1、Designation: C1619 11Standard Specification forElastomeric Seals for Joining Concrete Structures1This standard is issued under the fixed designation C1619; 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 () 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 concre
3、te structures conforming to Specifications C14,C14M, C118, C118M, C361, C361M, C443, C443M, C505,orC505M used in gravity and low head pressure applications.1.2 Requirements are given for natural or synthetic rubbergaskets, or a combination of both.1.3 The values stated in inch-pound units are to be
4、regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 The following precautionary caveat pertains only to thetest method portion, Section 8, of this specification. Thisstandard does not p
5、urport 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 healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2C1
6、4 Specification for Nonreinforced Concrete Sewer,Storm Drain, and Culvert PipeC14M Specification for Nonreinforced Concrete Sewer,Storm Drain, and Culvert Pipe (Metric)C118 Specification for Concrete Pipe for Irrigation orDrainageC118M Specification for Concrete Pipe for Irrigation orDrainage (Metri
7、c)C361 Specification for Reinforced Concrete Low-HeadPressure PipeC361M Specification for Reinforced Concrete Low-HeadPressure Pipe (Metric)C443 Specification for Joints for Concrete Pipe and Man-holes, Using Rubber GasketsC443M Specification for Joints for Concrete Pipe andManholes, Using Rubber Ga
8、skets (Metric)C497 Test Methods for Concrete Pipe, Manhole Sections, orTileC497M Test Methods for Concrete Pipe, Manhole Sections,or Tile MetricC505 Specification for Nonreinforced Concrete IrrigationPipe with Rubber Gasket JointsC505M Specification for Nonreinforced Concrete IrrigationPipe With Rub
9、ber Gasket Joints (Metric)C822 Terminology Relating to Concrete Pipe and RelatedProductsD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD573 Test Method for RubberDete
10、rioration in an AirOvenD1149 Test Methods for Rubber DeteriorationCrackingin an Ozone Controlled EnvironmentD1566 Terminology Relating to RubberD2240 Test Method for Rubber PropertyDurometerHardnessD2527 Specification for Rubber SealsSplice Strength3. Terminology3.1 DefinitionsFor definitions of ter
11、ms relating to con-crete pipe, see Terminology C822. For definitions relating torubber or elastomers, see Terminology D1566.4. Classification4.1 In order to provide for the various types of seals andrequirements, multiple classifications have been established.4.1.1 Class A is generally intended to c
12、over 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 for Class A and Class Eapplications that also require special oil resistant performance.1This specification is under the jurisdiction of
13、 ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.08 on Joints forPrecast Concrete Structures.Current edition approved Nov. 1, 2011. Published November 2011. Originallyapproved in 2005. Last previous edition approved in 2005 as C1619 05. DOI:10.1520/C1619-11.2F
14、or 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C7
15、00, West Conshohocken, PA 19428-2959, United States.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 resistant performance.4.1.5 Class E is ge
16、nerally 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 blisters, pitting, or other defects that
17、 make them unfit forthe use intended. The gaskets shall be fabricated from anelastomeric material meeting the appropriate classificationphysical property requirements in Section 7. The base polymershall be natural rubber, synthetic rubber, or a blend of both thatis acceptable to the owner.6. Dimensi
18、ons 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 standard s
19、pecificationthat 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 testing in
20、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 descri
21、bed in Test Method C497. 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 resistant pol
22、ymer.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.8.1.1 Tensi
23、le Strength and ElongationSee Test MethodsD412.8.1.2 HardnessSee Test Method D2240, 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) orgreater thickn
24、ess is not available, thinner samples shall be pliedup to obtain this thickness.8.1.3 Compression SetSee Test Methods D395 Method B.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 product, s
25、pecimensshall not be prohibited from deviating from the standarddimensions as per Test Methods D395 section 5.6.8.1.4 Accelerated AgingSee Test Method D573. Testconditions to be 96 h at 70C.8.1.5 Water AbsorptionSee Test Method D471. Use dis-tilled water for the standard liquid test. When a 1 in. wi
26、de 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 to ozonein acc
27、ordance with Test Method D1149.8.1.6.1 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 D471. De-termine resistance to oi
28、l by calculating % volume change afterimmersing product specimen in ASTM IRM 903 oil for 70 h at100C.8.1.8 Splice Strength ClassificationSee SpecificationD2527. No specimen for destructive test or no seal fornondestructive test shall show sign of damage at the splice.9. Test Frequency9.1 When specif
29、ied 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 shall bedefined as
30、 the beginning of the production run of a particularTABLE 1 Physical Property Requirements for Elastomeric SealsClass A Class B Class C Class D Class 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, S
31、hore 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 20 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 Resistan
32、ce level, 50 pphm No cracks No cracks No cracks No cracks No cracksLiquid Immersion IRM 903 Oil. Max % volume change 80 80 Splice Strength Classification Class 3 Class 2 Class 3 Class 2 Class 3C1619 112cross-section of gasket and/or after significantly changing theprocessing equipment set up paramet
33、ers to recover from asubstantial event.9.2 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 Formulation content
34、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 supplier.11. Stora
35、ge11.1 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 cross-section (
36、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 asserted in connect
37、ion 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 by the responsibl
38、e 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 receive careful cons
39、ideration 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 International, 100 B
40、arr 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 ASTM website (www.astm.org/COPYRIGHT/).C1619 113
