1、Designation: C 1080 98 (Reapproved 2008)Standard Specification forAsbestos-Cement Products Other Than Fill For CoolingTowers1This standard is issued under the fixed designation C 1080; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision
2、, 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 drift eliminators or demisters,louvers, partitioning and casing panels.NOTE 1A
3、sbestos-cement pipes are covered in Specifications C 296and C 428; and asbestos-cement heat exchange fill products are covered inSpecification C 1082 for flat fill and Specification C 1081 for corrugatedfill.1.2 The following classes of products are covered:Paragraph ClassificationsDrift eliminators
4、 or demisters 4.1 Classes 1, 2 and 3Louvers 4.2 Classes 1 and 2Casing panels 4.3 Classes 1 and 2Asbestos-cement pressurepipes4.4 Classes 100, 150, and 200Asbestos-cement nonpressureor gravity drainage pipes4.5 Classes 1500, 2400, 3300,4000, and 50001.2.1 Products cured at atmospheric pressure or by
5、auto-claving are covered.1.3 The values stated in the SI system are to be regarded asthe standard. The inch-pound units in parentheses are providedfor information only.1.4 WarningBreathing of asbestos dust is hazardous.Asbestos and asbestos products present demonstrated healthrisks for users and for
6、 those with whom they come into contact.In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For informa-tion on the safe use of chrysoltile asbestos, refer to “Safe Useof Chrysotile Asbestos: A Manual on Preventive and ControlMeasures.”21.5 T
7、he following safety hazards caveat pertains only to thetest method portion of this specification (Section 5): Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and
8、healthpractices and to determine the applicability of regulatorylimitations prior to use. For a specific safety hazard, see 1.4.2. Referenced Documents2.1 ASTM Standards:3C 150 Specification for Portland CementC 220 Specification for Flat Asbestos-Cement SheetsC 221 Specification for Corrugated Asbe
9、stos-CementSheetsC 223 Specification for Asbestos-Cement SidingC 296 Specification for Asbestos-Cement Pressure PipeC 428 Specification for Asbestos-Cement NonpressureSewer PipeC 458 Test Method for Organic Fiber Content of Asbestos-Cement ProductsC 459 Test Methods for Asbestos-Cement Flat Products
10、C 1081 Specification for Asbestos-Cement Corrugated FillFor Use in Cooling TowersC 1082 Specification for Asbestos-Cement Flat Sheet forCooling Tower FillD 2946 Terminology for Asbestos and AsbestosCementProducts2.2 DIN Standard:DIN 274 Asbestzement-Weilplatten43. Terminology3.1 DefinitionsThe defin
11、itions covered in TerminologyD 2946 are applicable to this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 autoclaved productsthose that have been treated in asaturated steam atmosphere at between 689 and 1517 kPa (100and 220 psi) for at least 8 h, and that contain portland ce
12、mentType I as defined in Specification C 150 together with silica inthe ratio of 3:2 that can react to form calcium silicate reactionproducts.1This specification is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct responsibility of SubcommitteeC17.03
13、on Asbestos - Cement Sheet Products and Accessories.Current edition approved May 1, 2008. Published July 2008. Originally approvedin 1987. Last previous edition approved in 2003 as C 1080 98(2003)1.2Available from The Asbestos Institute, http:/ referenced ASTM standards, visit the ASTM website, www.
14、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.4Available from Deutsches Institut fr Normunge, Beuth Verlag GmbH, Aus-lieferung, Post Fach 1107, D-1000 Berlin 30, Germa
15、ny.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.3 pressed productsinclude those that are pressed singlyor in stacks interlayered with templates, at a minimum pressureof 12 MPa (1740 psi).4. Classifications4.1 Drift Eliminators o
16、r Demisters:4.1.1 ClassAdrift eliminator materials consist of corrugatedpanels that conform to the following requirements:Nominal thickness 6.5 mm (14 in.)Pitch 177 mm (7 in.)Minimum deflection (in accordance withTest Methods C 459)2.2mm(0.1in.)Minimum average bendingMoment calculated as in DIN 274:
17、 1650 Nm/m (370 ft-lbf/ft)Minimum individual specimen bendingMoment 1400 Nm/m (315 ft-lbf/ft)4.1.2 Class B drift eliminator materials consist of corru-gated panels that conform to the following requirements:Nominal thickness 5 mm ( 3/16 in.)Pitch 155 mm (7 in.)Deflection, minimum (in accordancewith
18、Test Methods C 459)3.3 mm (0.13 in.)Minimum average bendingMoment calculated as in DIN 274 1400 Nm/m (315 ft-lbf/ft)Minimum individual specimen bendingMoment 1190 Nm/m (266 ft-lbf/ft)4.1.3 Class C drift eliminator materials consist of flat sheetsor clapboards that conform to Specifications C 220 (Ty
19、pe F), orC 223, in addition to requirements in 4.1.4.4.1.4 Additional Requirements:Minimum thickness 7 mm (0.272 in.)Minimum apparent density 1.5 g/cm3(94 lb/ft3).4.2 Louvers:4.2.1 Class ALouver materials consisting of corrugatedsheets that conform to Specification C 221.4.2.2 Class BLouver material
