1、Designation: D2178/D2178M 14Standard Specification forAsphalt Glass Felt Used in Roofing and Waterproofing1This standard is issued under the fixed designation D2178/D2178M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, the year o
2、f last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This specification covers glas
3、s felts impregnated tovarying degrees with asphalt intended to be used with asphaltsconforming to the requirements of Specifications D312 orD7654 in the construction of built-up roofs, and with asphaltsconforming to the requirements of Specification D449 in theconstruction of waterproofing systems.1
4、.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith t
5、he standard.1.3 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.
6、Referenced Documents2.1 ASTM Standards:2D146 Test Methods for Sampling and Testing Bitumen-Saturated Felts and Woven Fabrics for Roofing andWaterproofingD312 Specification for Asphalt Used in RoofingD449 Specification for Asphalt Used in Dampproofing andWaterproofingD1079 Terminology Relating to Roo
7、fing and WaterproofingD7654 Specification for Asphalt Used in Roofing Measuredby Dynamic Shear Rheometer3. Terminology3.1 Definitions:3.1.1 For definitions of terms used in this specification, referto Terminology D1079.3.2 Definitions of Terms Specific to This Standard:3.2.1 net dry massthe mass of
8、the asphalt-impregnatedglass felt exclusive of wrapping and packing material, afterdrying to constant weight and after removing all detachedcomminuted surfacing material as described in 8.2.4. Classification4.1 Asphalt-impregnated glass felts Types IV and VI arecovered by this specification.5. Mater
9、ials and Manufacture5.1 The felt shall be a thin, porous sheet of uniformlydistributed glass fibers, with or without the addition of rein-forcing stranded glass yarns, and bonded with a water-resistantresinous binder.5.2 In the process of manufacture, the felt shall be impreg-nated with asphalt whic
10、h shall be permitted to contain amineral stabilizer so that the individual glass fibers are coatedand the asphalt is evenly distributed throughout.5.3 The impregnated glass felt shall be surfaced with amaterial to prevent sticking in the roll. The nature and quantityof the surfacing material shall n
11、ot interfere with adhesionbetween the plies of a membrane.6. Physical Properties, Dimensions, Masses, andPermissible Variations6.1 The finished product shall conform to the physicalproperties, dimensions, masses, and permissible variations asprescribed in Table 1 and Table 2.TABLE 1 Physical Propert
12、ies of Asphalt Glass FeltType IV Type VIBreaking strength,Amin, kN/m lbf in.:Longitudinal (with the fiber grain) 7.7 44 10.5 60Transverse (across the fiber grain) 7.7 44 10.5 60Pliability, 13-mm 12-in. radius bend no failures no failuresATo prevent the asphalt-impregnated glass felt from slipping fr
13、om between thejaws of the tension testing machine, insert a thin strip of soft gasket rubberbetween the felt and each of the four jaw faces of the machine.1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee
14、D08.04on Felts, Fabrics and Bituminous Sheet Materials.Current edition approved Nov. 1, 2014. Published November 2014. Originallyapproved in 1963. Last previous edition approved in 2013 as D2178/D2178M 13a.DOI: 10.1520/D2178_D2178M-14.2For referenced ASTM standards, visit the ASTM website, www.astm.
