1、Designation: C 1619 05Standard Specification forElastomeric Seals for Joining Concrete Structures1This standard is issued under the fixed designation C 1619; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision
2、 A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the physical property require-ments of elastomeric seals (gaskets) used to seal the joints ofprecast con
3、crete structures conforming to Specifications C14,C 14M, C118, C 118M, C 361, C 361M, C 443, C 443M,C 505,orC 505M used in gravity and low head pressureapplications.1.2 Requirements are given for natural or synthetic rubbergaskets, or a combination of both.1.3 Values stated in imperial units are to
4、be regarded as thestandard.1.4 The following precautionary caveat pertains only to thetest method portion, Section 8, of this specification. 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 es
5、tablish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2C14 Specification for Concrete Sewer, Storm Drain, andCulvert PipeC 14M Specification for Concrete Sewer, Storm Drain, andCulvert Pipe Met
6、ricC118 Specification for Concrete Pipe for Irrigation orDrainageC 118M Specification for Concrete Pipe for Irrigation orDrainage MetricC 361 Specification for Reinforced Concrete Low-HeadPressure PipeC 361M Specification for Reinforced Concrete Low-HeadPressure Pipe MetricC 443 Specification for Jo
7、ints for Concrete Pipe and Man-holes, Using Rubber GasketsC 443M Specification for Joints for Concrete Pipe andManholes, Using Rubber Gaskets MetricC 497 Test Method for Concrete Pipe, Manhole Sections, orTileC 497M Test Method for Concrete Pipe, Manhole Sections,or Tile MetricC 505 Specification fo
8、r Nonreinforced Concrete IrrigationPipe with Rubber Gasket JointsC 505M Specification for Nonreinforced Concrete Irriga-tion Pipe with Rubber Gasket Joints MetricC 822 Terminology Relating to Concrete Pipe and RelatedProductsD 395 Test Methods for Rubber PropertyCompressionSetD 412 Test Methods for
9、Vulcanized Rubber and Thermo-plastic ElastomersTensionD 471 Test Method for Rubber PropertyEffect of LiquidsD 573 Test Method for RubberDeterioration in an AirOvenD 1149 Test Method for Rubber DeteriorationSurfaceozone cracking in a ChamberD 1566 Terminology Relating to RubberD 2240 Test Method for
10、Rubber PropertyDurometerHardnessD 2527 Specification for Rubber SealsSplice Strength3. Terminology3.1 DefinitionsFor definitions of terms relating to con-crete pipe, see Terminology C 822. For definitions relating torubber or elastomers, see Terminology D 1566.4. Classification4.1 In order to provid
11、e for the various types of seals andrequirements, multiple classifications have been established.4.1.1 Class A is generally intended to cover seals in lowhead pressure piping applications not exceeding 125 ft (375kPa) where premium physical properties are required.4.1.2 Class B is generally intended
12、 for Class A and Class Eapplications that also require special oil resistant performance.4.1.3 Class C is generally intended to cover seals in appli-cations not exceeding 30 ft (9.14 m) of hydrostatic head.4.1.4 Class D is generally intended for Class C applicationsthat also require special oil resi
13、stant performance.1This specification is under the jurisdiction of ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.08 on Joints forPrecast Concrete Structures.Current edition approved May 15, 2005. Published June 2005.2For referenced ASTM standards, visit the
14、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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, Un
15、ited States.4.1.5 Class E is generally intended for gravity flow sewerpipe in applications not exceeding 30 ft (9.14 m) of hydrostatichead.5. Composition and Manufacture5.1 All gaskets shall be extruded or molded in such amanner that any cross-section will be dense, homogeneous, andfree of porosity,
16、 blisters, pitting, or other imperfections. Thegaskets shall be fabricated from an elastomeric materialmeeting the appropriate classification physical property re-quirements in Section 7. The base polymer shall be naturalrubber, synthetic rubber, or a blend of both that is acceptable tothe owner.6.
