ASTM C1518-16

Standard Specification for Precured Elastomeric Silicone Joint Sealants

ABSTRACT
This specification describes the properties of applied, flat shaped precured elastomeric silicone joint sealants that bridge joint openings and are adhered to joint substrates utilizing a liquid applied silicone adhesive sealant to seal building openings such as panel joints, metal flashing joints, or other building openings in place of conventional liquid applied sealants. Seals are applied in three different configurations, as follows: as a bridge joint, the seal is applied flat on the surface to cover a joint opening; as a beveled bridge joint, the seal is applied on the beveled edge of a substrate to bridge a joint opening.; as a U-joint, the seal is applied in a U-configuration within a joint. Seals are classified into Movement Classes on the basis of movement capability, and Tear Class on the basis of tear propagation. Seals should adhere to specified requirements as to stability, color and texture, application, adhesion and cohesion, and movement, modulus, and tear characteristics.
SCOPE
1.1 Precured elastomeric silicone joint sealants, hereinafter referred to as seal, are manufactured in flat, cured, extruded shapes and are primarily used to span joint openings in construction. This specification describes the properties of applied, flat shaped precured elastomeric silicone joint sealants, hereinafter referred to as applied seal, that bridge joint openings and are adhered to joint substrates utilizing a liquid applied silicone adhesive sealant, specified by the manufacturer, hereinafter referred to as adhesive to construction substrates, to seal building openings such as panel joints, metal flashing joints, or other building openings in place of conventional liquid applied sealants.  
1.2 Seals are applied in three different configurations:  
1.2.1 As a bridge joint, the seal is applied flat on the surface to cover a joint opening. See Fig. 1.  
1.3 This specification is for a flat extruded shape. A three-dimensional shape used at a joint cross section or termination is being considered for future inclusion in the specification.  
1.4 An applied seal meeting the requirements of this specification shall be designated by the manufacturer as to movement class and tear class as described in Section 5.  
1.5 The values stated in SI units are to be regarded as the standard. The values given in brackets are for information only.

General Information

• Status: Historical
• Publication Date: 31-May-2016
• ICS: 83.060 - Rubber
• Technical Committee: C24 - Building Seals and Sealants
• Drafting Committee: C24.10 - Specifications, Guides and Practices

Standards Content (Sample)

