1、Designation: C1080 98 (Reapproved 2014)Standard Specification forAsbestos-Cement Products Other Than Fill For CoolingTowers1This standard is issued under the fixed designation C1080; 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 1Asb
3、estos-cement pipes are covered in Specifications C296and C428; and asbestos-cement heat exchange fill products are covered inSpecification C1082 for flat fill and Specification C1081 for corrugatedfill.1.2 The following classes of products are covered:Paragraph ClassificationsDrift eliminators or de
4、misters 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 auto-c
5、laving 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 those
6、 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 The fol
7、lowing 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 health
8、practices and to determine the applicability of regulatorylimitations prior to use. For a specific safety hazard, see 1.4.2. Referenced Documents2.1 ASTM Standards:3C150 Specification for Portland CementC220 Specification for Flat Asbestos-Cement SheetsC221 Specification for Corrugated Asbestos-Ceme
9、nt SheetsC223 Specification for Asbestos-Cement SidingC296 Specification for Asbestos-Cement Pressure PipeC428 Specification forAsbestos-Cement Nonpressure SewerPipeC458 Test Method for Organic Fiber Content of Asbestos-Cement ProductsC459 Test Methods for Asbestos-Cement Flat ProductsC1081 Specific
10、ation for Asbestos-Cement Corrugated FillFor Use in Cooling TowersC1082 Specification for Asbestos-Cement Flat Sheet forCooling Tower FillD2946 Terminology for Asbestos and AsbestosCementProducts2.2 DIN Standard:DIN 274 Asbestzement-Weilplatten43. Terminology3.1 DefinitionsThe definitions covered in
11、 TerminologyD2946 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 cementType I as defi
12、ned in Specification C150 together with silica inthe ratio of 3:2 that can react to form calcium silicate reactionproducts.3.3 pressed productsinclude those that are pressed singly1This specification is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct
13、 responsibility of SubcommitteeC17.03 on Asbestos - Cement Sheet Products and Accessories.Current edition approved Dec. 1, 2014. Published December 2014. Originallyapproved in 1987. Last previous edition approved in 2008 as C1080 98(2008).DOI: 10.1520/C1080-98R14.2Available from The Asbestos Institu
14、te, http:/ 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 V
15、erlag GmbH,Auslieferung, Post Fach 1107, D-1000 Berlin 30, Germany.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1or in stacks interlayered with templates, at a minimum pressureof 12 MPa (1740 psi).4. Classifications4.1 Drift Elimina
16、tors or 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 C459)2.2mm(0.1in.)Minimum average bendingMoment calculated as in DIN
17、 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 (316 in.)Pitch 155 mm (7 in.)Deflection, minimum (in accordancewi
18、th Test Methods C459)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 C220 (T
19、ype F), orC223, 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 C221.4.2.2 Class BLouver materials
20、 consisting of flat sheetsthat meet requirements in Specifications C220 or C223.4.3 Casing Panels:4.3.1 Class ACasing panels intended for demanding ap-plications. In addition to compliance with Specifications C220for flat panels or C221 for corrugated panels, Type I casingpanels must be made from Ty
21、pe V cement as defined inSpecification C150 and must have a minimum apparent densityof 1.6 g/cm3(100 lb/ft3).4.3.2 Class BCasing panels intended for less demandingservice need only comply with Specification C220 for flatpanels or Specification C221 for corrugated panels.4.4 Asbestos-Cement Pressure
22、Pipes:4.4.1 Classes 100, 150, and 200 shall conform with Speci-fication C296.4.5 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 C428.4.6 Cooling Tower Fill:4.6.1
23、Flat sheet fill (heat transfer panels).4.6.1.1 Classes A, B, and C shall conform with Specifica-tions C1081 and C1082.4.6.2 Corrugated Sheet Fill (heat transfer panels)Class Amust conform with Specifications C1081.4.6.3 Splash BarsSplash bar Types I and II must conformwith Specifications C1082.5. Te
24、st 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 MethodsC459.5.3 Flexural Strength and Modulus of RuptureIn accor-dance with Test Method
25、s C459.5.4 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 hand spray bottl
26、e 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. The twice-d
27、aily 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. Then the spe
28、cimen 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 highertemperatures are
29、each of 23 h 45 min at oven temperaturesspecified as follows:3rd drying 120 2C (258 3F)4th drying 130 2C (266 3F)5th drying 140 2C (284 3F)6th drying 150 2C (302 3F)7th drying 160 2C (320 3F)5.5.3 The number of cycles sustained without deteriorationis reported.5.6 Additional details are presented in
30、 Specifications C220,C221, C296, C1081, and C1082, Test Method C458 and TestMethods C459.6. 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 Material that fails to conform to the require
31、ments 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.C1080 98 (2014)28. Certification8.1 When specified in the purcha
32、se 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 thepurchase order or contract a report o
33、f 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 certification.9. Product Marking9.1 For all but
34、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 position respecting the validity of any
35、 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 responsibility.This standard is subject to revi
36、sion 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 to ASTM International Headquarters. Your
37、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 address shown below.This standard is copyri
38、ghted 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 98 (2014)3
