1、Designation:D 2828 96(Reapproved 2003)Standard Specification forNonbituminous Inserts for Contraction Joints in PortlandCement Concrete Airfield Pavements,Sawable Type1This standard is issued under the fixed designation D 2828;the number immediately following the designation indicates the year ofori
2、ginal adoption 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.The committee responsible for this standard has voted its withdrawal.In the abs
3、ence of substantial reasons that it should be continued,the Society will approve withdrawal from publication in May 1989.1.Scope1.1 This specification covers the composition,physicalproperties,dimensional tolerances,and sampling for tests ofinserts placed in portland cement concrete airfield pavemen
4、twhile the concrete is in an unhardened state to form contractionjoints.The insert may be partially or totally removed after theconcrete has hardened to provide a suitable space for a sealant.1.2 The values stated in inch-pound units are to be regardedas the standard.The metric equivalents of inch-p
5、ound unitsmay be approximate.2.Referenced Documents2.1 ASTM Standards:2D 1037 Methods for Evaluating the Properties of Wood-Base Fiber and Particle Panel Materials3.Manufacture3.1 The product shall consist of precut strips which havebeen formed from bonded natural or man-made fibers orgranules witho
6、ut the addition of bitumen.4.Physical Requirements4.1 Resistance to HandlingStrips shall be of such charac-ter as not to be deformed or broken during handling andplacement in concrete.Pieces of the insert that have beendamaged shall be rejected.4.2 Water AbsorptionA standard test specimen 4 by 4 in.
7、(100 by 100 mm)in size when submerged horizontally under 1in.(25.4 mm)of water shall absorb not more than 45.0 mg/cm2in 24 h through the six exposed faces.4.3 ExpansionA standard test specimen 4 by 4 in.in sizeafter being submerged horizontally for 24 h shall have a finalthickness between 100 and 11
8、0%of the thickness before thetest.4.4 Resistance to SawingThe material shall readily cutand disintegrate under the action of a power-driven diamond-tipped or silicon carbide water-cooled blade at a peripheralspeed of 11 000 6 1000 ft/min(3350 6 305 m/min).4.5 StiffnessThe modulus of the material of
9、the 3 by t=in.(7.5 by t=mm)(t being the nominal thickness)crosssection on a 24-t span with the long dimension the same asused for the insert will be at least:E$80 000 psi552 MPa!in bending(1)4.6 Bending StrengthThe modulus of rupture shall be atleast 600 psi(4.14 MPa)on specimens prepared with the l
10、ongdimension the same as used for the inserts.5.Dimension and Permissible Variations5.1 The preformed strip shall conform to the dimension ofthe groove shown on the plan.Strips that do not conform to thespecified dimensions within the following permissible varia-tions shall be rejected:Length=614in.
11、(6 6.3 mm)Depth=618in.(6 3.2 mm)Thickness=6116in.(61.6 mm)6.Sampling6.1 Size of SamplesEach sample shall consist of sufficientmaterial to provide at least five test specimens measuring 412by 15 in.(120 by 380 mm).6.2 Number of SamplesOne representative sample shallbe taken from each shipment of 1000
12、 ft2(100 m2)or fractionthereof of each thickness ordered or otherwise specified.6.3 Packing of SamplesSamples shall be packed fortransportation in such a manner that they will not be deformedor broken.1This specification is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and
13、 is the direct responsibility of Subcommittee D04.34 onPreformed Joint Fillers,Sealers,and Sealing Systems.Current edition approved May 10,1996.Published July 1996.Originallyapproved in 1969.Discontinued October 1987 and reinstated as D 2828 96.Lastprevious edition approved in 1996 as D 2828 96.2For
14、 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 C700,West C
15、onshohocken,PA 19428-2959,United States.7.Test Methods7.1 Determine the properties prescribed in this specificationin accordance with the following sections of Method D 1037:7.1.1 Water Absorption and ExpansionSections 69 to 73and 75.7.1.2 Stiffness and Bending StrengthSections 11,13,14,15,and 19.8.
16、Keywords8.1 airfield;contraction joints;inserts;nonbituminous;pavementsASTM International takes no position respecting the validity of any patent rights asserted 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 by the responsible technical committee and must
