ASTM_C_240_-_16.pdf

Designation:C24016Standard Test Methods ofTesting Cellular Glass Insulation Block1This standard is issued under the fixed designation C240;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.1.Scope1.1 These test methods cover the testing of cellular glassinsulation block for density,water absorption,compressivestrength,flexural strength at ambient temperature;preparationfor chemical analysis;and thermal conductivity measurements.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 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 limitations 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 ApparatusC203 Test Methods for Breaking Load and Flexural Proper-ties of Block-Type Thermal InsulationC303 Test Method for Dimensions and Density of Pre-formed Block and BoardType Thermal InsulationC390 Practice for Sampling and Acceptance of ThermalInsulation LotsC518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC871 Test Methods for Chemical Analysis of Thermal Insu-lation Materials for Leachable Chloride,Fluoride,Silicate,and Sodium IonsD226/D226M Specification for Asphalt-Saturated OrganicFelt Used in Roofing and WaterproofingD4869/D4869M Specification for Asphalt-Saturated Or-ganic Felt Underlayment Used in Steep Slope Roofing2.2 ISO Standard:ISO 3951 Sampling Procedure and Charts for Inspection byVariables for Percent Nonconforming32.3 Military Standard:MIL-I-24244 Specification Insulation Materials with SpecialCorrosion,Chloride,and Fluoride Requirements42.4 Other Standard:NRC 1.36 Nonmetallic Thermal Insulation for AusteniticStainless Steel53.Terminology3.1 DefinitionsTerminology C168 shall be considered asapplying to the terms considered in these test methods.4.Significance and Use4.1 From a general standpoint,these test methods outlinethe particular points which have to be taken into account whenapplying ASTM standard test methods to the case of cellularglass insulating block.5.Test Methods5.1 General Sample PreparationAll tests have to be runon dry specimens.In case of need,the sample must beunpacked and stored in a dry place in such a way that allsurfaces are exposed to the ambient air for a minimum of 24hours before testing.5.2 DensityDetermine the density in accordance with TestMethod C303.Preferably,the density shall be measured on afull block,18 by 24 in.(450 by 600 mm)by full thickness.5.2.1 It shall be noted that density is interesting as such forcalculation of insulated equipment load and because it hasinfluence on the other important properties of cellular glass.1These test methods are under the jurisdiction of ASTM Committee C16 onThermal Insulation and are the direct responsibility of Subcommittee C16.32 onMechanical Properties.Current edition approved Sept.1,2016.Published September 2016.Originallyapproved in 1950.Last previous edition approved in 2012 as C240 08(2012).DOI:10.1520/C0240-16.2For 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.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4Available from DLA Document Services,Building 4/D,700 Robbins Ave.,Philadelphia,PA 19111-5094,http:/quicksearch.dla.mil.5Available from Director of Regulatory Standards,US Atomic EnergyCommission,Washington,DC 20545.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 But it shall not be considered in itself as a criterion foracceptance in the case of cellular glass.5.3 Water Absorption:5.3.1 ScopeThis test method covers the determination ofwater absorption of cellular glass insulating blocks by measur-ing the amount of water retained as a result of completeimmersion for a prescribed time interval.Surface blotting isused to correct for the water absorbed on the cut surface cells.5.3.2 Significance and UseThis test method provides ameans of measuring the water absorption of cellular glassinsulating blocks u