20、s consisting of flat sheetsthat meet requirements in Specifications C 220 or C 223.4.3 Casing Panels:4.3.1 Class ACasing panels intended for demanding ap-plications. In addition to compliance with Specifications C 220for flat panels or C 221 for corrugated panels, Type I casingpanels must be made fr
21、om Type V cement as defined inSpecification C 150 and must have a minimum apparentdensity of 1.6 g/cm3(100 lb/ft3).4.3.2 Class BCasing panels intended for less demandingservice need only comply with Specification C 220 for flatpanels or Specification C 221 for corrugated panels.4.4 Asbestos-Cement P
22、ressure Pipes:4.4.1 Classes 100, 150, and 200 shall conform with Speci-fication C 296.4.5 Asbestos-Cement Nonpressure or Gravity DrainagePipes:4.5.1 Asbestos-cement nonpressure or gravity drainagepipes, Classes 1500, 2400, 3300, 4000, and 5000 must conformwith Specification C 428.4.6 Cooling Tower F
23、ill:4.6.1 Flat sheet fill (heat transfer panels).4.6.1.1 Classes A, B, and C shall conform with Specifica-tions C 1081 and 1082.4.6.2 Corrugated Sheet Fill (heat transfer panels)ClassAmust conform with Specifications C 1081.4.6.3 Splash BarsSplash bar Types I and II must conformwith Specifications C
24、 1082.5. Test Methods5.1 Apparent DensityThis is determined by dividing themass of a specimen after drying to constant weight at 100 65C (225 6 10F), by the volume of the specimen.5.2 Water AbsorptionIn accordance with Test MethodsC 459.5.3 Flexural Strength and Modulus of RuptureIn accor-dance with
25、 Test Methods C 459.5.4 Freeze-Thaw Resistance:5.4.1 The number of freeze-thaw cycles specified must notcause any apparent deterioration. Check for signs of delami-nation by means of a magnifying glass. Inspect the specimensfor the presence of invisible cracks by spraying isopropylalcohol from a han
26、d spray bottle onto the specimen (hairlinecracks are revealed when the alcohol evaporates from thesurface).5.4.2 Each cycle shall consist of saturating the specimen bysubmerging in water at 30 6 2C (86 6 3F) during 2 6 0.2h followed by rapid drainage and freezing at 20 6 2C (4 63F) during 10 6 0.2 h
27、. The twice-daily cycle then repeatsstarting with the 2 h period of thawing and saturation in waterat 30C.5.5 Harkort Test:5.5.1 The specimen is dried in an oven at 100 6 2C (2126 3F) for 2 6 0.2 h before rapidly immersing it in 10 6 0.1kg (20 6 0.2 lb) of water at 20 6 2C (68 6 3F) for 10 6 0.2min.
28、 Then the specimen is examined for signs of deterioration.Check and inspect as in 5.4.1. If the specimen does not appeardeteriorated, it is returned to the oven for drying during 24 60.2hat1106 2C (230 6 3F) before reimmersing in thesame way.5.5.2 Subsequent drying periods at successively highertemp
29、eratures are each of 23 h 45 min at oven temperaturesspecified as follows:3rd drying 120 6 2C (258 6 3F)4th drying 130 6 2C (266 6 3F)5th drying 140 6 2C (284 6 3F)6th drying 150 6 2C (302 6 3F)7th drying 160 6 2C (320 6 3F)5.5.3 The number of cycles sustained without deteriorationis reported.5.6 Ad
30、ditional details are presented in Specifications C 220,C 221, C 296, C 1081, and C 1082, Test Method C 458 andTest Methods C 459.6. Inspection6.1 Inspection of the material shall be agreed upon betweenthe purchaser and the supplier as part of the purchase contract.7. Rejection and Rehearing7.1 Mater
31、ial that fails to conform to the requirements of thisspecification may be rejected. Rejection shall be reported to theproducer or supplier promptly and in writing. In case ofdissatisfaction with the results of the tests, the producer orsupplier may make claim for a rehearing.C 1080 98 (2008)28. Cert
32、ification8.1 When specified in the purchase order or contract, aproducers or suppliers certification shall be furnished to thepurchaser that the material was manufactured, sampled, testedand inspected in accordance with this specification and hasbeen found to meet the requirements. When specified in
33、 thepurchase order or contract a report of the test results shall befurnished.8.2 Upon request of the purchaser in the contract or order,the certification of an independent third party indicatingconformance to the requirements of this specification may beaccepted instead of the manufacturers certifi
34、cation.9. Product Marking9.1 For all but the lowest classes of products it is necessaryto print on each piece, in alkali resistant ink, the identificationof the class or type which is to be furnished.10. Keywords10.1 asbestos; asbestos-cement; cement cooling tower;non-fillASTM International takes no
35、 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, and the riskof infringement of such rights, are entirely their own respons
36、ibility.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 revision of this standard or for additional standardsand should be addressed t
37、o 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 shouldmake your views known to the ASTM Committee on Standards, at the add
38、ress 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).C 1080 98 (2008)3
