ASTM E761/E761M-92(2015)e1
(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 may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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.
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´1
Designation: E761/E761M − 92 (Reapproved 2015)
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.
ε NOTE—Designation was changed to dual and units information was corrected editorially in August 2015.
1. Scope E605/E605M Test Methods for Thickness and Density of
Sprayed Fire-Resistive Material (SFRM) Applied to
1.1 This test method covers a procedure for measuring the
Structural Members
compressive strength of sprayed fire-resistive material (SFRM)
applied to a rigid substrate. These fire-resistive materials
3. Summary of Test Method
include sprayed fibrous and cementitious materials applied
directly in contact with these structural members. The test
3.1 The compressive strength of SFRM applied to a steel
method is applicable to laboratory procedure.
sheet is determined by applying a crushing load normal to the
surface of the specimen. This test method measures the stress
1.2 The values stated in either SI units or inch-pound units
at 10 % deformation or at failure, whichever is smaller.
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
4. Significance and Use
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance
4.1 The intent of this test method is to determine properties
with the standard.
of direct-applied SFRM that may be used to provide an
1.3 This standard does not purport to address all of the
indication of serviceability. Satisfactory performance of fire-
safety concerns, if any, associated with its use. It is the
resistive material applied to structural members and assemblies
responsibility of the user of this standard to establish appro-
depends upon its ability while in place to withstand the various
priate safety and health practices and determine the applica-
influences that may occur during the life of the structure, as
bility of regulatory limitations prior to use.
well as upon its satisfactory performance under fire tests.
4.2 This test method measures the compressive strength of
2. Referenced Documents
2 SFRM and is a measure of the resistance to deformation under
2.1 ASTM Standards:
a compressive load. It is an indication of the ability of SFRM
D2092 Guide for Preparation of Zinc-Coated (Galvanized)
3 to remain in place and resist removal during anticipated service
Steel Surfaces for Painting (Withdrawn 2008)
conditions.
E84 Test Method for Surface Burning Characteristics of
Building Materials
5. Apparatus
E119 Test Methods for Fire Tests of Building Construction
and Materials
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 Aug. 1, 2015. Published August 2015. Originally
shall be a spherically seated, hardened metal block firmly
approved in 1980. Last previous edition approved in 2011 as E761 – 92 (2011).
attached at the center of the upper head of the machine. The
DOI: 10.1520/E0761_E0761M-92R15E01.
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).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´1
E761/E761M − 92 (Reapproved 2015)
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 specimen at
two areas 150 mm [6 in.] square at opposite ends of the
specimen with an appropriate capping material such as
polyurethane, epoxy, polyester, or other similar materials. T
...
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.
´1
Designation: E761 − 92 (Reapproved 2011) E761/E761M − 92 (Reapproved 2015)
Standard Test Method for
Compressive Strength of Sprayed Fire-Resistive Material
Applied to Structural Members
This standard is issued under the fixed designation E761;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.
ε NOTE—Designation was changed to dual and units information was corrected editorially in August 2015.
1. 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 given in
parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered stated
in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the 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
2.1 ASTM Standards:
D2092 Guide for Preparation of Zinc-Coated (Galvanized) Steel Surfaces for Painting (Withdrawn 2008)
E84 Test Method for Surface Burning Characteristics of Building Materials
E119 Test Methods for Fire Tests of Building Construction and Materials
E605E605/E605M Test Methods for Thickness and Density of Sprayed Fire-Resistive Material (SFRM) Applied to Structural
Members
3. Summary of Test Method
3.1 The compressive strength of SFRM applied to a steel sheet is determined by applying a crushing load normal to the surface
of the specimen. This test method measures the stress at 10 % deformation or at failure, whichever is smaller.
4. 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.
This test method is under the jurisdiction of ASTM Committee E06 on Performance of Buildings and is the direct responsibility of Subcommittee E06.21 on
Serviceability.
Current edition approved April 1, 2011Aug. 1, 2015. Published August 2011August 2015. Originally approved in 1980. Last previous edition approved in 20052011 as
E761 – 92 (2005).(2011). DOI: 10.1520/E0761-92R11.10.1520/E0761-92R15E01.
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.
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´1
E761/E761M − 92 (Reapproved 2015)
5. Apparatus
5.1 Testing Machine—Any form of standard hydraulic or mechanical compression testing machine accurate to 0.005 kg
(0.01 lb)[0.01 lb] and 0.25 mm (0.001 in.).[0.001 in.].
5.2 Spherical Bearing Block Assembly, having a plane bearing surface of 150 mm (6 in.)[6 in.] square. The upper bearing shall
be a spherically seated, hardened metal block firmly attached at the center of the upper head of the machine. The center of the
sphere shall lie at the center of the surface held in its spherical seat, but shall be free to turn in any direction, and its perimeter
shall have at least 6-mm ([ ⁄4-in.)-in.] clearance from the head to allow for specimens whose bearing surfaces are not exactly
parallel (see Fig. 1).
5.3 Drying Oven, capable of maintaining temperature and humidity conditions during the specimen curing cycle, in accordance
with the SFRM manufacturers’ pub
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