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ASTM C179-04

(Test Method)

Standard Test Method for Drying and Firing Linear Change of Refractory Plastic and Ramming Mix Specimens

Standard Test Method for Drying and Firing Linear Change of Refractory Plastic and Ramming Mix Specimens

SIGNIFICANCE AND USE
This test method is useful in quantitatively rating or ranking both ramming and plastic refractories by their linear stability after heating.  
This test method is also useful for determining whether a ramming or plastic refractory can be used in a specified application based on linear change criteria.  
This test method excludes basic and carbon bearing materials.  
This test method can produce data for the engineering and design of refractory installations. The linear change data can be used to determine the number of joints necessary to maintain integrity of ramming or plastic refractory in a large installation.
SCOPE
1.1 This test method covers the determination of the drying shrinkage and of the combined drying and linear change of ramming and plastic refractories.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are provided for information only.  
1.3  This standard does not purport to address all of the safety problems 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-Aug-2004
ICS
81.080 - Refractories
Technical Committee
C08 - Refractories
Drafting Committee
C08.09 - Monolithics
Current Stage
Ref Project

Relations

Replaces
ASTM C179-85(1999)e1 - Standard Test Method for Drying and Firing Linear Change of Refractory Plastic and Ramming Mix Specimens
Effective Date
01-Sep-2004
Replaced By
ASTM C179-09 - Standard Test Method for Drying and Firing Linear Change of Refractory Plastic and Ramming Mix Specimens
Effective Date
01-Sep-2009
Referred By
ASTM C113-14(2019) - Standard Test Method for Reheat Change of Refractory Brick
Effective Date
01-Sep-2004
Referred By
ASTM C704/C704M-15(2022)e1 - Standard Test Method for Abrasion Resistance of Refractory Materials at Room Temperature
Effective Date
01-Sep-2004
Referred By
ASTM C1054-18 - Standard Practice for Pressing and Drying Refractory Plastic and Ramming Mix Specimens
Effective Date
01-Sep-2004
Referred By
ASTM C1419-14(2020) - Standard Test Method for Sonic Velocity in Refractory Materials at Room Temperature and Its Use in Obtaining an Approximate Young's Modulus
Effective Date
01-Sep-2004

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ASTM C179-04 - Standard Test Method for Drying and Firing Linear Change of Refractory Plastic and Ramming Mix SpecimensASTM C179-04 - Standard Test Method for Drying and Firing Linear Change of Refractory Plastic and Ramming Mix Specimens
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ASTM C179-04 - Standard Test Method for Drying and Firing Linear Change of Refractory Plastic and Ramming Mix Specimens
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Standards Content (Sample)

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:C 179–04
Standard Test Method for
Drying and Firing Linear Change of Refractory Plastic and
1
Ramming Mix Specimens
This standard is issued under the fixed designation C 179; 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 3.4 This test method can produce data for the engineering
and design of refractory installations. The linear change data
1.1 This test method covers the determination of the drying
can be used to determine the number of joints necessary to
shrinkage and of the combined drying and linear change of
maintain integrity of ramming or plastic refractory in a large
ramming and plastic refractories.
installation.
1.2 The values stated in inch-pound units are to be regarded
as the standard. The values in parentheses are provided for
4. Apparatus
information only.
4.1 Kiln, electric or gas type, of such design that the flame,
1.3 This standard does not purport to address all of the
as coming directly from the burner, cannot impinge upon the
safety concerns, if any, associated with its use. It is the
test specimens.
responsibility of the user of this standard to establish appro-
3
4.2 Measuring Device , a 12-in. (305-mm), graduated in
priate safety and health practices and determine the applica-
0.02-in. (0.5-mm) increments. A hooked rule is convenient to
bility of regulatory limitations prior to use.
use, and a suitable type is described in Test Methods C 134.
2. Referenced Documents
5. Test Specimens
2
2.1 ASTM Standards:
5.1 Number of Specimens—A minimum of six specimens
C 113 Test Method for Reheat Change of Refractory Brick
molded from the sample (see Note 1) of plastic refractory will
C 134 Test Methods for Size, Dimensional Measurements,
berequired.Halfofthespecimensshallbeusedforthetestand
and Bulk Density of Refractory Brick and Insulating
the other half used as supporting pieces during the kiln heat
Firebrick
treatment.
C 181 Test Method for Workability Index of Fireclay and
High-Alumina Plastic Refractories
NOTE 1—For pressing and drying the specimens see Practice C 1054.
C 1054 Practice for Pressing and Drying Refractory Plastic
5.2 Measurement of Specimens—Using the measuring de-
and Ramming Mix Specimens
vice, measure the bar for all dimensions to the nearest 0.02-in.
(0.5-mm). Label and make reference marks to indicate the
3. Significance and Use
exact length measurement points. Caution should be taken as
3.1 This test method is useful in quantitatively rating or
deformation of the specimens may be caused by handling.
ranking both ramming and plastic refractories by their linear
5.3 Drying of Specimens—Dry specimens should be dried
stability after heating.
as stated in Practice C 1054, 6.6.
3.2 This test method is also useful for determining whether
5.4 Measuring Dried Specimens—Measure specimens as
a ramming or plastic refractory can be used in a specified
stated in 5.2.
application based on linear change criteria.
3.3 This test method excludes basic and carbon bearing
6. Procedure
materials.
6.1 Placing Specimens in Kiln—Place the dried specimens
in the kiln in accordance with Test Method C 113, with the
1
This test method is under the jurisdiction of ASTM Committee C08 on
exception that the supporting brick shall consist of the three
Refractories and is the direct resp
...

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3.1 The oxidation of silicon carbide refractories at elevated temperatures is an important consideration in the application of these refractories. The product of oxidation is amorphous silica or cristobalite, depending upon the temperature at which oxidation takes place. This oxide formation is associated with expansion and degradation of strength. The quantity of water vapor in the atmosphere greatly affects the rate of oxidation.  
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1.1 This test method covers the evaluation of the oxidation resistance of silicon carbide refractories at elevated temperatures in an atmosphere of steam. The steam is used to accelerate the test. Oxidation resistance is the ability of the silicon carbide (SiC) in the refractory to resist conversion to silicon dioxide (SiO2) and its attendant crystalline growth.  
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