ASTM D3542-08(2019)
(Specification)Standard Specification for Preformed Polychloroprene Elastomeric Joint Seals for Bridges
Standard Specification for Preformed Polychloroprene Elastomeric Joint Seals for Bridges
ABSTRACT
This specification covers the material requirements for preformed polychloroprene elastomeric joint seals proposed for use in bridges. The multiple-web seals function by compression of the seal between the faces of the joint with the seal folding inward at the top. The seal is installed with a lubricant and is designed to seal the joint and reject incompressibles. The materials shall also conform to the physical properties prescribed herein such as tensile strength, elongation, hardness, ozone resistance, low-temperature recovery, high-temperature recovery, and compression-deflection properties.
SCOPE
1.1 This specification covers the material requirements for preformed polychloroprene elastomeric joint seals for bridges. The seal consists of a multiple-web design composed of polychloroprene and functions only by compression of the seal between the faces of the joint with the seal folding inward at the top to facilitate compression. The seal is installed with a lubricant adhesive and is designed to seal the joint and reject incompressibles.
Note 1: This specification may not be applicable for seals whose height is less than 90 % of its nominal width.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:D3542 −08 (Reapproved 2019)
Standard Specification for
Preformed Polychloroprene Elastomeric Joint Seals for
Bridges
This standard is issued under the fixed designation D3542; 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.
1. Scope D471Test Method for Rubber Property—Effect of Liquids
D518 Test Method for Rubber Deterioration—Surface
1.1 This specification covers the material requirements for
Cracking (Withdrawn 2007)
preformed polychloroprene elastomeric joint seals for bridges.
D573Test Method for Rubber—Deterioration in an Air
The seal consists of a multiple-web design composed of
Oven
polychloropreneandfunctionsonlybycompressionoftheseal
D575Test Methods for Rubber Properties in Compression
between the faces of the joint with the seal folding inward at
D1149Test Methods for Rubber Deterioration—Cracking in
the top to facilitate compression. The seal is installed with a
an Ozone Controlled Environment
lubricant adhesive and is designed to seal the joint and reject
D2240Test Method for Rubber Property—Durometer Hard-
incompressibles.
ness
NOTE 1—This specification may not be applicable for seals whose
D3040Practice for Preparing Precision Statements for Stan-
height is less than 90% of its nominal width.
dards Related to Rubber and Rubber Testing (Withdrawn
1.2 The values stated in inch-pound units are to be regarded
1987)
as standard. The values given in parentheses are mathematical
3. Marking and Ordering Information
conversions to SI units that are provided for information only
and are not considered standard.
3.1 Each lot of seal shall be marked with characters of not
less than 0.25 in. (6.35 mm) in height on the top of the seal at
1.3 This standard does not purport to address all of the
a maximum of 4 ft (1.22 m) intervals showing the lot number,
safety concerns, if any, associated with its use. It is the
date of manufacture, and the manufacturing seal designation.
responsibility of the user of this standard to establish appro-
Thesealshallalsohavediemarkingswhichareregisteredwith
priate safety, health, and environmental practices and deter-
the Rubber Manufacturers Association (RMA).
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
3.2 The purchaser shall specify the anticipated required
dance with internationally recognized principles on standard-
minimum acceptable joint movement, and either the minimum
ization established in the Decision on Principles for the
joint opening, or the nominal width of seal.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical 4. Materials and Manufacture
Barriers to Trade (TBT) Committee.
4.1 The seals shall be preformed, and the material shall be
vulcanized elastomeric compound using virgin polychloro-
2. Referenced Documents
prene as the only polymer.
2.1 ASTM Standards:
5. Physical Requirements
D395Test Methods for Rubber Property—Compression Set
D412TestMethodsforVulcanizedRubberandThermoplas-
5.1 The materials shall conform to the physical properties
tic Elastomers—Tension
prescribed in Table 1.
5.2 In the applicable requirements of Table 1 and the test
methods, all deflection shall be based on the nominal width.
This specification is under the jurisdiction ofASTM Committee D04 on Road
and Paving Materials and is the direct responsibility of Subcommittee D04.34 on
Preformed Joint Fillers, Sealers and Sealing Systems.
6. Dimensions and Working Parameters
Current edition approved Nov. 1, 2019. Published November 2019. Originally
6.1 The size, shape, and dimensional tolerances shall be as
approved in 1976. Last previous edition approved in 2013 as D3542–08 (2013).
DOI: 10.1520/D3542-08R19.
outlined in 6.1.1.