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:C1518 −16
Standard Specification for
1
Precured Elastomeric Silicone Joint Sealants
This standard is issued under the fixed designation C1518; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope C1442 Practice for Conducting Tests on Sealants Using
Artificial Weathering Apparatus
1.1 Precured elastomeric silicone joint sealants, hereinafter
C1523 Test Method for Determining Modulus, Tear and
referred to as seal, are manufactured in flat, cured, extruded
Adhesion Properties of Precured Elastomeric Joint Seal-
shapes and are primarily used to span joint openings in
ants
construction. This specification describes the properties of
D1566 Terminology Relating to Rubber
applied, flat shaped precured elastomeric silicone joint
G113 Terminology Relating to Natural andArtificial Weath-
sealants,hereinafterreferredtoasappliedseal,thatbridgejoint
ering Tests of Nonmetallic Materials
openings and are adhered to joint substrates utilizing a liquid
applied silicone adhesive sealant, specified by the
3. Terminology
manufacturer, hereinafter referred to as adhesive to construc-
3.1 Definitions:
tion substrates, to seal building openings such as panel joints,
3.1.1 Refer to Terminology C717 for definitions of terms
metal flashing joints, or other building openings in place of
used in this standard, including but not limited to the follow-
conventional liquid applied sealants.
ing: cohesive failure, adhesive failure, elastomeric, elongation,
1.2 Seals are applied in three different configurations:
joint, modulus, primer, seal, sealant, shelf-life, substrate.
1.2.1 As a bridge joint, the seal is applied flat on the surface
3.1.2 Refer to Terminology G113 for definitions related to
to cover a joint opening. See Fig. 1.
artificial weathering.
1.2.2 As a beveled bridge joint, the seal is applied on the
3.1.3 Refer to Terminology D1566 for tear.
beveled edge of a substrate to bridge a joint opening. See Fig.
4. Significance and Use
2.
1.2.3 As a U-joint, the seal is applied in a U-configuration 4.1 This specification describes several classifications of
within a joint. See Fig. 3. appliedsealsasdescribedinSection5.Thepurchaserordesign
professional shall recognize that not all materials meeting this
1.3 This specification is for a flat extruded shape. A three-
specification are suitable for all applications and substrates. It
dimensional shape used at a joint cross section or termination
is essential, therefore, that the proper classification of the seal
is being considered for future inclusion in the specification.
system is provided for the intended use. The test methods in
1.4 An applied seal meeting the requirements of this speci-
this specification relate to elastomeric performance, adhesion
fication shall be designated by the manufacturer as to move-
of the adhesive to the seal and adhesion of the adhesive to the
ment class and tear class as described in Section 5.
substrate, only as adhesion relates to the test specimens. The
standard substrate for qualification to this specification is
1.5 The values stated in SI units are to be regarded as the
standard.Thevaluesgiveninbracketsareforinformationonly. portland cement mortar. The standard joint configuration for
qualification to this specification is the bridge joint configura-
2. Referenced Documents
tion as shown in Fig. 1. Users are advised to have adhesion
2
tests performed in the field on the actual substrate to determine
2.1 ASTM Standards:
adhesion performance.
C717 Terminology of Building Seals and Sealants
NOTE 1—Other joint configurations such as beveled bridge joint
application and/or U-joint application in place or in addition to the
1
This specification is under the jurisdiction of ASTM Committee C24 on standard joint configuration may be specified for the test with the applied
Building Seals and Sealants and is the direct responsibility of Subcommittee C24.10
seal sample.
on Specifications, Guides and Practices.
NOTE 2—Other substrates such as EIFS, brick, wood, aluminum,
CurrenteditionapprovedJune1,2016.PublishedJuly2016.Originallyapproved
plastic, metal or other in place or in addition to the standard substrate may
in 2002. Last previous edition approved in 2014 as C1518 - 04 (2014). DOI:
be specified for the test with the applied seal sample.
10.1520/C1518-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5. Classification
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.1 Movement Class—A seal qualifying under this specifi-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM websit
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C1518 − 04 (Reapproved 2014) C1518 − 16
Standard Specification for
1
Precured Elastomeric Silicone Joint Sealants
This standard is issued under the fixed designation C1518; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 Precured elastomeric silicone joint sealants, hereinafter referred to as seal, are manufactured in flat, cured, extruded shapes
and are primarily used to span joint openings in construction. This specification describes the properties of applied, flat shaped
precured elastomeric silicone joint sealants, hereinafter referred to as applied seal, that bridge joint openings and are adhered to
joint substrates utilizing a liquid applied silicone adhesive sealant, specified by the manufacturer, hereinafter referred to as adhesive
to construction substrates, to seal building openings such as panel joints, metal flashing joints, or other building openings in place
of conventional liquid applied sealants.
1.2 Seals are applied in three different configurations:
1.2.1 As a bridge joint, the seal is applied flat on the surface to cover a joint opening. See Fig. 1.
1.2.2 As a beveled bridge joint, the seal is applied on the beveled edge of a substrate to bridge a joint opening. See Fig. 2.
1.2.3 As a U-joint, the seal is applied in a U-configuration within a joint. See Fig. 3.
1.3 This specification is for a flat extruded shape. A three-dimensional shape used at a joint cross section or termination is being
considered for future inclusion in the specification.
1.4 An applied seal meeting the requirements of this specification shall be designated by the manufacturer as to movement class
and tear class as described in Section 5.
1.5 The values stated in SI units are to be regarded as the standard. The values given in brackets are for information only.
2. Referenced Documents
2
2.1 ASTM Standards:
C717 Terminology of Building Seals and Sealants
C1442 Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus
C1523 Test Method for Determining Modulus, Tear and Adhesion Properties of Precured Elastomeric Joint Sealants
D1566 Terminology Relating to Rubber
G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
3. Terminology
3.1 Definitions:
3.1.1 Refer to Terminology C717 for definitions of the following terms used in this specification: standard, including but not
limited to the following: cohesive failure, adhesive failure, elastomeric, elongation, joint, modulus, primer, seal, sealant, shelf-life,
substrate.
3.1.2 Refer to Terminology G113 for definitions related to artificial weathering.
3.1.3 Refer to Terminology D1566 for tear.
4. Significance and Use
4.1 This specification describes several classifications of applied seals as described in Section 5. The purchaser or design
professional shall recognize that not all materials meeting this specification are suitable for all applications and substrates. It is
essential, therefore, that the proper classification of the seal system is provided for the intended use. The test methods in this
1
This specification is under the jurisdiction of ASTM Committee C24 on Building Seals and Sealants and is the direct responsibility of Subcommittee C24.10 on
Specifications, Guides and Practices.
Current edition approved Dec. 1, 2014June 1, 2016. Published December 2014July 2016. Originally approved in 2002. Last previous edition approved in 20092014 as
C1518 - 04 (2009).(2014). DOI: 10.1520/C1518-04R14.10.1520/C1518-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C1518 − 16
FIG. 1 Bridge Joint Configuration
FIG. 2 Beveled Bridge Joint Configuration
FIG. 3 U-Joint Configuration
specification relate to elastomeric performance, adhesion of the adhesive to the seal and adhesion of the adhesive to the substrate,
only as adhesion relates to the test specimens. The standard substrate for qualification to this specification is portland cement
mortar. The standard joint co
...