1、Designation: E 1745 09Standard Specification forPlastic Water Vapor Retarders Used in Contact with Soil orGranular Fill under Concrete Slabs1This standard is issued under the fixed designation E 1745; the number immediately following the designation indicates the year oforiginal adoption or, in the
2、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.1. Scope1.1 This specification covers flexible, preformed sheetmembrane materials to be used as vapo
3、r retarders in contactwith soil or granular fill under concrete slabs.1.1.1 This specification does not cover bituminous vaporretarders. See Specification E 1993 for information on bitumi-nous vapor retarders.1.2 The specified tests are conducted on new materials andmaterials that have been conditio
4、ned 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 AST
5、M Standards:2C 168 Terminology Relating to Thermal InsulationD 828 Test Method for Tensile Properties of Paper andPaperboard Using Constant-Rate-of-Elongation ApparatusD 882 Test Method for Tensile Properties of Thin PlasticSheetingD 1709 Test Methods for Impact Resistance of Plastic Filmby the Free
6、-Falling Dart MethodE 96/E 96M Test Methods for Water Vapor Transmission ofMaterialsE 154 Test Methods for Water Vapor Retarders Used inContact with Earth Under Concrete Slabs, on Walls, or asGround CoverE 631 Terminology of Building ConstructionsE 1643 Practice for Selection, Design, Installation,
7、andInspection of Water Vapor Retarders Used in Contact withEarth or Granular Fill Under Concrete SlabsE 1993 Specification for Bituminous Water Vapor RetardersUsed in Contact with Soil or Granular Fill Under ConcreteSlabsF 1249 Test Method for Water Vapor Transmission RateThrough Plastic Film and Sh
8、eeting Using a ModulatedInfrared Sensor3. Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication, see Terminologies C 168 and E 631.3.2 Definitions of Terms Specific to This Standard:3.2.1 perm, nthe time rate of water vapor migrationthrough a material or a construction of on
9、e grain per 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)= 5
10、7.2 ng/(Pa s 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 materialwhic
11、h is water vapor 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 th
12、e known thickness of a flatmaterial or a construction normal to two specific parallelsurfaces induced by unit vapor pressure difference between thetwo surfaces under specific temperature and humidity condi-tions. See perm.4. Classification4.1 Materials shall be specified to conform to one of theseth
13、ree classes: A, B, or C, or specific requirements shall bespecified in one or more of the properties listed in Table 1.1This specification is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.21on Serviceability.Current editi
14、on approved Feb. 15, 2009. Published February 2009. Originallyapproved in 1996. Last previous edition approved in 2004 as E 1745 97 (04).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume i
15、nformation, 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.5. Specifying Information5.1 Specifications for materials shall include the following:5.1.1 This specificatio
16、n 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. Lap Sealing6.1 The producer shall provide instructions for lap sealing,including minimum width
17、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 conditions: when tested inaccordance with Test Methods E 154, Section 7 (based on TestMethods E 96/E 96M)
18、, or Test Method F 1249, test tempera-ture shall be 73.4F (23C) and test humidity shall be50 6 2%.7.1.1 Permeance of New MaterialNo conditioning.7.1.2 Permeance after Wetting, Drying, and SoakingRefer to Test Methods E 154, Section 8.7.1.3 Permeance after Heat ConditioningRefer to TestMethods E 154,
19、 Section 11.7.1.4 Permeance after Low Temperature ConditioningRefer to Test Methods E 154, Section 12.7.1.5 Permeance after Soil Organism ExposureRefer toTest Methods E 154, Section 13.7.2 Tensile Strength of New MaterialRefer to Test Meth-ods E 154, Section 9. (The apparatus shall be that described
20、 ineither Test Methods D 828 or D 882.)7.3 Resistance to Puncture of New MaterialRefer to TestMethods D 1709, Test Method B.7.4 Special ConditionsWhen specifically required by thebuyer, due to special conditions which dictate properties of fireresistivity, prolonged exposure to sunlight, or resistan
21、ce todeterioration from hydrocarbons, the material shall conform tothe following:7.4.1 Flame Spread3Refer to Test Methods E 154, Sec-tion 16, as follows:Class A 025Class B 2675Class C 762007.4.2 Permeance after Soil Poison Petroleum VehicleExposureRefer to Test Methods E 154, Section 14 (based onTes
22、t Methods E 96/E 96M), or Test Method F 1249. Conformto permeance requirements in Table 1.7.4.3 Permeance after Exposure to Ultraviolet LightReferto Test Methods E 154, Section 15. Conform to permeancerequirements in Table 1.8. Certification8.1 When specified in the purchase order or contract, thepu
23、rchaser shall be furnished with certification that samplesrepresenting each lot have been either tested or inspected asdirected in this specification and that requirements have beenmet.8.2 Upon the request of the purchaser in the contract ororder, the certification of an independent third party (tes
24、tinglaboratory) indicating conformance to the requirements of thisspecification may be considered.8.3 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 wit
25、nessed the test, the date of themost recent test, and the test results.8.4 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 1.9. Keywords9.1 concrete; concrete slab; floor; plastic; vapor ret
26、arder3The 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(Test MethodsE 154, Section
27、7,or Test MethodF 1249), 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 E 154,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 MethodsD 1709, TestMethod B), minno i
28、nch-poundequivalent used2200 g no inch-poundequivalent used1700 g no inch-poundequivalent used475 gARefer to Practice E 1643 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 of tensile strength
29、per unit area because vapor retarder materials are never used in unitthickness.E1745092ASTM 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
30、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 reviewed every five years andif not revised, either reapproved or withdrawn. Y
31、our 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 theresponsible technical committee, which you may attend. If you feel that your commen
32、ts 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, 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).E1745093
