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ASTM C719-14

(Test Method)

Standard Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)

Standard Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)

SIGNIFICANCE AND USE
5.1 The failure of a building sealant in an active joint is usually manifested by cohesive failure in the sealant or adhesive failure between the sealant and the substrate, or both. The method described in this test method relates only to the performance of the sealant when properly installed with recommended primers, and does not evaluate sealant failures caused by improper joint design, excessive joint movement, improper application practices, and other factors known to cause sealant failure in buildings and building areas.
SCOPE
1.1 This test method is an accelerated laboratory procedure for evaluating the performance of a building sealant in a test configuration that is subjected to water immersion, cyclic movement, and temperature change.3  
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
14-Jul-2014
ICS
91.100.50 - Binders. Sealing materials
Technical Committee
C24 - Building Seals and Sealants
Drafting Committee
C24.30 - Adhesion
Current Stage
Ref Project

Relations

Replaces
ASTM C719-13 - Standard Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)
Effective Date
15-Jul-2014
Referred By
ASTM C1021-08(2023) - Standard Practice for Laboratories Engaged in Testing of Building Sealants
Effective Date
15-Jul-2014
Referred By
ASTM E1399/E1399M-97(2022) - Standard Test Method for Cyclic Movement and Measuring the Minimum and Maximum Joint Widths of Architectural Joint Systems
Effective Date
15-Jul-2014
Referred By
ASTM C712-22 - Standard Test Method for Bubbling of One-Part, Elastomeric, Solvent-Release Type Sealants
Effective Date
15-Jul-2014
Referred By
ASTM C1815-17(2021) - Standard Practice for Periodically Measuring and Monitoring Sealant Dimensions to Stability Following a Period of Compression or Tension
Effective Date
15-Jul-2014
Referred By
ASTM C1635-22 - Standard Test Method to Evaluate Adhesion/Cohesion Properties of a Sealant at Fixed Extension
Effective Date
15-Jul-2014
Referred By
ASTM C1481-12(2017) - Standard Guide for Use of Joint Sealants with Exterior Insulation and Finish Systems (EIFS)
Effective Date
15-Jul-2014
Referred By
ASTM C1851-18(2023) - Standard Practice for Determining the Extent of Cracking in a Sealant using the Difference between the Compressive and Tensile Modulus
Effective Date
15-Jul-2014
Referred By
ASTM C1472-16(2022) - Standard Guide for Calculating Movement and Other Effects When Establishing Sealant Joint Width
Effective Date
15-Jul-2014
Referred By
ASTM C1401-23 - Standard Guide for Structural Sealant Glazing
Effective Date
15-Jul-2014
Referred By
ASTM C1681-23 - Standard Test Method for Evaluating the Tear Resistance of a Sealant Under Constant Strain
Effective Date
15-Jul-2014
Referred By
ASTM C1589/C1589M-18(2023) - Standard Practice for Outdoor Weathering of Construction Seals and Sealants
Effective Date
15-Jul-2014
Referred By
ASTM C1564-20 - Standard Guide for Use of Silicone Sealants for Protective Glazing Systems
Effective Date
15-Jul-2014
Referred By
ASTM C1519-10(2022) - Standard Test Method for Evaluating Durability of Building Construction Sealants by Laboratory Accelerated Weathering Procedures
Effective Date
15-Jul-2014
Referred By
ASTM C1193-16(2023) - Standard Guide for Use of Joint Sealants
Effective Date
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ASTM C719-14 - Standard Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)ASTM C719-14 - Standard Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)
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ASTM C719-14 - Standard Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)
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REDLINE ASTM C719-14 - Standard Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)REDLINE ASTM C719-14 - Standard Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)
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REDLINE ASTM C719-14 - Standard Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)
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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: C719 − 14
Standard Test Method for
Adhesion and Cohesion of Elastomeric Joint Sealants
1,2
Under Cyclic Movement (Hockman Cycle)
This standard is issued under the fixed designation C719; 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 U.S. Department of Defense.
1. Scope 4. Summary of Test Method
1.1 This test method is an accelerated laboratory procedure 4.1 This test method consists of subjecting standard joint
for evaluating the performance of a building sealant in a test specimens to a series of treatments as follows: (a) immersion
configuration that is subjected to water immersion, cyclic inwaterforsevendays;(b)exposureinanovenforsevendays
3
movement, and temperature change. while under compression; (c) automatic compression and
extension cycling at room temperature at a specified rate and
1.2 The values stated in inch-pound units are to be regarded
amount of joint movement; and (d) alternate compression and
as standard. The values given in parentheses are mathematical
extension of the joint at high and low temperatures,
conversions to SI units that are provided for information only
respectively, under specified conditions described herein.
and are not considered standard.
4.2 The effects of the test shall be evaluated by visual
1.3 This standard does not purport to address all of the
inspection for cohesive and adhesive failures, sealant
safety concerns, if any, associated with its use. It is the
deformation, and bubble formation within the sealant.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4.3 This test method is applicable to any joint movement.
bility of regulatory limitations prior to use.
The most common test movements are 612.5 and 625% as
used in the examples.
2. Referenced Documents
5. Significance and Use
4
2.1 ASTM Standards:
5.1 The failure of a building sealant in an active joint is
C33Specification for Concrete Aggregates
usually manifested by cohesive failure in the sealant or
C109/C109MTest Method for Compressive Strength of
adhesive failure between the sealant and the substrate, or both.
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
The method described in this test method relates only to the
Specimens)
performance of the sealant when properly installed with
C150Specification for Portland Cement
recommended primers, and does not evaluate sealant failures
C717Terminology of Building Seals and Sealants
caused by improper joint design, excessive joint movement,
3. Terminology improper application practices, and other factors known to
cause sealant failure in buildings and building areas.
3.1 Definitions—For definitions of terms used in this test
method, refer to Terminology C717.
6. Apparatus
5
6.1 Compression-Extension Machine, designedtoautomati-
cally compress the joint width of the test specimen from 0.500
1
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
Seals and Sealants and is the direct responsibility of Subcommittee C24.30 on in. (12.7 mm) to the minimum dimension desired (Table 1,
Adhesion.
Current edition approved July 15, 2014. Published August 2014. Originally
5
approved in 1972. Last previous edition approved in 2013 as C719–13. DOI: Series 520 Sealing Compound Tester, manufactured by Applied Test Systems
10.1520/C0719-14. Inc.,348NewCastleRd.,Butler,PA16001,andadurabilitytestermanufacturedby
2
This test method is also known as the Hockman Cycle in recognition ofArthur Ambard, Inc., 269-11 81st Ave., New Hyde Park, NY 11040, have been found
Hockman who originated the method at the National Bureau of Standards. suitable for this purpose (Fig. 1(a)). For extension of the joint at cold temperature,
3
Supporting data are available fromASTM International Headquarters. Request the machine may be designed for extension only (Fig. 3).
RR:C24-1013. The sole source of supply of the apparatus known to the committee at this time
4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or is Applied Test Systems Inc. and Ambard Inc. If you are aware of alternative
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM suppliers, please provide this information to ASTM International Headquarters.
Standards volume information, refer to the standard’s Document Summary page on Your comments will receive careful consideration at a meeting of the responsible
1
the ASTM website. technical committee , which you may attend.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C
...

