1、Designation:C51608(Reapproved 2013)1Standard Specification forVermiculite Loose Fill Thermal Insulation1This standard is issued under the fixed designation C516;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revisio
2、n.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 U.S.Department of Defense.1NOTE11.1,12.1,12.2.2,and Table 3 were editorially corrected
3、in April 2014.1.Scope1.1 This specification covers the composition and physicalproperties of expanded or exfoliated vermiculite loose fillinsulation.The specification also includes the testing proce-dures by which the acceptability of the material shall bedetermined.These testing procedures deal pri
4、marily withmaterial performance in the temperature range associated withthe thermal envelope of buildings;however,the commerciallyusable temperature range for this insulation is from 119 to850F(84 to 454C).For specialized applications,refer tomanufacturers instructions.1.2 The specification also cov
5、ers the composition and prop-erties of vermiculite that has been surface-treated to producewater repellency for installations.1.3 When the installation or use of thermal insulationmaterials,accessories,and systems may pose safety or healthproblems,the manufacturer shall provide the user with appro-p
6、riate current information regarding any known problemsassociated with the recommended use of the companysproducts,and shall also recommend protective measures to beemployed in their safe utilization.1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parenthes
7、es are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 The following safety hazards caveat pertains only to thetest methods portion,Section 9,of this specification:Thisstandard does not purport to address all of the safety concerns,if any
8、,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.For specific hazard statements,see Section12.2.Referenced Documents2.1 ASTM Standards:2C136 Test M
9、ethod for Sieve Analysis of Fine and CoarseAggregatesC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC390 Practice for Sampling and Acceptance of ThermalInsulation L
10、otsC518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC520 Test Methods for Density of Granular Loose FillInsulationsE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE136 Test Method for Behavior of Materials in a Vertical
11、Tube Furnace at 750C3.Terminology3.1 DefinitionsRefer to Terminology C168 for definitionsrelating to insulation.4.Classification4.1 Vermiculite insulation is classified by type and gradedesignations,as follows:4.1.1 Type IProduct that results from the expanding orexfoliating of natural vermiculite o
12、re by grading and heating tomeet the requirements of this specification.4.1.2 Type IIExpanded vermiculite that has been surface-treated to produce water repellency and limit absorption ofmoisture from both liquid and vapor phase.4.1.3 Grade designations established by range of particlesize distribut
13、ion and bulk density are shown in Table 1 andTable 2.1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.23 onBlanket and Loose Fill Insulation.Current edition approved Sept.1,2013.Published April 2014.Original
14、lyapproved in 1963.Last previous edition approved in 2008 as C516 08.DOI:10.1520/C0516-08R13E01.2For 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 Su
15、mmary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Ordering Information5.1 All purchase orders shall designate both type and gradeof insulation desired.If type designation is omitted,Type I willbe furnished.Th
16、e type and grade classifications in this speci-fication differ from the classifications in earlier issues.Purchas-ers referencing this specification shall include the date of issue.6.Materials and Manufacture6.1 Vermiculite is a micaceous mineral which is mined andprocessed to produce a high-purity concentrate.Theconcentrate,in the form of flakes of varying size and thicknessweighing 55 lb/ft3(880 kg/m3),is expanded in high-temperature furnaces to densities in the range from 3.0 to 8.0lb/ft3(48
