1、Designation: C 1616 07e1Standard Test Method forDetermining the Moisture Content of Organic and InorganicInsulation Materials by Weight1This standard is issued under the fixed designation C 1616; the number immediately following the designation indicates the year oforiginal adoption or, in the case
2、of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.e1NOTE8.3 was editorially corrected in November 2007.1. Scope1.1 This test method will determine the moi
3、sture content, asa percentage of the dry weight of organic and inorganicinsulation materials.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns, i
4、f 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:2C 168 Terminology Relating to Thermal Insulati
5、onC 302 Test Method for Density and Dimensions of Pre-formed Pipe-Covering-Type Thermal InsulationC 303 Test Method for Dimensions and Density of Pre-formed Block and BoardType Thermal InsulationC 390 Practice for Sampling and Acceptance of ThermalInsulation Lots3. Terminology3.1 DefinitionsFor defi
6、nitions used in this specification,see Terminology C 168.3.2 Symbols:M = moisture content weight, percentWI= initial specimen weight, lb (g)WMF= moisture-free specimen weight (g) M,lb4. Summary of Test Method4.1 This test method is based upon weighing specimens ofthe insulation material and then dry
7、ing the specimens byheating them in an oven to remove any moisture. Then themoisture content is determined using the calculation procedurein 9.1.5. Significance and Use5.1 Some insulation materials contain moisture, which willaffect the thermal and other physical properties of the insula-tion.6. App
8、aratus6.1 Air-circulating Oven.6.2 Scale (accurate to within 0.0011 lb (0.5 g).7. Sampling and Test Specimen Preparation7.1 Test SpecimenThe test specimen shall be of a size thatcan be conveniently tested in a drying oven but not less than 72cubic inches in volume such as 6 by 6 by 2 in. thick (150
9、by150 by 51 mm).8. Procedure8.1 Four test specimens shall be tested. Cut or prepare thefour specimens to meet the size requirements of 7.1.8.2 Measure and record the specimens weight (WI) imme-diately after the specimens are prepared to size. The specimensshall be weighed to the nearest 0.0011 lb (0
10、.5 g).8.3 Place the specimens in an air-circulating oven at atemperature specified in the material specification or at atemperature no higher than 230 6 10F (110 6 6C) for aminimum of 2 h. Cool the specimens to room temperature in adesiccator and measure their weight. Repeat the process untilsuccess
11、ive weights agree to within 0.2 % of the specimenweight obtained in the latest weighing. Record these weights asmoisture free weight (WMF).NOTE 1When testing an insulation that contains multiple ingredientsand one or more ingredients will dehydrate between the material specifi-cation upper temperatu
12、re limit or above, the oven temperature can be1This 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 1, 2007. Published June 2007. Originallyapproved
13、 in 2005. Last previous edition approved in 2005 as C 161605.2For 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.
14、1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.lowered. The oven temperature will be adjusted based on the chemical thedehydrates at the lowest temperature.9. Calculation9.1 Calculate the moisture content as follows:M 5 100FWI2 WMF!
15、WMFG(1)9.2 The value reported shall be the numerical average of thecalculated moisture content of the four specimens rounded tothe nearest 0.1 percent.10. Report10.1 Report the following information:10.1.1 Complete sample identification including tradename, manufacturer, lot number and date of produ
16、ction, whenknown,10.1.2 Date and time of test initiation,10.1.3 Date and time of all weight determinations alongwith the weights,10.1.4 Actual temperature used to dry the sample,10.1.5 Time to reach steady dry weight, and10.1.6 Report the results of all the specimens tested for eachsample and the nu
17、merical average calculated in 9.2.11. Precision and Bias11.1 Precision and bias have not yet been determined but arebeing investigated. A precision and bias statement will beincluded when the proper data have been obtained and ana-lyzed.12. Keywords12.1 inorganic insulation; insulation; moisture con
18、tent; or-ganic insulation; water; weightASTM International takes no position respecting 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
19、 riskof infringement of such rights, are entirely their own responsibility.This standard 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
20、 this standard or for additional standardsand should be addressed to ASTM International 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 shouldm
21、ake your views known to the ASTM Committee on Standards, at the address shown below.This 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).C161607e12
