1、Designation: E1745 11Standard Specification forPlastic Water Vapor Retarders Used in Contact with Soil orGranular Fill under Concrete Slabs1This standard is issued under the fixed designation E1745; the number immediately following the designation indicates the year oforiginal adoption or, in the ca
2、se 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 This specification covers flexible, preformed sheetmembrane materials to be used as vapor
3、retarders in contactwith soil or granular fill under concrete slabs.1.1.1 This specification does not cover bituminous vaporretarders. See Specification E1993 for information on bitumi-nous vapor retarders.1.2 The specified tests are conducted on new materials andmaterials that have been conditioned
4、 or exposed to simulatepotential service conditions.1.3 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.2. Referenced Documents2.1 ASTM S
5、tandards:2C168 Terminology Relating to Thermal InsulationD828 Test Method for Tensile Properties of Paper andPaperboard Using Constant-Rate-of-Elongation Appara-tus3D882 Test Method for Tensile Properties of Thin PlasticSheetingD1709 Test Methods for Impact Resistance of Plastic Filmby the Free-Fall
6、ing Dart MethodE96/E96M Test Methods for Water Vapor Transmission ofMaterialsE154 Test Methods for Water Vapor Retarders Used inContact with Earth Under Concrete Slabs, on Walls, or asGround CoverE631 Terminology of Building ConstructionsE1643 Practice for Selection, Design, Installation, and In-spe
7、ction of Water Vapor Retarders Used in Contact withEarth or Granular Fill Under Concrete SlabsE1993 Specification for Bituminous Water Vapor RetardersUsed in Contact with Soil or Granular Fill Under ConcreteSlabsF1249 Test Method for Water Vapor Transmission RateThrough Plastic Film and Sheeting Usi
8、ng a ModulatedInfrared Sensor3. Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication, see Terminologies C168 and E631.3.2 Definitions of Terms Specific to This Standard:3.2.1 perm, nthe time rate of water vapor migrationthrough a material or a construction of one grain per
9、hour,square foot, inch of mercury pressure difference.3.2.1.1 DiscussionIf a specification states that a one permlimit is required, the same flow rate will be obtained from thefollowing relationships:1 perm = 1 grain/h ft2in. Hg (inchpound)= 57.2 10;12kg/(Pasm2) (SI fundamental units)= 57.2 ng/(Pa s
10、 m2) (SI frequently used)= 0.66g/24hm2 mm Hg (SI has been used but is now obso-lete)3.2.2 vapor retarder, n(formerly vapor barrier) a materialor construction that impedes the transmission of water vaporunder specified conditions.3.2.3 water vapor permeability, na property of materialwhich is water v
11、apor permeance through unit thickness. Sincematerials that provide resistance to vapor flow are never usedin unit thickness, the preferred evaluation of both materials andconstructions is the permeance.3.2.4 water-vapor permeance, nthe time rate of watervapor flow through unit area of the known thic
12、kness of a flatmaterial or a construction normal to two specific parallel1This specification is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.21on Serviceability.Current edition approved Oct. 1, 2011. Published October 20
13、11. Originallyapproved in 1996. Last previous edition approved in 2009 as E1745 09. DOI:10.1520/E1745-11.2For 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 standar
14、ds Document Summary page onthe ASTM website.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.surfaces induced by unit vapor pressure differ
15、ence between thetwo surfaces under specific temperature and humidity condi-tions. See perm.4. Classification4.1 Materials shall be specified to conform to one of thesethree classes: A, B, or C, or specific requirements shall bespecified in one or more of the properties listed in Table 1.5. Specifyin
16、g Information5.1 Specifications for materials shall include the following:5.1.1 This specification number.5.1.2 ClassA, B, or C, or alternatively, specific performancerequirements for each of the properties listed in Table 1.5.1.3 Performance requirements, if any, for special condi-tions (see 7.3).6
