ASTM D2628-91(1998)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D 2628 – 91 (Reapproved 1998)
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. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) 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 D573 Test Method for Rubber—Deterioration in an Air
Oven
1.1 This specification covers the material requirements for
D575 TestMethodsforRubberPropertiesinCompression
preformed polychloroprene elastomeric joint seals for concrete
D1149 Test Method for Rubber Deterioration—Surface
pavements. The seal consists of a multiple web design and
Ozone Cracking in a Chamber (Flat Specimen)
functions only by compression of the seal between the faces of
D 2240 Test Method for Rubber Property—Durometer
the joint with the seal folding inward at the top to facilitate
Hardness
compression. The seal is installed with a lubricant and is
D3183 Practice for Rubber—Preparation of Pieces forTest
designed to seal the joint and reject incompressibles.
Purposes from Products
1.2 The values stated in inch-pound units are to be regarded
as the 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
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, all deflections shall be based on the nominal width of
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 Test Methods for Rubber Property—Compression
2 6. Workmanship
Set
D412 Test Methods for Vulcanized Rubber and Thermo- 6.1 Seals shall be free of defects in workmanship and
plastic Rubbers and Thermoplastic Elastomers—Tension materials that may affect its serviceability.
D471 Test Method for Rubber Property—Effect of Liq-
7. Sampling
uids
7.1 Alot shall consist of the quantity for each cross section
D 518 Test Method for Rubber Deterioration—Surface
Cracking agreed upon by the purchaser and the producer or supplier.
7.2 Samplesshallbetakenatrandomfromeachshipmentof
material.Iftheshipmentconsistsofmorethanonelot,eachlot
This specification is under the jurisdiction of ASTM Committee D-4 on Road
shall be sampled.
and Paving Materials and is the direct responsibility of Subcommittee D04.34 on
7.3 A minimum of 9 linear ft (2.8 m) shall constitute one
Preformed Joint Fillers and Sealers.
sample for testing purposes.
Current edition approved Jan. 25, 1991. Published March 1991. Originally
published as D2628–67T. Last previous edition D2628–81.
Annual Book of ASTM Standards, Vol 09.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 2628
TABLE 1 Physical Requirements for Preformed Elastomeric Joint Seals
Property Requirement ASTM Test Method
Tensile strength, min, psi (MPa) 2000 (13.8) D 412
Elongaton at break, min, % 250 D 412
A
Hardness, Type A durometer, points 55 6 5 D 2240 (modified)
Oven aging, 70 h at 212°F (100°C) D 573
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) D 471
Weight change, max, % 45 max
Ozone resistance D 1149
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) D 2240
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 D 2240.
B
Test in accordance with Procedure A of Test Method D 518.
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.
8. Specimen Preparation compression, place the specimen in a horizontal position such
that the plane through both edges of the top surface of the joint
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 (−10 6 1°C) for 72 h (Note 2). Then
DieDmaybeusedwhentheflatsectionsofasealaretoosmall
unclamp the assembly and remove the upper compression
for Die C. However, the requirements of Table 1 shall apply
plate, or carefully remove the specimens from the assembly
regardless of the die used. Carefully perform buffing and keep
and transfer them to a wooden surface in the refrigerated box.
t
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