ASTM E2786-10(2019)
(Test Method)Standard Test Methods for Measuring Expansion of Intumescent Materials Used in Firestop and Joint Systems
Standard Test Methods for Measuring Expansion of Intumescent Materials Used in Firestop and Joint Systems
SIGNIFICANCE AND USE
5.1 These test methods are intended to measure the material’s expansion after heating.
5.2 The test methods also provide a means to determine the expansion factor.
SCOPE
1.1 These test methods determine, by measurement, the expansion of intumescent materials used in firestop and joint systems under specified conditions.
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 The text of these test methods references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the fire test response 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.
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: E2786 − 10 (Reapproved 2019)
Standard Test Methods for
Measuring Expansion of Intumescent Materials Used in
1
Firestop and Joint Systems
This standard is issued under the fixed designation E2786; 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 3.1.1 For definitions of general terms used in these test
methods related to building construction, refer to Terminology
1.1 These test methods determine, by measurement, the
E631.
expansion of intumescent materials used in firestop and joint
3.1.2 For definitions of general terms used in these test
systems under specified conditions.
methods related to fire standards, refer to Terminology E176.
1.2 The values stated in inch-pound units are to be regarded
3.2 Definitions of Terms Specific to This Standard:
as standard. The values given in parentheses are mathematical
3.2.1 expansion, n—an increase in the dimensions as the
conversions to SI units that are provided for information only
result of heating.
and are not considered standard.
3.2.2 expansion factor, n—the ratio of the material height
1.3 The text of these test methods references notes and
before and after heating, under test conditions that allow
footnotes which provide explanatory material. These notes and
expansion only in the vertical direction.
footnotes (excluding those in tables and figures) shall not be
considered as requirements of the fire test response standard.
3.2.3 intumescent, adj—characterized by swelling when ex-
posed to high surface temperatures or flames.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4.1 These test methods place a material of a specified
mine the applicability of regulatory limitations prior to use.
thickness or volume into a specific device that is capable of
1.5 This international standard was developed in accor-
heating the material.
dance with internationally recognized principles on standard-
4.2 After the material is heated, its dimensional or volumet-
ization established in the Decision on Principles for the
ric change is measured.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4.3 Two test methods are provided, one using a test speci-
Barriers to Trade (TBT) Committee.
men holder (Test Method A) and the other using a water
displacement method (Test Method B).
2. Referenced Documents
2
4.4 Test MethodAmay be used for measuring expansion of
2.1 ASTM Standards:
any material.
E176 Terminology of Fire Standards
E631 Terminology of Building Constructions
4.5 Test Method B may be used for measuring expansion of
any material, except for those materials that are granular, that
3. Terminology
are susceptible to absorbing paraffin in conditioned pre-
3.1 Definitions—Definitions in the following standards will
expandedstateorpost-expandedstate,orthataresusceptibleto
prevail for terms not defined in these test methods.
damage or deformation in a post-expanded state.
4.6 The test method used must be reported, as use of
1
These test methods are under the jurisdiction of ASTM Committee E06 on
different test methods will result in different expansion factors.
Performance of Buildings and is the direct responsibility of Subcommittee E06.21
on Serviceability.
5. Significance and Use
Current edition approved Oct. 1, 2019. Published October 2019. Originally
approved in 2010. Last previous edition approved in 2015 as E2786–10 (2015).
5.1 These test methods are intended to measure the materi-
DOI: 10.1520/E2786–10R19.
2
al’s expansion after heating.
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
5.2 The test methods also provide a means to determine the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. expansion factor.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E2786 − 10 (2019)
6. Apparatus 6.3.2 Steel rule die, 1 in. (25 mm) diameter,
6.3.3 Glass beaker, 400 mL smooth wall type,
6.1 Heating Device—An enclosed furnace or oven or simi-
6.3.4 Weight with ho
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.