ASTM_C_1512_-_10_2015e1.pdf

Designation:C151210(Reapproved 2015)1Standard Test Method forCharacterizing the Effect of Exposure to EnvironmentalCycling on Thermal Performance of Insulation Products1This standard is issued under the fixed designation C1512;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 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEEditorial changes were made throughout in September 2015.1.Scope1.1 This test method is applicable to preformed or fieldmanufactured thermal insulation products,such as board stockfoams,rigid fibrous and composite materials manufacturedwith or without protective facings.See Note 1 This test methodis not applicable to high temperature,reflective or loose fillinsulation.NOTE1If the product is manufactured with a facer,test product withfacer in place.1.2 This test method involves two stages:preconditioningand environmental cycling.During the first stage,25 mm(1in.)thick specimens are used to separate two environments.Each of these environments has a constant but differenttemperature and humidity level.During the environmentalcycling stage,specimens also divide two environments namelyconstant room temperature/humidity on one side and cyclingtemperature/ambient relative humidity on the other side.1.3 This test method measures the ability of the product tomaintain thermal performance and critical physical attributesafter being subjected to standardized exposure conditions.Acomparison is made between material properties for referencespecimens stored in the laboratory for the test period andspecimens subjected to the two-stage test method.To eliminatethe effect of moisture from the comparison,the materialproperties of the latter test specimens are determined after theyhave been dried to constant weight.The average value deter-mined for each of the two sets of specimens is used forcomparison.1.4 Different properties can be measured to assess the effectof environmental factors on thermal insulation.This testmethod requires that thermal resistance be determined basedupon an average for three specimens measured after complet-ing the test.Secondary elements of this test method includevisual observations such as cracking,delamination or othersurface defects,as well as the change in moisture content aftereach of the two stages of exposure prescribed by the testmethod.1.5 Characterization of the tested material is an essentialelement of this test method.Material properties used forcharacterization will include either compressive resistance ortensile strength values.The compressive resistance or tensilestrength is measured on two sets of specimens,one setconditioned as defined in 1.2 and a set of reference testspecimens taken from the same material batch and stored in thelaboratory for the whole test period.For comparison,anaverage value is determined for each of the two sets ofspecimens.1.6 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.7 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 requirements prior to use.2.Referenced Documents2.1 ASTM Standards:2C165 Test Method for Measuring Compressive Properties ofThermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC303 Test Method for Dimensions and Density of Pre-formed Block and BoardType Thermal InsulationC518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter Apparatus1This test method is under the jurisdiction ofASTM Committee C16 on ThermalInsulation and is the direct responsibility of Subcommittee C16.33 on InsulationFinishes and Moisture.Current edition approved May 15,2015.Published September 2015.Originallyapproved in 2001.Last previous edition approved in 2010 as C151210.DOI:10.1520/C1512-10R15E012For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 C870 Practice for Conditioning of Thermal Insulating Ma-terialsC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteD1621 Test Method for Compressive Properties of RigidCellular PlasticsD1623 Test Method for Tensile and Tensile Adhesion Prop-erties of Rigid Cellular PlasticsE177 Practice for Use of the Terms Precision and Bia