1、Designation: C 1080 98 (Reapproved 2003)e1Standard 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 revisi
2、on, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.e1NOTEAsbestos warning statement was added to 1.4 in September 2004.1. Scope1.1 This specification covers drift e
3、liminators or demisters,louvers, partitioning and casing panels.NOTE 1Asbestos-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 cla
4、sses of products are covered:Paragraph ClassificationsDrift eliminators 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,
5、 3300,4000, and 50001.2.1 Products cured at atmospheric pressure or by 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 a
6、nd asbestos products present demonstrated healthrisks for users and for 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
7、Chrysotile Asbestos: A Manual on Preventive and ControlMeasures.”21.5 The 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 responsi
8、bility of the userof this standard to establish appropriate safety and 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
9、 for Flat Asbestos-Cement SheetsC 221 Specification for Corrugated Asbestos-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 Asbes
10、tos-Cement ProductsC 459 Test Methods for Asbestos-Cement Flat Products.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 Asbestos-CementProducts2.2 DIN Standar
11、d:DIN 274 Asbestzement-Weilplatten43. Terminology3.1 DefinitionsThe definitions 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
12、 1517 kPa (100and 220 psi) for at least 8 h, and that contain portland cementType 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-Cement Pr
13、oducts and is the direct responsibility of Subcommittee C17.03 onAsbestos-Cement Sheet Products and Accessories.Current edition approved Jan. 10, 2003. Published July 2003. Originallyapproved in 1987. Last previous edition approved in 1998 as C 1080 98.2Available from The Asbestos Institute, http:/
14、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.4Available from Deutsches Institut fr Normunge, Beuth Verlag GmbH,
15、 Aus-lieferung, Post Fach 1107, D-1000 Berlin 30, Germany.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 M
16、Pa (1740 psi).4. Classifications4.1 Drift Eliminators or Demisters:4.1.1 Class A drift 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)2.2 mm (0.1
17、 in.)Minimum average bendingMoment calculated as in DIN 274: 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.
18、)Pitch 155 mm (7 in.)Deflection, minimum (in accordancewith 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
19、sheetsor clapboards that conform to Specifications C 220 (Type 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
20、 conform to Specification C 221.4.2.2 Class BLouver materials 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 22
21、1 for corrugated panels, Type I casingpanels must be made from 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 Spe
22、cification C 221 for corrugated panels.4.4 Asbestos-Cement Pressure 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 5
23、000 must conformwith Specification C 428.4.6 Cooling Tower Fill: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)Class Amust conform with Specifications C 1081.4.6.3 Splash Ba
24、rsSplash bar Types I and II must conformwith Specifications C 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.
25、3 Flexural Strength and Modulus of RuptureIn accor-dance with 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 presenc
26、e of invisible cracks by spraying isopropylalcohol from a hand 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 rap
27、id drainage and freezing at 20 6 2C (4 63F) during 10 6 0.2 h. 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
28、 (20 6 0.2 lb) of water at 20 6 2C (68 6 3F) for 10 6 0.2min. 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 w
29、ay.5.5.2 Subsequent drying periods at successively highertemperatures 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 numbe
30、r of cycles sustained without deteriorationis reported.5.6 Additional 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
31、 of the purchase contract.7. Rejection and Rehearing7.1 Material 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 orsup
32、plier may make claim for a rehearing.C 1080 98 (2003)e128. Certification8.1 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 specificatio
33、n and hasbeen found to meet the requirements. When specified in 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 sp
34、ecification may beaccepted instead of the manufacturers certification.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-c
35、ement; cement cooling tower;non-fillASTM 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, and the ris
36、kof 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 revision of thi
37、s 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 shouldmake
38、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).C 1080 98 (2003)e13
