1、Designation:C65990(Reapproved 2014)Standard Specification forAsbestos-Cement Organic-Foam Core Insulating Panels1This standard is issued under the fixed designation C659;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of las
2、t revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers asbestos-cement plastic-foamcore panels consisting of a core of insulating cellular plasticsandwiche
3、d 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 walls,and other insulationand decorative purposes.1.2 All measurements and tests necessary for d
4、eterminingthe 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 to be regarded as thestandard.The values stated in parentheses are provided forinformation only.1
5、.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 precautions,when working with asbestos-cement products,minimize the dust that results.For informa-tion on th
6、e 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 any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priat
7、e safety and health practices and determine the applica-bility of regulatory limitations prior to use.See for a specifichazard warning.2.Referenced Documents2.1 ASTM Standards:3C220 Specification for Flat Asbestos-Cement SheetsC236 Test Method for Steady-State Thermal Performance ofBuilding Assembli
8、es by Means of a Guarded Hot Box(Withdrawn 2001)4C355 Test Methods for Water Vapor Transmission of ThickMaterials;Replaced by E 96(Withdrawn 1982)4D2341 Specification for Rigid Urethane Foam(Withdrawn1988)4E96/E96M Test Methods for Water Vapor Transmission ofMaterials2.2 Federal Standard:Fed.Std.No.
9、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 average breaking load innewtons(or lbf)of specimens conditioned seven days at 23 62C and 50 6 10%re
10、lative 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 will develop under a given steady state heatflow between two parallel unit area surfaces for a givenmater
11、ial thickness.4.Materials and Manufacture4.1 Asbestos-cement plastic-foam core sandwich panelsshall be composed of a plastic-foam core sandwiched between1This specification is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct responsibility of C17.03 o
12、nAsbestos-Cement Sheet Products and Accessories.Current edition approved Dec.1,2014.Published December 2014.Originallyapproved in 1970.Last previous edition approved in 2008 as C659 90(2008).DOI:10.1520/C0659-90R14.2Available from The Asbestos Institute,http:/ referenced ASTM standards,visit the AST
13、M 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.4The last approved version of this historical standard is referenced onwww.astm.org.5Available from Standardiz
14、ation Documents,Order Desk,Bldg.4,Section D,700 Robbins Ave.,Philadelphia,PA 19111-5094.Attn:NPODS.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 and bonded to two asbestos-cement facing sheets.The sheetsmay be supplied with a factory-ap
15、plied 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 facing sheets shall conformto the requirements for Type F o
16、f Specification C220 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 purchaserand seller.If Urethane is used,it shall conform to therequirements of Specification D2341.5.3 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-p