17、. Lap Sealing6.1 The producer shall provide instructions for lap sealing,including minimum width of lap, method of sealing, and eithersupply or specify suitable products for lap sealing.7. Properties7.1 PermeanceMaterial shall conform to the requirementslisted in Table 1 under the following conditio
18、ns: when tested inaccordance with Test Methods E154, Section 7 (based on TestMethods E96/E96M), or Test Method F1249, test temperatureshall be 73.4F (23C) and test humidity shall be 50 6 2%.7.1.1 Permeance of New MaterialNo conditioning.7.1.2 Permeance after Wetting, Drying, and SoakingRefer to Test
19、 Methods E154, Section 8.7.1.3 Permeance after Heat ConditioningRefer to TestMethods E154, Section 11.7.1.4 Permeance after Low Temperature ConditioningRefer to Test Methods E154, Section 12.7.1.5 Permeance after Soil Organism ExposureRefer toTest Methods E154, Section 13.7.2 Tensile Strength of New
20、 MaterialRefer to Test Meth-ods E154, Section 9. (The apparatus shall be that described ineither Test Methods D828 or D882.)7.3 Resistance to Puncture of New MaterialRefer to TestMethods D1709, Test Method B.7.4 Special ConditionsWhen specifically required by thebuyer, due to special conditions whic
21、h dictate properties of fireresistivity, prolonged exposure to sunlight, or resistance todeterioration from hydrocarbons, the material shall conform tothe following:7.4.1 Flame Spread4Refer to Test Methods E154, Section16, as follows:Class A 025Class B 2675Class C 762007.4.2 Permeance after Soil Poi
22、son Petroleum VehicleExposureRefer to Test Methods E154, Section 14 (based onTest Methods E96/E96M), or Test Method F1249. Conform topermeance requirements in Table 1.7.4.3 Permeance after Exposure to Ultraviolet LightReferto Test Methods E154, Section 15. Conform to permeancerequirements in Table 1
23、.8. Sampling8.1 For each complete set of tests, obtain all samples froma single production roll of material. Samples shall be represen-tative of the material being sold to the end user.9. Certification9.1 When specified in the purchase order or contract, thepurchaser shall be furnished with certific
24、ation that samplesrepresenting each lot have been either tested or inspected asdirected in this specification and that requirements have beenmet.9.2 Upon the request of the purchaser in the contract ororder, the certification of an independent third party (testinglaboratory) indicating conformance t
25、o the requirements of thisspecification may be considered.9.3 When specified in the purchase order or contract, theproducer or supplier shall furnish a summary of the testprocedures listed in Table 1, providing for each test thelaboratory that performed or witnessed the test, the date of themost rec
26、ent test, and the test results.4The classes and values shown are distinct from the performance classes listedin Table 1.TABLE 1 Properties for Specified Performance ClassesAClass A Class B Class CIP Units SI Units IP Units SI Units IP Units SI UnitsWater vaporpermeance0.1 perms 0.1 perms 0.1 perms(T
27、est MethodsE154, Section 7,or Test MethodF1249), max(0.1 gr/hft2in.Hg) (6 ng/sm2Pa) (0.1 gr/hft2inHg) (6 ng/sm2Pa) (0.1 gr/hft2in.Hg) (6 ng/sm2Pa)Tensile strength (TestMethods E154,Section 9),Bmin45.0 lbf/in. 7.9 kN/m 30.0 lbf/in. 5.3 kN/m 13.6 lbf/in. 2.4 kN/mPuncture resistance(Test MethodsD1709,
28、TestMethod B), minno inch-poundequivalent used2200 g no inch-poundequivalent used1700 g no inch-poundequivalent used475 gARefer to Practice E1643 for assessing suitability of use based on reported perm rating of material.BTensile strength per unit width for the total sample thickness is used instead
29、 of tensile strength per unit area because vapor retarder materials are never used in unitthickness.E1745 1129.4 When specified in the purchase order or contract, theproducer or supplier shall furnish copies of the laboratoryreports for each of the tests listed in Table 1.10. Keywords10.1 concrete;
30、concrete slab; floor; plastic; vapor retarderASTM 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, an
31、d 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 reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revisi
32、on of 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 sh
33、ouldmake 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).E1745 113
