.3 Thermal Resistance, R:10.3.1 ProcedureTest asbestos-cement plastic-foam coreinsulating panels in accordance with Test Method C 236.Thermal resistance is calculated as the reciprocal of thermalconductance.11. Inspection and Certification11.1 Inspection and certification of the mate
37、rial shall be asagreed upon by the purchaser and seller as part of the purchasecontract.12. Packaging and Package Marking12.1 Commercial QuantitiesThe commercial unit formarketing flat panels is the square foot. Table 4 lists sizesgenerally available commercially.12.2 Commercial PackagingAsbestos-ce
38、ment plastic-foam core panels shall be so shipped as to ensure acceptance bycommon carrier. There is no standard package. The material isusually shipped in bulk, but may be crated when so specifiedby the purchaser.12.3 StorageAsbestos-cement plastic-foam core panelsshould be piled on sufficiently fi
39、rm supports that will keep thepanels level and flat. The panels shall be piled with the edgessquare and flush, and covered to provide protection from theweather until used.SUPPLEMENTARY REQUIREMENTSThe following supplementary requirements shall apply when material is supplied under thisspecification
40、 for U.S. Government procurement.S1. PackagingS1.1 Unless otherwise specified in the contract, the materialshall be packaged in accordance with the producers standardpractice which will be acceptable to the carrier at lowest rates.Containers and packing shall comply with Uniform FreightClassificatio
41、n Rules6or National Motor Freight ClassificationRules.7Marking for shipment of such material shall be inaccordance with Fed. Std. No. 123 forcivil agencies andMIL-STD-129 for military agencies.S2. Responsibility for InspectionS2.1 Unless otherwise specified in the contract or purchaseorder, the prod
42、ucer is responsible for the testing of all materialto assure compliance with the requirements specified herein.Except as otherwise specified in the contract or order, theproducer may use his own or any other suitable facilities for theperformance of the inspection and test requirements specifiedhere
43、in, unless disapproved by the purchaser. The purchasershall have the right to perform any of the inspections and testsset forth in this specification where such inspections aredeemed necessary to assure that material conforms to pre-scribed requirements.ASTM International takes no position respectin
44、g 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 their own responsibility.This standa
45、rd 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 addressed to ASTM Internationa
46、l 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, at the address shown below.Th
47、is 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).6Available from The Uniform Classification Commission, Room 1106, 222 S.Riverside Plaza, Chicago, IL 60606.7Available from National Motor Freight Inc., 1616 P. St., N.W., Washington, DC20036.C 659 90 (2008)3
