ASTM_C_1134_-_90_2012e1.pdf

Designation:C113490(2012)1Standard Test Method forWater Retention of Rigid Thermal Insulations FollowingPartial Immersion1This standard is issued under the fixed designation C1134;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.1NOTESection 8.5 was editorially revised in January 2013.1.Scope1.1 This test method determines the amount of water re-tained(including surface water)by rigid block and boardthermal insulations used in building construction applicationsafter these materials have been partially immersed in liquidwater for prescribed time intervals under isothermal condi-tions.This test method is intended to be used for the charac-terization of materials in the laboratory.It is not intended tosimulate any particular environmental condition that may beencountered in building construction applications.1.2 This test method does not address all the possiblemechanisms of water intake and retention and related phenom-ena for rigid thermal insulations.It relates only to thoseconditions outlined in 1.1.Determination of moisture accumu-lation in thermal insulations due to complete immersion,watervapor transmission,internal condensation,freeze-thaw cycling,or a combination of these effects requires different test proce-dures.1.3 Each partial immersion interval is followed by a brieffree-drainage period.This test method does not address orattempt to quantify the drainage characteristics of materials.Therefore,results for materials with different internal structureand porosity,such as cellular materials and fibrous materials,may not be directly comparable.Also,test results for speci-mens of different thickness may not be directly comparablebecause of porosity effects.The surface characteristics of amaterial also affect drainage.Specimens with rough surfacesmay retain more surface water than specimens with smoothsurfaces,and surface treatment during specimen preparationmay affect water intake and retention.Therefore,results formaterials with different surface characteristics may not bedirectly comparable.1.4 For most materials the size of the test specimens is smallcompared with the size of the products actually installed in thefield.If the surface-to-volume ratios for the test specimens andthe corresponding products are different,the test results may bemisleading.1.5 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.1.6 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:C168 Terminology Relating to Thermal Insulation2E691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 DefinitionsTerminology C168 applies to terms used inthis test method.3.2 Descriptions of Terms Specific to This Standard:3.2.1 WRSshort-term water retention rating,the average ofthe water retained following the 0.75-h and 3.00-h partialimmersion intervals,kilograms per square metre(percent byvolume)(for materials tested at 1.00 in.(25.4 mm)thickness).(See 4.2.)3.2.2 WRLlong-term water retention rating,the waterretained following the 168-h partial immersion interval,kilo-grams per square metre(percent by volume)(for materialstested at 1.00 in.(25.4 mm)thickness).(See 4.2.)4.Significance and Use4.1 Materials less than or equal to 0.59 in.(15.0 mm)inthickness shall not be tested in accordance with this test1This 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 Dec.1,2012.Published January 2013.Originallyapproved in 1990.Last previous edition approved in 2007 as C113490(2007)1.DOI:10.1520/C1134-90R12E01.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 method in order to avoid complete immersion of the speci-mens.This type of exposure is beyond the scope of this testmethod.4.2 Materials shall be tested at both actual product thicknessand 1.00 in.(25.4 mm)thickness provided the materials can becut to a thickness of 1.00 in.(25.4 mm)without changing theoriginal character of the materials.If a product can