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: C719 − 13 C719 − 14
Standard Test Method for
Adhesion and Cohesion of Elastomeric Joint Sealants
1,2
Under Cyclic Movement (Hockman Cycle)
This standard is issued under the fixed designation C719; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This test method is an accelerated laboratory procedure for evaluating the performance of a building sealant in a test
3
configuration that is subjected to water immersion, cyclic movement, and temperature change.
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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
4
2.1 ASTM Standards:
C33 Specification for Concrete Aggregates
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
C150 Specification for Portland Cement
C717 Terminology of Building Seals and Sealants
3. Terminology
3.1 Definitions—For definitions of terms used in this test method, refer to Terminology C717.
4. Summary of Test Method
4.1 This test method consists of subjecting standard joint specimens to a series of treatments as follows: (a) immersion in water
for seven days; (b) exposure in an oven for seven days while under compression; (c) automatic compression and extension cycling
at room temperature at a specified rate and amount of joint movement; and (d) alternate compression and extension of the joint
at high and low temperatures, respectively, under specified conditions described herein.
4.2 The effects of the test shall be evaluated by visual inspection for cohesive and adhesive failures, sealant deformation, and
bubble formation within the sealant.
4.3 This test method is applicable to any joint movement. The most common test movements are 612.5 and 625 % as used
in the examples.
5. Significance and Use
5.1 The failure of a building sealant in an active joint is usually manifested by cohesive failure in the sealant or adhesive failure
between the sealant and the substrate, or both. The method described in this test method relates only to the performance of the
1
This test method is under the jurisdiction of ASTM Committee C24 on Building Seals and Sealants and is the direct responsibility of Subcommittee C24.30 on Adhesion.
Current edition approved June 15, 2013July 15, 2014. Published July 2013August 2014. Originally approved in 1972. Last previous edition approved in 20102013 as
C719 – 93C719 – 13.(2010). DOI: 10.1520/C0719-13.10.1520/C0719-14.
2
This test method is also known as the Hockman Cycle in recognition of Arthur Hockman who originated the method at the National Bureau of Standards.
3
Supporting data are available from ASTM International Headquarters. Request RR:C24-1013.
4
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 ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C719 − 14
sealant when properly installed with recommended primers, and does not evaluate sealant failures caused by improper joint design,
excessive joint movement, improper application practices, and other factors known to cause sealant failure in buildings and
building areas.
6. Apparatus
5
6.1 Compression-Extension Machine, designed to automatically compress the joint width of the test specimen from 0.500 in.
(12.7 mm) to the minimum dimension desired (Table 1, Column C) and extend the specimen from 0.500 in. to the maximum
1
extension desired (Table 1, Column E) at a constant rate of ⁄8 in./h (3.2 mm/h). The machine shall be equipped with grips of
sufficient strength to withstan
...

