ASTM D2628-91(2005)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D2628 – 91 (Reapproved 2005)
Standard Specification for
Preformed Polychloroprene Elastomeric Joint Seals for
Concrete Pavements
This standard is issued under the fixed designation D2628; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope D518 Test Method for Rubber Deterioration—Surface
Cracking
1.1 This specification covers the material requirements for
D573 Test Method for Rubber—Deterioration in an Air
preformed polychloroprene elastomeric joint seals for concrete
Oven
pavements. The seal consists of a multiple web design and
D575 Test Methods for Rubber Properties in Compression
functions only by compression of the seal between the faces of
D1149 Test Methods for Rubber Deterioration—Cracking
the joint with the seal folding inward at the top to facilitate
in an Ozone Controlled Environment
compression. The seal is installed with a lubricant and is
D2240 Test Method for Rubber Property—Durometer
designed to seal the joint and reject incompressibles.
Hardness
1.2 The values stated in inch-pound units are to be regarded
D3183 Practice for Rubber—Preparation of Pieces for Test
as standard. The values given in parentheses are mathematical
Purposes from Products
conversions to SI units that are provided for information only
and are not considered standard.
3. Materials and Manufacture
1.3 This standard does not purport to address the safety
3.1 The seals shall be preformed, and the material shall be
concerns, if any, associated with its use. It is the responsibility
vulcanized elastomeric compound using polychloroprene as
of the user of this standard to establish appropriate safety and
the only base polymer.
health practices and determine the applicability of regulatory
limitations prior to use.
4. Physical Requirements Physical Requirements
NOTE 1—This specification is a manufacturing and purchasing specifi-
4.1 The materials shall conform to the physical properties
cation only and does not include requirements or considerations for
prescribed in Table 1.
selectionofsize,ortheinstallationofthejointseals.However,experience
4.2 In the applicable requirements of Table 1 and the test
has shown that successful performance of this product depends upon the
methods,alldeflectionsshallbebasedonthenominalwidthof
proper selection of size and cross-sectional design of the joint seal, joint
the seal.
size, and joint spacing for the ambient conditions the pavement will be
exposed to, and care in the installation of the joint seals.
5. Dimensions and Permissible Variations
2. Referenced Documents
5.1 The size, shape, and dimensional variations shall be as
2.1 ASTM Standards:
agreed upon by the purchaser and the producer or supplier.
D395 TestMethodsforRubberProperty—CompressionSet
6. Workmanship
D412 Test Methods for Vulcanized Rubber and Thermo-
plastic Elastomers—Tension 6.1 Seals shall be free of defects in workmanship and
D471 Test Method for Rubber Property—Effect of Liquids materials that may affect its serviceability.
7. Sampling
This specification is under the jurisdiction ofASTM Committee D04 on Road
7.1 Alot shall consist of the quantity for each cross section
and Paving Materials and is the direct responsibility of Subcommittee D04.34 on
agreed upon by the purchaser and the producer or supplier.
Preformed Joint Fillers and Sealers.
7.2 Samplesshallbetakenatrandomfromeachshipmentof
Current edition approved June 1, 2005. Published June 2005. Originally
approved in 1967. Last previous edition approved in 1998 as D2628–91(1998). material.Iftheshipmentconsistsofmorethanonelot,eachlot
DOI: 10.1520/D2628-91R05.
shall be sampled.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on Withdrawn. The last approved version of this historical standard is referenced
the ASTM website. on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D2628 – 91 (2005)
TABLE 1 Physical Requirements for Preformed Elastomeric Joint Seals
Property Requirement ASTM Test Method
Tensile strength, min, psi (MPa) 2000 (13.8) D412
Elongaton at break, min, % 250 D412
A
Hardness, Type A durometer, points 55 6 5 D2240 (modified)
Oven aging, 70 h at 212°F (100°C) D573
Tensile strength, loss, max, % 20 max
Elongation, loss, max, % 20 max
Hardness, Type A durometer, points change 0 to + 10
Oil Swell, ASTM Oil 3, 70 h at 212°F (100°C) D471
Weight change, max, % 45 max
Ozone resistance D1149
B
20 % strain, 300 pphm in air, 70 h (modified)
at 104°F (40°C) no cracks
Low-temperature stiffening, 7 days at 14°F (−10°C) D2240
Hardness, Type A durometer, points change 0 to + 15
C
Low-temperature recovery, 72 h at 14°F (−10°C)
D
50 % deflection, min % 88 9.2
C D
Low-temperature recovery, 22 h at − 20°F (−29°C), 50 % deflection, 83 9.2
min %
C D
High-temperature recovery, 70 h at 212°F (100°C), 50 % 85 9.2
deflection, min %
D
Compression-deflection, at 80 % of nominal width, min, lbf/in. (N/m) 3.5 (613) 9.3
A
The term “modified” in the table relates to the specimen preparation. The use of joint seal as the specimen source requires that more plies than specified in either of
themodifiedtestproceduresbeused.Suchspecimenmodificationshallbeagreeduponbythepurchaserandsellerpriortotesting.Thehardnesstestshallbemadewith
the durometer in a durometer stand as recommended in Test Method D2240.
B
Test in accordance with Procedure A of Test Method D518.
C
Cracking, splitting, or sticking of a specimen during a recovery test shall mean that the specimen has failed the test.
D
The reference sections are those of this specification.
7.3 A minimum of 9 linear ft (2.8 m) shall constitute one 9.2.2 Deflect the specimens between parallel plates to 50%
sample for testing purposes. of the nominal width of the seal using the compression device
described in Method B of Test Methods D395. Prior to
8. Specimen Preparation
compression, place the specimen in a horizontal position such
thattheplanethroughbothedgesofthetopsurfaceofthejoint
8.1 Cut or buff all test specimens from the sample of
seal is perpendicular to the compression plates. As the speci-
preformed seal. Except as otherwise specified in the applicable
men is being compressed, the top surface of the joint seal
specifications or test methods, prepare specimens in accor-
should fold inward toward the center of the specimen.
dance with the requirements of Practice D3183.
9.2.3 Place a clamp assembly containing the compressed
8.2 Prepare specimens for determining tensile strength and
specimens in a refrigerated box capable of maintaining a
elongation using Die C (Test Methods D412) when possible.
temperature of 146 2°F (
...