Standard Test Method for Compressive Strength of Sprayed Fire-Resistive Material Applied to Structural Members

SIGNIFICANCE AND USE
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.  
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 SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound 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
31-Mar-2011
Technical Committee
Drafting Committee
Current Stage
Ref Project

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ASTM E761-92(2011) - Standard Test Method for Compressive Strength of Sprayed Fire-Resistive Material Applied to Structural Members
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: E761 − 92 (Reapproved 2011)
StandardTest Method for
Compressive Strength of Sprayed Fire-Resistive Material
Applied to Structural Members
This standard is issued under the fixed designation E761; 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 Department of Defense.
1. Scope 3. Summary of Test Method
3.1 The compressive strength of SFRM applied to a steel
1.1 This test method covers a procedure for measuring the
sheet is determined by applying a crushing load normal to the
compressive strength of sprayed fire-resistive material (SFRM)
surface of the specimen. This test method measures the stress
applied to a rigid substrate. These fire-resistive materials
at 10 % deformation or at failure, whichever is smaller.
include sprayed fibrous and cementitious materials applied
directly in contact with these structural members. The test
4. Significance and Use
method is applicable to laboratory procedure.
4.1 The intent of this test method is to determine properties
1.2 The values stated in SI units are to be regarded as
of direct-applied SFRM that may be used to provide an
standard. The values given in parentheses are mathematical
indication of serviceability. Satisfactory performance of fire-
conversions to inch-pound units that are provided for informa-
resistive material applied to structural members and assemblies
tion only and are not considered standard.
depends upon its ability while in place to withstand the various
influences that may occur during the life of the structure, as
1.3 This standard does not purport to address all of the
well as upon its satisfactory performance under fire tests.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.2 This test method measures the compressive strength of
priate safety and health practices and determine the applica-
SFRM and is a measure of the resistance to deformation under
bility of regulatory limitations prior to use.
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)
3 5.1 Testing Machine—Any form of standard hydraulic or
Steel Surfaces for Painting (Withdrawn 2008)
mechanical compression testing machine accurate to 0.005 kg
E84 Test Method for Surface Burning Characteristics of
(0.01 lb) and 0.25 mm (0.001 in.).
Building Materials
5.2 Spherical Bearing Block Assembly, having a plane
E119 Test Methods for Fire Tests of Building Construction
bearing surface of 150 mm (6 in.) square. The upper bearing
and Materials
shall be a spherically seated, hardened metal block firmly
E605 Test Methods for Thickness and Density of Sprayed
attached at the center of the upper head of the machine. The
Fire-Resistive Material (SFRM) Applied to Structural
center of the sphere shall lie at the center of the surface held in
Members
its spherical seat, but shall be free to turn in any direction, and
its perimeter shall have at least 6-mm ( ⁄4-in.) clearance from
the head to allow for specimens whose bearing surfaces are not
This test method is under the jurisdiction of ASTM Committee E06 on
exactly parallel (see Fig. 1).
Performance of Buildings and is the direct responsibility of Subcommittee E06.21
on Serviceability.
5.3 Drying Oven, capable of maintaining temperature and
Current edition approved April 1, 2011. Published August 2011. Originally
humidity conditions during the specimen curing cycle, in
approved in 1980. Last previous edition approved in 2005 as E761 – 92 (2005).
accordance with the SFRM manufacturers’ published require-
DOI: 10.1520/E0761-92R11.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
ments.
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
6. Materials and Manufacture
the ASTM website.
6.1 This test method requires the application of SFRM in
The last approved version of this historical standard is referenced on
www.astm.org. accordance with manufacturers’ published instructions. The
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E761 − 92 (Reapproved 2011)
polyurethane, epoxy, polyester, or other similar materials. The
top plane of the capping
...

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