1、Designation: C 1083 06Standard Test Method forWater Absorption of Cellular Elastomeric Gaskets andSealing Materials1This standard is issued under the fixed designation C 1083; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea
2、r 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.1. Scope1.1 This test method covers those cellular elastomeric com-pounds that are manufactured in preformed shapes such asg
3、askets, and that are used as compression seals for glazingpurposes and as sealing materials in other applications inbuilding construction.1.2 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
4、establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.3 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are provided forinformation purposes only.2. Referenced Documents2.1 ASTM St
5、andards:2C 717 Terminology of Building Seals and SealantsD 3182 Practice for RubberMaterials, Equipment, andProcedures for Mixing Standard Compounds and Prepar-ing Standard Vulcanized Sheets3. Terminology3.1 DefinitionsRefer to Terminology C 717 for the fol-lowing terms used in this test method: cel
6、l, compound,compression gasket, elastomer, elastomeric, gasket, glazing,seal, and sealing material.4. Significance and Use4.1 This test method will quantify the water absorptioncharacteristics of cellular elastomeric gaskets and sealingmaterials. It is a test that enables the specifier to exerciseen
7、gineering judgment in the selection of materials.5. Apparatus5.1 Vessel, of potable water of dimensions appropriate topermit proper submergence of the specimens as described inSection 9.5.2 Stand and Clamps, to hold specimens.5.3 Balance, triple-beam, accurate to 0.01 g.5.4 Paper, lint-free blotting
8、.6. Comparison to Other Standards6.1 The ASTM Committee with jurisdiction over this stan-dard1is not aware of any comparable standards published byother organizations.7. Sampling and Test Specimens7.1 Sampling:7.1.1 When possible, the manufactured product or a suitablesection thereof shall be used f
9、or the test. Representativesamples of the lot being examined shall be selected at random.7.1.2 When the manufactured product does not lend itself totesting or to the taking of test specimens because of compli-cated shape, small size, metal or fabric inserts, or other reasons,standard test strips sha
10、ll be prepared. The standard specimensfor testing shall be as specified in 7.2.2.7.1.3 The manufacturer shall, upon the request of thepurchaser at the time of ordering, furnish sufficient testspecimens prepared in accordance with Practice D 3182.7.2 Test Specimens:7.2.1 The test specimen shall be 46
11、0 mm (18 in.) long.7.2.2 Test specimens that are to be prepared as described by7.1.2 shall be 460 mm (18 in.) long, 13 mm (12 in.) thick, and25 mm (1 in.) wide.1This test method is under the jurisdiction ofASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommit
12、tee C24.73 onCompression Seal and Lock-Strip Gaskets.Current edition approved May 1, 2006. Published May 2006. Originallyapproved in 1987. Last previous edition approved in 2000 as C 1083 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serv
13、iceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.2.3 All test specimens shall be made from the samecom
14、pound and shall have the same apparent density and stateof cure as the product they represent.7.2.4 This test method requires ten test specimens.8. Conditioning8.1 Condition all test specimens at 21.1 6 1.1C (70 6 2F)for at least 24 h prior to testing.9. Procedure9.1 Identify each test specimen and
15、individually weigh andrecord the information.9.2 Secure the test specimens in a vertical position usingstands and clamps. Clamp at both ends of each specimen sothat the specimens are bent in a U-shape.9.3 Submerge only the center 406 mm (16 in.) of the testspecimens with the bottom of the loop 152 m
16、m (6 in.) belowthe water line, and the cut ends of the specimen out of thewater.9.4 Test specimens shall be submerged in potable water at23.9 6 1.1C (75 6 2F) for a period of 24 h.9.5 Remove the test specimens from the water and blot withlint-free paper before weighing. The blotting should be donewi
17、th as little pressure as possible so that only the surface wateris removed from the specimen.9.6 Weigh each test specimen and record the values.10. Report10.1 Report the following information:10.1.1 Identification of each test specimen.10.1.2 Average weight of test specimens before testing.10.1.3 Av
18、erage weight of test specimens after testing.10.1.4 Average weight of water absorbed by the test speci-mens.10.1.5 Variation, if any, from the specified test procedure.11. Precision and Bias311.1 The precision and bias calculations for this test methodare based on the results of four laboratories te
19、sting sixmaterials.11.2 The between-laboratory accuracy of this test method inthe determination of water absorption (based on an averageover four laboratories) is 0.78 for the six test materialsevaluated. This means that if the absolute value of thedifference between two values is greater than 0.78,
20、 then 95 %of the time this represents a statistical difference.11.3 Limited information is available on the precision ofthis test method. Only one sample of each material has beentested in four laboratories using this test method. Past experi-ence has shown that the within-laboratory precision of th
21、is testmethod is expected to be less than the between-laboratoryaccuracy.12. Keywords12.1 absorption; cellular; elastomeric; gaskets; glazing;sealing materials; waterASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin thi
22、s standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the 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
23、 reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresp
24、onsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake 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, We
25、st 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).3Supporting data are available from ASTM Headquarters. Request RR:C24 1083.C1083062
