ASTM C580-02
(Test Method)Standard Test Method for Flexural Strength and Modulus of Elasticity of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes
Standard Test Method for Flexural Strength and Modulus of Elasticity of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes
SIGNIFICANCE AND USE
This test method is generally applicable to rigid and semirigid materials. Although flexural strength cannot be determined for those materials that do not break, tangent modulus of elasticity can be determined.
The results obtained by this test method should serve as a guide in, but not as the sole basis for, selection of a chemical-resistant material for a particular application. No attempt has been made to incorporate into this test method all the various factors that may affect the performance of a material when subjected to actual service.
In addition to the tangent modulus of elasticity, a secant modulus is calculated at the point on the stress-strain (load-deflection) graph where the strain is 50 % of the maximum strain.
SCOPE
1.1 This test method covers the determination of flexural strength and modulus of elasticity in flexure of cured chemical-resistant materials in the form of molded rectangular beams. These materials include mortars, brick and tile grouts, structural grouts, machinery grouts, monolithic surfacings (60 mils or greater), and polymer concretes. These materials shall be based on resin, silicate, silica, or sulfur binders.
1.2 A bar of rectangular cross section is tested in flexure as a simple beam in center point loading: the bar rests on two supports and the load is applied by means of a loading nose midway between supports.
1.3 Method A outlines the testing procedure generally used for systems containing aggregate less than 0.2 in. (5 mm) in size. Method B covers the testing procedure generally used for systems containing aggregate from 0.2 to 0.4 in. (10 mm) in size. Method C is used for systems containing aggregate larger than 0.4 in.
1.4 The values stated in inch-pound units are to be regarded as standard. Within this text, the SI units shown in parentheses are provided for information only.
1.5 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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Designation:C580–02
Standard Test Method for
Flexural Strength and Modulus of Elasticity of Chemical-
Resistant Mortars, Grouts, Monolithic Surfacings, and
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Polymer Concretes
This standard is issued under the fixed designation C 580; 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.
This standard has been approved for use by agencies of the Department of Defense.
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1. Scope E 4 Practices for Force Verification of Testing Machines
1.1 This test method covers the determination of flexural
3. Terminology
strengthandmodulusofelasticityinflexureofcuredchemical-
3.1 Definitions—For definitions of terms used in this test
resistant materials in the form of molded rectangular beams.
method, see Terminology C 904.
These materials include mortars, brick and tile grouts, struc-
tural grouts, machinery grouts, monolithic surfacings (60 mils
4. Significance and Use
or greater), and polymer concretes. These materials shall be
4.1 This test method is generally applicable to rigid and
based on resin, silicate, silica, or sulfur binders.
semirigid materials. Although flexural strength cannot be
1.2 A bar of rectangular cross section is tested in flexure as
determined for those materials that do not break, tangent
a simple beam in center point loading: the bar rests on two
modulus of elasticity can be determined.
supports and the load is applied by means of a loading nose
4.2 The results obtained by this test method should serve as
midway between supports.
a guide in, but not as the sole basis for, selection of a
1.3 Method A outlines the testing procedure generally used
chemical-resistant material for a particular application. No
for systems containing aggregate less than 0.2 in. (5 mm) in
attempt has been made to incorporate into this test method all
size. Method B covers the testing procedure generally used for
the various factors that may affect the performance of a
systems containing aggregate from 0.2 to 0.4 in. (10 mm) in
material when subjected to actual service.
size. Method C is used for systems containing aggregate larger
4.3 In addition to the tangent modulus of elasticity, a secant
than 0.4 in.
modulus is calculated at the point on the stress-strain (load-
1.4 The values stated in inch-pound units are to be regarded
deflection) graph where the strain is 50 % of the maximum
as standard. Within this text, the SI units shown in parentheses
strain.
are provided for information only.
1.5 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
5.1 Weighing Equipment, shall be capable of weighing
responsibility of the user of this standard to establish appro-
materials or specimens to 60.3 % accuracy.
priate safety and health practices and determine the applica-
5.2 Equipment for Mixing Materials, shall consist of a
bility of regulatory limitations prior to use.
container of suitable size, preferably corrosion-resistant, a
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spatula, trowel, or mechanical mixer, and a ⁄8 in. diameter rod
2. Referenced Documents
with a rounded end, for use in casting specimens.
2.1 ASTM Standards:
5.3 Specimen Molds:
C 904 Terminology Relating to Chemical Resistant Nonme-
2 5.3.1 Method A—Molds to permit the casting of bars 1 6
tallic Materials
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⁄16 in. (25 6 1 mm) square by 10 in. (250 mm) minimum
C 1312 Practice for Making and Conditioning Chemical-
length.
Resistant Sulfur Polymer Cement Concrete Test Speci-
2 5.3.1.1 For sulfur mortars, the following additional equip-
mens in the Laboratory
ment is required:
(a) Cover Plate, of a size sufficient to enclose the open side
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of the bar mold. The base plate from another similar bar mold
This test method is under the jurisdiction of ASTM Committee C03 on
Chemical-Resistant Nonmetallic Materials and is the direct responsibility of has been found to be acceptable.
Subcommittee C03.01 on Test Methods.
Current edition approved Oct. 10, 2002. Published December 2002. Originally
published as C 580 – 65T. Last previous edition C 580 – 98.
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C580–02
(b) C-Clamp, large enough to fasten the cover plate 6.3.2 Sulfur Mortars—The material shall be maintained at
securely over the bar mold. 275 6 15°F. The temperature of the molds and the ambient
temperature of the mixing area shall be 73 6 4°F (23 6 2°C).
(c) Melting Chamber, of sufficient volume and heat capac-
ity to melt t
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