ASTM_D_3542_-_08_2013.pdf

Designation:D354208(Reapproved 2013)Standard Specification forPreformed Polychloroprene Elastomeric Joint Seals forBridges1This standard is issued under the fixed designation D3542;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 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 material requirements forpreformed polychloroprene elastomeric joint seals for bridges.The seal consists of a multiple-web design composed ofpolychloroprene and functions only by compression of the sealbetween the faces of the joint with the seal folding inward atthe top to facilitate compression.The seal is installed with alubricant adhesive and is designed to seal the joint and rejectincompressibles.NOTE1This specification may not be applicable for seals whoseheight is less than 90%of its nominal width.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport 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.2.Referenced Documents2.1 ASTM Standards:2D395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD518 Test Method for Rubber DeteriorationSurfaceCracking(Withdrawn 2007)3D573 Test Method for RubberDeterioration in an AirOvenD575 Test Methods for Rubber Properties in CompressionD1149 Test Methods for Rubber DeteriorationCracking inan Ozone Controlled EnvironmentD2240 Test Method for Rubber PropertyDurometer Hard-nessD3040 Practice for Preparing Precision Statements for Stan-dards Related to Rubber and Rubber Testing(Withdrawn1987)33.Marking and Ordering Information3.1 Each lot of seal shall be marked with characters of notless than 0.25 in.(6.35 mm)in height on the top of the seal ata maximum of 4 ft(1.22 m)intervals showing the lot number,date of manufacture,and the manufacturing seal designation.The seal shall also have die markings which are registered withthe Rubber Manufacturers Association(RMA).3.2 The purchaser shall specify the anticipated requiredminimum acceptable joint movement,and either the minimumjoint opening,or the nominal width of seal.4.Materials and Manufacture4.1 The seals shall be preformed,and the material shall bevulcanized elastomeric compound using virgin polychloro-prene as the only polymer.5.Physical Requirements5.1 The materials shall conform to the physical propertiesprescribed in Table 1.5.2 In the applicable requirements of Table 1 and the testmethods,all deflection shall be based on the nominal width.6.Dimensions and Working Parameters6.1 The size,shape and dimensional tolerances shall be asoutlined in 6.1.1.6.1.1 Measurements used for laboratory testing shall betaken to the nearest 0.01 in.(0.3 mm)and reported/recorded tothe nearest 0.1 in.(3 mm)as the average of three measure-ments.The measured width shall be greater than or equal to thenominal width.The seal height shall not be less than 90%ofthe nominal width unless joint recess dimensions or specialdesign considerations dictate the geometry.1This specification is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.34 onPreformed Joint Fillers,Sealers and Sealing Systems.Current edition approved Sept.1,2013.Published November 2013.Originallyapproved in 1976.Last previous edition approved in 2008 as D3542 08.DOI:10.1520/D3542-08R13.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.2 Compression Deflection PropertiesThe contact pres-sure expressed in pounds-force per square inch(or pascals)when the seal is compressed to any particular width indicatesthe stress-strain relationship that exists in the seal.Thisrelationship is dependent on both the properties of the elasto-mer and the cross-sectional configuration of the seal.Therefore,for a predetermined allowable pressure,a definitiverelationship will exist and the working limits of the seal may bedefined.6.2.1 The working limits(minimum and maximum degreesof compression)of the seal shall be determined on the basis o