1、Designation:D717405(Reapproved 2011)Standard Specification forPreformed Closed-Cell Polyolefin Expansion Joint Fillers forConcrete Paving and Structural Construction1This standard is issued under the fixed designation D7174;the number immediately following the designation indicates the year oforigin
2、al 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 preformed expansion jointfillers made from clo
3、sed-cell polyolefin materials having suit-able compressibility and nonextruding characteristics.1.1.1 Type I,closed-cell polyethylene or blended polyeth-ylene.1.2 These joint fillers are intended for use in concretepavements in full-depth joints.There are several variations insize.A typical size mea
4、sures 0.5-in.(12.7-mm)in thickness,4.0-in.(101.6-mm)in width,and 10-ft(3.048-m)in length andwill relieve stress or avoid potential distress in adjacentstructures or pavements.1.3 The values stated in inch-pound units are to be regardedas the standard.1.4 This standard does not purport to address all
5、 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:2D545 Test Methods for Pre
6、formed Expansion Joint Fillersfor Concrete Construction(Nonextruding and ResilientTypes)3.Materials and Manufacture3.1 TypeI,Closed-CellPolyethyleneorBlendedPolyethyleneThese fillers shall be made from foamed poly-ethylene or blended polyethylene,and their preformed crosssection shall be closed-cell
7、.4.Physical Properties4.1 Compressive Strength:4.1.1 MinimumLoad required to compress test specimenby 25%(to 75%of original thickness)shall not be less than5 psi(35 kPa).4.1.2 MaximumLoad required to compress test specimenby 85%(to 15%of original thickness)shall not be greaterthan 300 psi(2070 kPa).
8、4.2 RecoveryAfter compressing the test specimen to 50%of its thickness before test,the load shall be released;and 10min after release of the load,the specimen shall have recoveredto at least 95%of its thickness before test.4.3 ExtrusionWhen a 1.0-in.(25.4-mm)thick test speci-men is compressed to 50%
9、of its original thickness with threeof its edges restrained,the free edge shall extrude not morethan 0.5-in.(12.7-mm).4.4 Structural CharacteristicsClosed-cell expansion jointfiller units shall have sufficient strength and resiliency towithstand on-the-job handling without breakage or permanentdefor
10、mation.5.Dimensions,Mass,and Permissible Variations5.1 Expansion joint filler units shall conform to dimensionsas specified:5.1.1 Thickness,+10,0%.5.1.2 Width,+0.8,0 in.(+20.3,0 mm).5.1.3 Length,+3.0,0 in.(+76.2,0 mm).6.Sampling6.1 Size of SamplesEach sample shall consist of sufficientmaterial to pr
11、ovide at least ten test specimens measuring 4.5 by4.5 in.(114.3 by 114.3 mm),or as required by the user agency.Unless otherwise specified under applicable test method,testspecimens shall be the same thickness as the expansion jointfiller units to be installed.6.2 Number of SamplesSelect one represen
12、tative samplefrom each shipment of material capable of filling 5000 linear ft(1524 m)of expansion joint filler.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
13、 Sealing Systems.Current edition approved June 1,2011.Published July 2011.Originally pub-lished 2005.Last previous edition approved 2005 as D717405.DOI:10.1520/D7174-05R11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual
14、 Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 7.Test Methods7.1 ScopeDetermine the physical requirements prescribedin this specifi
15、cation under 4.2 and 4.3,in accordance with TestMethod D545.7.2 Compressive Strength(see 4.1)Determine in accor-dance with Method D545 with the following exception:Thecompressive strength shall be determined at deflections of 25and 85%.8.Inspection8.1 Inspection of the material and selection of samp
16、le orsamples to be tested may be made either at the point ofshipment or at the point of delivery,as agreed upon.9.Rejection and Rehearing9.1 If a selected sample fails to conform to any of therequirements of this specification,select two additionalsamples from the same lot and test.Both retest samples shallmeet the requirements of this specification or the lot will berejected.10.Precision and Bias10.1 Precision and bias statements for the tests in sections4.2 and 7.2 have not been developed at t