15、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 States1TABLE 2 Dime
16、nsions and Masses of Asphalt Glass FeltAType IV Type VIWidth of roll, mm in., or as agreed between purchaser and supplier 914 36 0.7 % 914 36 0.7 %Area of roll, min, m2ft2, or as agreed between purchaser and supplier 50.17 540 50.17 540Net dry mass of asphalt-impregnated glass felt, min, g/m2lb 100
17、ft2Average of all rollsNonmineral parting agent 303 6.2 303 6.2Mineral parting agent 342 7.0 342 7.0Individual rolls 293 6.0 293 6.0Moisture at point of manufacture, %, maxA1.0 1.0Mass of desaturated glass felt, min, g/m2lb 100 ft2 83 1.7 93 1.9Bituminous saturant (asphalt), min, g/m2lb 100 ft2 146
18、3.0 146 3.0Ash, % 70 to 88 70 to 88Parting agent and stabilizer, max, g/m2lb 100 ft2 156 3.2 146 3.0AAt time of manufacture. Products with higher moisture content at time of installation may cause hot materials to foam, creating interply voids that may result in blisters.6.2 The finished product sha
19、ll not crack nor be so sticky asto cause tearing or other damage upon being unrolled attemperatures between 10 and 60C 50 and 140F.6.3 After extraction of the asphalt in accordance withSection 16 of Test Methods D146, the desaturated felt shallremain flat and unbuckled, shall retain its original sha
20、pe anddimensions, and individual fibers shall remain firmly set inplace.6.4 The pliability specimen shall be conditioned in air at 256 1C 77 6 2F, 50 6 5 % relative humidity, for at least 1h and tested in a room maintained at the same temperature(immersion in water not required). Otherwise, follow T
21、estMethods D146, the paragraph on felts in the Pliability section.7. Workmanship, Finish, and Appearance7.1 The finished material shall be uniformly impregnatedwith asphalt of uniform thickness, and shall be free of visibledefects such as ragged or untrue edges, breaks, cracks, tears,and protuberanc
22、es.7.2 Type IV shall contain closely spaced pinholes not over0.8 mm 132 in. in diameter over the entire area of the felt.Individual holes up to 6.4 mm 14 in. in diameter shall bepermitted, provided that no more than five such holes are foundin any 1.0 m21.2 yd2 of felt.7.3 Type VI shall be permitted
23、 to contain closely spacedholes over the entire area of the felt up to 3 mm 18 in. indiameter.7.4 The finished material shall be furnished with layinglines, which shall be clearly visible during application of theroof, and spaced at appropriate distances apart to provide forapplication of built-up r
24、oofs with the appropriate number ofplies.8. Sampling and Test Methods8.1 Sample the material and determine the properties enu-merated in this specification in accordance with Test MethodsD146, except for the net dry mass of asphalt-impregnated glassfelt.8.2 Net Dry Mass of Asphalt-Impregnated Glass
25、FeltCut arepresentative sample from the full width of each sample roll asdescribed in Section 10 of Test Methods D146. Suspend thesamples vertically and allow them to dry to constant weight.Remove the detached comminuted surfacing as described inSection 11 of Test Methods D146. Then weigh each sampl
26、e offelt and calculate the individual and average net dry mass perunit area.8.3 AshDetermine ash by ignition at 538 6 14C 1000 625F for not less than 10 min.9. Inspection9.1 InspectionInspection shall be in accordance with therequirements of this specification.9.2 Inspection AlternativesAlternative
27、inspection require-ments shall be detemined by and as agreed upon between thepurchaser and the supplier.10. Rejection and Resubmittal10.1 Failure to ConformFailure to conform to any of therequirements as stated in this specification constitutes groundsfor rejection.10.2 Rejection RedressThe supplier
28、 shall have the right toinspect the rejected materials. The supplier and the purchasershall agree to the quantity of rolls deemed unacceptable. Thesupplier shall then have the right to submit the same number ofnew rolls as replacement.11. Packaging and Package Marking11.1 Unless otherwise agreed upo
29、n between the supplier andpurchaser, each product package shall be plainly marked withthe suppliers name, product brand, ASTM designation, andtype of bitumen if not evident in the label name of the product.11.2 The rolls shall be securely wrapped or banded in amanner that completely encircles the ro
30、ll and will preventslipping or unrolling.11.3 No roll shall contain more than two pieces, and nomore than 3 % of the rolls in any lot shall contain two pieces.If a roll contains a manufacturing splice, the splice shall beclearly marked.12. Keywords12.1 asphalt; built-up roofs; glass felt; waterproof
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