17、Dimensions and Tolerances6.1 Specified Durometer Shore A hardness shall be withinthe range given in Section 7, Table 1, and actual gasketdurometer shall conform to 6 5 points from the specifiedvalue.6.2 Cross-sectional and circumferential dimensions and tol-erances shall comply with the relevant sta
18、ndard specificationthat is referencing this standard.6.3 When in its assembled position, the gasket shall not bestretched more than 30 % of its original circumference.7. Physical Requirements7.1 The sealing portion of the gaskets shall comply with thephysical requirements listed in Table 1 when test
19、ing in accor-dance with Section 8.7.2 Gasket swell has a bearing on joint performance. It is theresponsibility of the manufacturer to set appropriate limits forswell and durometer change of the gasket material and “washoff” for the gasket lubricant. These limits shall then be verifiedby test methods
20、 described in Test Method C 497. Gasketlubricant shall not be altered, corrupted, or diluted from itsoriginal formulation as tested and certified prior to its use onthe gasket for installation purposes.7.3 Class B and Class D oil resistant gaskets shall containnot less than 50 % by volume, oil resis
21、tant polymer.8. Test Methods8.1 Laboratory tests to determine the physical properties ofthe gasket to be furnished under this specification shall beperformed on the finished product as supplied or from testspecimens taken from the finished product unless otherwisestated within this specification.8.1
22、1 Tensile Strength and ElongationSee Test MethodsD 412.8.1.2 HardnessSee Test Method D 2240, with the excep-tion of Section 5. The determination shall be taken directly onthe gasket. The presser foot shall be applied on areas that are14 in. (6.4 mm) or greater in thickness. If14 in. (6.4 mm) orgrea
23、ter thickness is not available, thinner samples shall be pliedup to obtain this thickness.8.1.3 Compression SetSee Test Methods D 395 MethodB. Test conditions to be 22 h at 70C. Specimen shall not beprepared from laboratory cured slabs or by direct molding.Because testing is required on the finished
24、 product, specimensshall not be prohibited from deviating from the standarddimensions as per Test Methods D 395 section 5.6.8.1.4 Accelerated AgingSee Test Method D 573. Testconditions to be 96 h at 70C.8.1.5 Water AbsorptionSee Test Method D 471. Use dis-tilled water for the standard liquid test. W
25、hen a 1 in. wide testsample cannot be obtained, use the greatest width obtainable.Test conditions shall be 48 h at 70C. At test completion,immediately remove from water, blot the specimen dry, anddetermine specimen weight. Calculate the volume increase.8.1.6 Ozone ResistanceDetermine the resistance
26、to ozonein accordance with Test Method D 1149.8.1.6.1 Test specimens shall be constructed from a finishedgasket cross-section and of type A.8.1.6.2 Conduct test for 72 h in 50 PPHM concentration at40C (104 6 4F) stressed at 20 % extension.8.1.7 Oil Immersion TestingSee Test Method D 471. De-termine
27、resistance to oil by calculating % volume change afterimmersing product specimen in ASTM IRM 903 oil for 70 h at100C.8.1.8 Splice Strength ClassificationSee SpecificationD 2527. No specimen for destructive test or no seal fornondestructive test shall show sign of damage at the splice.9. Test Frequen
28、cy9.1 When specified in Table 1, verification of the physicalproperties for tensile, elongation, hardness, oven aging, andcompression set shall be performed on the finished product foreach run startup and at a minimum of every 20 000 lb (9072kg) of rubber processed after a run setup. A run startup s
29、hall bedefined as the beginning of the production run of a particularcross-section of gasket and/or after significantly changing theprocessing equipment set up parameters to recover from asubstantial event.TABLE 1 Physical Property Requirements for Elastomeric SealsClass A Class B Class C Class D Cl
30、ass ETensile, min, psi (MPa) 2300 (15.9) 1500 (10.3) 1200 (8-3) 1200 (8.3) 1800 (12.4)Elongation at break, min, % 425 350 350 350 425Specified Hardness, Shore A 40-60 40-60 40-60 40-60 40-60Oven-Age Tensile reduction, max % of original 15 20 15 20 15Oven-Age Elongation reduction, max % of original 2
31、0 40 20 40 20Oven-Age hardness increase, max 15 15 Compression Set, max % 20 20 25 25 20Water Absorption, max % weight increase 5 15 10 15 5Ozone Resistance level, 50 pphm No cracks No cracks No cracks No cracks No cracksLiquid Immersion IRM 903 Oil. Max % volume change 80 80 Splice Strength Classif
32、ication Class 3 Class 2 Class 3 Class 2 Class 3C16190529.2 When specified in Table 1, verification of the physicalproperties for water absorption, ozone resistance, and oilimmersion shall be verified on an annual basis on a finishedproduct sample of the elastomeric formulation of the gasket.9.3 Form
33、ulation content of base polymer, polymer blends,or other materials shall be verified during the formulationdevelopment.10. Certification10.1 At the option of the purchaser, certified copies of testreports on the elastomer from which the shipment of gasketswas made shall be furnished by the gasket su
34、pplier.11. Storage11.1 The rubber gaskets shall be stored in a cool, clean, andshaded environment. The preferred temperature is 70F (21C)or lower.12. Marking12.1 The markings shall include at a minimum the gasketmanufacturers name or symbol, nominal pipe size, ASTMdesignation, classification, gasket
35、 cross-section (if other thancircular), cut length or volume, and month and year ofmanufacture.12.2 Additional markings and color designations shall beagreed upon by the pipe manufacturer and the gasketmanufacturer.ASTM International takes no position respecting the validity of any patent rights ass
36、erted 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 revision at any time b
37、y 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 comments will rece
38、ive 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 copyrighted by ASTM Inte
39、rnational, 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).C1619053
