1、Designation:C87598(Reapproved 2014)Standard Specification forAsbestos-Cement Conduit1This standard is issued under the fixed designation C875;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in paren
2、theses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers asbestos-cement conduit foruse in electric-power systems and communication systems.The service is for both underground and expos
3、ed conditions.1.2 The values stated in SI units are to be regarded as thestandard.The values stated in parentheses are provided forinformation only.1.3 WarningBreathing of asbestos dust is hazardous.Asbestos and asbestos products present demonstrated healthrisks for users and for those with whom the
4、y 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.”21.4 This standard does not purp
5、ort 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.See 1.3 for specifichazard warning.2.Referenced D
6、ocuments2.1 ASTM Standards:3C150 Specification for Portland CementC458 Test Method for Organic Fiber Content of Asbestos-Cement ProductsC500 Test Methods for Asbestos-Cement PipeC595 Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan fo
7、r Use in ConcreteD2946 Terminology for Asbestos and AsbestosCementProducts2.2 Military Standard:MIL-STD-129 Marking for Shipment and Storage42.3 Federal Standard:Fed.Std.No.123 Marking for Shipment(Civil Agencies)42.4 Other Standards:Uniform Freight Classification Rules5National Motor Freight Classi
8、fication Rules6AIA,RCP2,Asbestos-Cement Products3.Terminology3.1 Definitions:3.1.1 conduit,nasbestos-cement pipe used to protectwires for electric-power or communication systems,for bothunderground and exposed situations.3.1.2 couplingcomponent made from a larger diameterpipe of the same type or Typ
9、e II and of the same class or ahigher class,or produced otherwise to yield at least equalperformance,for joining asbestos-cement pipe that whenproperly installed,forms a silt-tight joint,allows alignmentcorrections and slight changes in direction,and provides anassembled joint equivalent in servicea
10、bility and strength to thepipe sections.3.1.3 fittingsfittings such as adapters,reducers,increasers,bends,and bell ends,for use in laying asbestos-cement conduitas described in Section 5 and made to such dimensions as willprovide equivalent strength and silt-tight joints when as-sembled with the con
11、duit.3.1.4 lota lot as used herein is defined as each 1000lengths of conduit or less,of a given class,type,and sizemanufactured on one machine during a 24-h period.3.2 Additional terminology is given in Terminology D2946.4.Classification4.1 The classes of conduit shall be as follows:1This specificat
12、ion is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct responsibility of C17.03 onAsbestos-Cement Sheet Products and Accessories.Current edition approved Dec.1,2014.Published December 2014.Originallyapproved in 1977.Last previous edition approved in
13、2008 as C875 98(2008).DOI:10.1520/C0875-98R14.2Available from The Asbestos Institute,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 pag
14、e onthe ASTM website.4Available from Standardization Documents Order Desk,Bldg.4,Section D,700 Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.5Available from the Uniform Classification Commission,Room 1106,222 S.Riverside Plaza,Chicago,IL 60606.6Available from National Motor Freight Inc.,1616 P
15、St.NW,Washington,DC 20036.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Class BIntended for use encased in concrete after instal-lation.Class CIntended for use without concrete encasement,orfor exposed services.4.2 The types of conduit
16、shall be known as Type I and TypeII corresponding to the chemical requirements given in Section6 of this specification.For a more thorough understanding andas a guide to the chemical resistance of asbestos-cementconduit,reference is made to Test Methods C500.NOTE1To assist the purchaser in choosing the type of conduit mostsuitable for his use,the following descriptions of usage may be consid-ered:Type IFor use where nonaggressive water and soil of moderatesulphate content are expected to come in