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4.4 The design life of a sealant or sealant joint should be considered in conjunction with the design life of the structure for which it is us...
SCOPE
1.1 This guide describes the use of a cold liquid-applied sealant for joint sealing applications. Including joints on buildings and related adjacent areas, such as plazas, decks, and pavements for vehicular or pedestrian use, and types of construction other than highways and airfield pavements and bridges. Information in this guide is primarily applicable to a single and multi-component, cold liquid-applied joint sealant and secondarily to a precured sealant when used with a properly prepared joint opening and substrate surfaces.  
1.2 An elastomeric or non-elastomeric sealant described by this guide should meet the requirements of Specification C834, C920, or C1311.  
1.3 This guide does not provide information or guidelines for the use of a sealant in a structural sealant glazing application. Guide C1401 should be consulted for this information. Additionally, it also does not provide information or guidelines for the use of a sealant in an insulating glass unit edge seal used in a structural sealant glazing application. Guide C1249 should be consulted for this information.  
1.4 Practice C919 should be consulted for information and guidelines for the use of a sealant in an application where an acoustic joint seal is required.  
1.5 This guide also does not provide information relative to the numerous types of sealant that are available nor specific generic sealant properties, such as hardness, tack-free time, or curing process, among others.  
1.6 The values stated in SI units are to be regarded as the standard. The values given in parenthesis are provided for information only.  
1.7 The Committee with jurisdiction for this standard is not aware of any comparable standards published by other organizations.  
1.8 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 e...

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ASTM
ASTM C793-23(Test Method)
Standard Test Method for Effects of Laboratory Accelerated Weathering on Elastomeric Joint Sealants

SIGNIFICANCE AND USE
5.1 It is known that solar radiation contributes to the degradation of sealants in exterior building joints. The use of a laboratory accelerated weathering machine with actinic radiation, moisture and heat appears to be a feasible means to give indications of early degradation by the appearance of sealant cracking. However, simulated weather factors in combination with extension may produce more severe degradation than weather factors only. Therefore, the effect of the weathering test is made more sensitive by the addition of the bending of the specimen at cold temperature.
SCOPE
1.1 This test method covers a laboratory procedure for determining the effects of accelerated weathering on cured-in-place elastomeric joint sealants (single- and multicomponent) for use in building construction.  
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.  
1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other ASTM committees or other organizations.  
1.4 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.  
1.5 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.

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ASTM
ASTM C782-13(2023)(Test Method)
Standard Test Method for Softness of Preformed Tape Sealants

SIGNIFICANCE AND USE
5.1 Preformed tape sealants are tacky, deformable solids that are used under compression between two substrates in a variety of sealing applications. This procedure measures the softness of a preformed tape sealant and gives an indication of the preformed tape sealant's ease of compression during installation. The resistance to penetration may also give an indication of the toughness of the preformed tape sealant.
SCOPE
1.1 This test method describes a laboratory procedure for determining the softness of preformed tape sealants.  
Note 1: Cone penetration methods applicable to greases and to petrolatum are described in Test Methods D217 and D937. Test Method D2451 also uses a penetration technique for determining the degree of set in sash glazing compounds.  
1.2 The values stated in SI units are to be regarded as standard. Temperature values are also provided (in parentheses) in degrees Fahrenheit.  
1.3 The subcommittee with jurisdiction is not aware of any similar ISO standard.  
1.4 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.  
1.5 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.

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