ASTM E761-92(2000)

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

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 This standard does not purport to address all of the safety problems, 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-Dec-1999
• ICS: 13.220.50 - Fire-resistance of building materials and elements
• Technical Committee: E06 - Performance of Buildings
• Drafting Committee: E06.21 - Serviceability

Relations

• Replaced By: ASTM E761-92(2005) - Standard Test Method for Compressive Strength of Sprayed Fire-Resistive Material Applied to Structural Members
• Effective Date: 01-May-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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An American National Standard
Designation:E761–92 (Reapproved 2000)
Standard Test Method for
Compressive Strength of Sprayed Fire-Resistive Material
Applied to Structural Members
This standard is issued under the fixed designation E 761; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope indication of serviceability. Satisfactory performance of fire-
resistive material applied to structural members and assemblies
1.1 This test method covers a procedure for measuring the
depends upon its ability while in place to withstand the various
compressive strength of sprayed fire-resistive material (SFRM)
influences that may occur during the life of the structure, as
applied to a rigid substrate. These fire-resistive materials
well as upon its satisfactory performance under fire tests.
include sprayed fibrous and cementitious materials applied
4.2 This test method measures the compressive strength of
directly in contact with these structural members. The test
SFRM and is a measure of the resistance to deformation under
method is applicable to laboratory procedure.
a compressive load. It is an indication of the ability of SFRM
1.2 This standard does not purport to address all of the
to remain in place and resist removal during anticipated service
safety concerns, if any, associated with its use. It is the
conditions.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Apparatus
bility of regulatory limitations prior to use.
5.1 Testing Machine— Any form of standard hydraulic or
2. Referenced Documents mechanical compression testing machine accurate to 0.005 kg
(0.01 lb) and 0.25 mm (0.001 in.).
2.1 ASTM Standards:
5.2 Spherical Bearing Block Assembly, having a plane
D 2092 Practice for Preparation of Zinc-Coated (Galva-
bearing surface of 150 mm (6 in.) square. The upper bearing
nized) Steel Surfaces for Painting
shall be a spherically seated, hardened metal block firmly
E 84 Test Method for Surface Burning Characteristics of
attached at the center of the upper head of the machine. The
Building Materials
center of the sphere shall lie at the center of the surface held in
E 119 Test Methods for Fire Tests of Building Construction
its spherical seat, but shall be free to turn in any direction, and
and Materials
its perimeter shall have at least 6-mm ( ⁄4-in.) clearance from
E 605 Test Methods for Thickness and Density of Sprayed
the head to allow for specimens whose bearing surfaces are not
Fire-Resistive Material (SFRM) Applied to Structural
3 exactly parallel (see Fig. 1).
Members
5.3 Drying Oven, capable of maintaining temperature and
3. Summary of Test Method humidity conditions during the specimen curing cycle, in
accordance with the SFRM manufacturers’ published require-
3.1 The compressive strength of SFRM applied to a steel
ments.
sheet is determined by applying a crushing load normal to the
surface of the specimen. This test method measures the stress
6. Materials and Manufacture
at 10 % deformation or at failure, whichever is smaller.
6.1 This test method requires the application of SFRM in
4. Significance and Use
accordance with manufacturers’ published instructions. The
apparatus, materials, and procedures used to apply the SFRM
4.1 The intent of this test method is to determine properties
for this test shall be representative of application in the field.
of direct-applied SFRM that may be used to provide an
6.2 The density of the prepared sample shall be similar to
the density tested and reported during the Test Methods E 119
This test method is under the jurisdiction of ASTM Committee E06 on
and Test Method E 84 fire exposure tests or as required by the
Performance of Buildings and is the direct responsibility of Subcommittee E06.21
sponsor of the test.
on Serviceability.
Current edition approved Sept. 22, 1992. Published November 1992. Originally 6.3 Determine the density and thickness of each of the
published as E 761 – 80. Last previous edition E 761 – 86 (1991).
laboratory-prepared specimens. Report in accordance withTest
Annual Book of ASTM Standards, Vol 06.02.
3 Methods E 605.
Annual Book of ASTM Stan
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