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 The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3542−08 (2019)
TABLE 1 Physical Requirements for Preformed Elastomeric Joint Seals
Requirements ASTM Test Method
Tensile strength, min, psi (MPa) 2000 (13.8) D412
Elongation at break, min, % 250 D412
A
Hardness, Type A durometer, points 55 ± 5 D2240 (modified)
Oven aging, 70 h at 212 °F (100 °C)
Tensile strength, max, % loss 20
Elongation, max, % loss 20
Hardness, Type A durometer, points change 0 to 10
Oil swell, ASTM Oil No. 3, 70 h at 212 °F:
70 h at 212 °F (100 °C)
Weight change, max, % 45 D471
B C
Ozone resistance no cracks D1149
20 % strain, 300 pphm in air, 70 h, at 104 °F (40 °C) (wiped with toluene to remove surface
contamination)
Low-temperature recovery,
72 h at 14 °F (−10 °C), 50 percent:
D
Deflection, min, % 88 Section 8.2
Low-temperature recovery,
22 h at −20 °F (−29 °C), 50 %:
D
Deflection, min, % 83 Section 8.2
High-temperature recovery,
70 h, at 212 °F (100 °C), 50 %:
D
Deflection, min, % 85 Section 8.2
Compression-deflection properties:
E
LC min in. (mm) See 8.3.5 D575 Method A (modified)
LC max in. (mm) See 8.3.5
Movement range, in. (mm) See 8.3.5
A
The term “modified” in the table relates to the specimen preparation. The use of the joint seal as the specimen source requires that more plies than specified in either
ofthemodifiedtestproceduresbeused.Suchspecimenmodificationshallbeagreeduponbetweenthepurchaserandthesupplierpriortotesting.Thehardnesstestshall
be made with the durometer in a durometer stand as recommended in Test Method D2240.
B
Sample prepared in accordance with Method 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 section and subsections are those of this specification. The values found in 6.2.2 – 6.2.4 shall be within the range specified by the purchaser in 3.2.
E
Speed of testing shall be 0.5 ± 0.05 in. (13 ± 1.3 mm), min at room temperature of 73 ± 4 °F (23 ± 2.2 °C). The sheets of sandpaper are not used.
6.1.1 Measurements used for laboratory testing shall be (20.68 kPa). The LC min shall be determined in accordance
taken to the nearest 0.01 in. (0.3 mm) and reported/recorded to
with 9.3. For the purpose of calculating movement range, a
the nearest 0.1 in. (3 mm) as the average of three measure-
valueat85%ofnominalwidthshallbeusedforLCminwhen
ments.Themeasuredwidthshallbegreaterthanorequaltothe
the measured value of LC min exceeds 85%.
nominal width. The seal height shall not be less than 90% of
NOTE 2—If the seal generates a pressure of 3 psi at 90% of nominal
the nominal width unless joint recess dimensions or special
width, LC min equals 85%. However, if the seal generates 3 psi at 70%
design considerations dictate the geometry.
of nominal width, the LC min equals 70%.
6.2 Compression Deflection Properties—The contact pres-
6.2.3 The maximum limit of compressibility (LC max) is
sure expressed in pounds-force per square inch (or pascals)
definedasthecompressedwidth(expressedintermsofpercent
when the seal is compressed to any particular width indicates
ofnominalwidth)correspondingtoacontactpressureof35psi
the stress-strain relationship that exists in the seal. This
(241.32 kPa). The LC max shall be determined in accordance
relationship is dependent on both the properties of the elasto-
with 9.3. LC max has been designated at 35 psi (241.32 kPa)
mer and the cross-sectional configuration of the seal.
inordertomitigatethetendenciestowardpressuredecayofthe
Therefore, for a predetermined allowable pressure, a definitive
seal during use. A reading of 35 psi is considered an absolute
relationshipwillexistandtheworkinglimitsofthesealmaybe
maximum pressure which should not be exceeded.
defined.
6.2.1 The working limits (minimum and maximum degrees
6.2.4 The movement range of the seal is defined as the
of compression) of the seal shall be determined on the basis of
numerical difference between the LC min and the LC max
the minimum and maximum limits of compressibility (LC min
expressed in inches (mm). For the purpose of calculating the
andLCmax),andthemovementrangeasspecifiedherein.The
movement range, a value at 85% shall be used for LC min
purchaser shall specify the movement range, anticipated maxi-
when the measured value of LC min exceeds 85%. For
mum joint opening, and the target nominal width of seal. Seals
purposes of acceptance testing, the calculated movement range
with nominal width differing from that specified are
of the seal shall not be less than the specified value by more
acceptable, providing the compressed width at LC max is less
than 5%.
thantheminimumanticipatedjointopening,andthemovement
range requirement is met.
7. Sampling
6.2.2 The minimum limit of compressibility (LC min) is
7.1 Alot shall consist of the quantity for each cross section
definedasthecompressedwidth(expressedintermsofpercent
of nominal width) corresponding to a contact pressure of 3 psi agreed upon between the purchaser and the supplier.
D3542−08 (2019)
7.2 Samplesshallbetakenatrandomfromeachshipmentof it to a wooden surface in the refrigerated box. Allow the
material.Iftheshipmentconsistsofmorethanonelot,eachlot specimen to recover for 1 h at 14 6 2°F (−10 6 1.1°C).
shall be sampled. Measure the recovered width in the center of the 6-in.
(150-mm)lengthatboththetopandbottomlongitudinaledges
7.3 The minimum lengths of samples for testing purposes
of the specimen. The recovered width shall be taken as an
shallbeasprescribedbythepurchaserorasprescribedinTable
average of these two measurements. Measurements may be
2.
made with either a dial caliper or a plat
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