1、Designation: D 7174 05Standard Specification forPreformed Closed-Cell Polyolefin Expansion Joint Fillers forConcrete Paving and Structural Construction1This standard is issued under the fixed designation D 7174; the number immediately following the designation indicates the year oforiginal adoption
2、or, in the case of revision, the year of last revision. 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 preformed expansion jointfillers made from closed-
3、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 meas
4、ures 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 addre
5、ss 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:2D 545 Test Meth
6、ods of Testing Preformed Expansion JointFillers for Concrete Construction (Nonextruding and Re-silient Types)3. Materials and Manufacture3.1 Type I, Closed-Cell Polyethylene or BlendedPolyethyleneThese fillers shall be made from foamed poly-ethylene or blended polyethylene, and their preformed cross
7、section shall be closed-cell.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) sha
8、ll not be greaterthan 300 psi (2070 kPa).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. (2
9、5.4-mm) thick test speci-men is compressed to 50 % 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 o
10、n-the-job handling without breakage or permanentdeformation.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
11、Size of SamplesEach sample shall consist of sufficientmaterial to provide 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 joi
12、ntfiller units to be installed.6.2 Number of SamplesSelect one representative 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 res
13、ponsibility of Subcommittee D04.34 onPreformed Joint Fillers, Sealers and Sealing Systems.Current edition approved June 1, 2005. Published June 2005.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStanda
14、rds 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, United States.7. Test Methods7.1 ScopeDetermine the physical requirements prescribedin this specification under
15、 4.2 and 4.3, in accordance with TestMethod D 545.7.2 Compressive Strength (see 4.1)Determine in accor-dance with Method D 545 with the following exception: Thecompressive strength shall be determined at deflections of 25and 85 %.8. Inspection8.1 Inspection of the material and selection of sample or
16、samples 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 sample
17、s 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 this time. Therefore,this standard should not be used for acceptance or rejection ofa material for pu
18、rchasing purposes.11. Keywords11.1 cellular plastic; closed-cell; expansion joint; filler;joint; polyethylene; polyolefin; preformedASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard
19、 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 responsible technical committee and must be reviewed every five years andif n
20、ot 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 consideration at a meeting of theresponsible technical committee, which
21、 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 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).D7174052
