ASTM E761/E761M-92(2023)
(Test Method)Standard Test Method for Compressive Strength of Sprayed Fire-Resistive Material Applied to Structural Members
Standard Test Method for Compressive Strength of Sprayed Fire-Resistive Material Applied to Structural Members
SIGNIFICANCE AND USE
4.1 The intent of this test method is to determine properties of direct-applied SFRM that may be used to provide an indication of serviceability. Satisfactory performance of fire-resistive material applied to structural members and assemblies depends upon its ability while in place to withstand the various influences that may occur during the life of the structure, as well as upon its satisfactory performance under fire tests.
4.2 This test method measures the compressive strength of SFRM and is a measure of the resistance to deformation under a compressive load. It is an indication of the ability of SFRM to remain in place and resist removal during anticipated service conditions.
SCOPE
1.1 This test method covers a procedure for measuring the compressive strength of sprayed fire-resistive material (SFRM) applied to a rigid substrate. These fire-resistive materials include sprayed fibrous and cementitious materials applied directly in contact with these structural members. The test method is applicable to laboratory procedure.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
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: E761/E761M − 92 (Reapproved 2023)
Standard Test Method for
Compressive Strength of Sprayed Fire-Resistive Material
Applied to Structural Members
This standard is issued under the fixed designation E761/E761M; 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 E84 Test Method for Surface Burning Characteristics of
Building Materials
1.1 This test method covers a procedure for measuring the
E119 Test Methods for Fire Tests of Building Construction
compressive strength of sprayed fire-resistive material (SFRM)
and Materials
applied to a rigid substrate. These fire-resistive materials
E605/E605M Test Methods for Thickness and Density of
include sprayed fibrous and cementitious materials applied
Sprayed Fire-Resistive Material (SFRM) Applied to
directly in contact with these structural members. The test
Structural Members
method is applicable to laboratory procedure.
1.2 The values stated in either SI units or inch-pound units 3. Summary of Test Method
are to be regarded separately as standard. The values stated in
3.1 The compressive strength of SFRM applied to a steel
each system are not necessarily exact equivalents; therefore, to
sheet is determined by applying a crushing load normal to the
ensure conformance with the standard, each system shall be
surface of the specimen. This test method measures the stress
used independently of the other, and values from the two
at 10 % deformation or at failure, whichever is smaller.
systems shall not be combined.
4. Significance and Use
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 4.1 The intent of this test method is to determine properties
responsibility of the user of this standard to establish appro- of direct-applied SFRM that may be used to provide an
priate safety, health, and environmental practices and deter- indication of serviceability. Satisfactory performance of fire-
mine the applicability of regulatory limitations prior to use. resistive material applied to structural members and assemblies
1.4 This international standard was developed in accor- depends upon its ability while in place to withstand the various
dance with internationally recognized principles on standard- influences that may occur during the life of the structure, as
ization established in the Decision on Principles for the
well as upon its satisfactory performance under fire tests.
Development of International Standards, Guides and Recom-
4.2 This test method measures the compressive strength of
mendations issued by the World Trade Organization Technical
SFRM and is a measure of the resistance to deformation under
Barriers to Trade (TBT) Committee.
a compressive load. It is an indication of the ability of SFRM
to remain in place and resist removal during anticipated service
2. Referenced Documents
conditions.
2.1 ASTM Standards:
5. Apparatus
D2092 Guide for Preparation of Zinc-Coated (Galvanized)
Steel Surfaces for Painting (Withdrawn 2008)
5.1 Testing Machine—Any form of standard hydraulic or
mechanical compression testing machine accurate to 0.005 kg
[0.01 lb] and 0.25 mm [0.001 in.].
This test method is under the jurisdiction of ASTM Committee E06 on
5.2 Spherical Bearing Block Assembly, having a plane
Performance of Buildings and is the direct responsibility of Subcommittee E06.21
on Serviceability.
bearing surface of 150 mm [6 in.] square. The upper bearing
Current edition approved May 15, 2023. Published May 2023. Originally
shall be a spherically seated, hardened metal block firmly
approved in 1980. Last previous edition approved in 2020 as E761/
attached at the center of the upper head of the machine. The
E761M – 92 (2020). DOI: 10.1520/E0761_E0761M-92R23.
center of the sphere shall lie at the center of the surface held in
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
its spherical seat, but shall be free to turn in any direction, and
Standards volume information, refer to the standard’s Document Summary page on
its perimeter shall have at least 6 mm [ ⁄4 in.] clearance from
the ASTM website.
the head to allow for specimens whose bearing surfaces are not
The last approved version of this historical standard is referenced on
www.astm.org. exactly parallel (see Fig. 1).
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E761/E761M − 92 (2023)
7.4 Testing may be performed after it has been determined
that the specimen has reached constant weight.
7.5 Where necessary, even the surface of the
...
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