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ASTM C1054-85(1995)

(Practice)

Standard Practice for Pressing and Drying Refractory Plastic and Ramming Mix Specimens

Standard Practice for Pressing and Drying Refractory Plastic and Ramming Mix Specimens

SCOPE
1.1 This practice covers the pressing and drying of chemically and nonchemically bonded aluminum-silicate and high alumina plastic and ramming mix refractory specimens classified in accordance with Classification C673.
1.2 This standard may involve hazardous materials, operations, and equipment. 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-Dec-1994
ICS
81.080 - Refractories
Technical Committee
C08 - Refractories
Drafting Committee
C08.09 - Monolithics
Current Stage
Ref Project

Relations

Replaced By
ASTM C1054-03 - Standard Practice for Pressing and Drying Refractory Plastic and Ramming Mix Specimens
Effective Date
10-Apr-2003

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ASTM C1054-85(1995) - Standard Practice for Pressing and Drying Refractory Plastic and Ramming Mix SpecimensASTM C1054-85(1995) - Standard Practice for Pressing and Drying Refractory Plastic and Ramming Mix Specimens
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ASTM C1054-85(1995) - Standard Practice for Pressing and Drying Refractory Plastic and Ramming Mix Specimens
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3 pages
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 1054 – 85 (Reapproved 1995)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Practice for
Pressing and Drying Refractory Plastic and Ramming Mix
1
Specimens
This standard is issued under the fixed designation C 1054; 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.
2
1. Scope Materials at Elevated Temperatures
C 673 Classification of Fireclay and High-Alumina Plastic
1.1 This practice covers the pressing and drying of chemi-
2
Refractories and Ramming Mixes
cally and nonchemically bonded aluminum-silicate and high
C 704 Test Method for Abrasion Resistance of Refractory
alumina plastic and ramming mix refractory specimens classi-
2
Materials at Room Temperature
fied in accordance with Classification C 673.
C 830 Test Methods for Apparent Porosity, Liquid Absorp-
1.2 The values stated in inch-pound units are to be regarded
tion, Apparent Specific Gravity, and Bulk Density of
as the standard. The values given in parentheses are for
2
Refractory Shapes by Vacuum Pressure
information only.
C 832 Test Method of Measuring the Thermal Expansion
1.3 This standard does not purport to address all of the
2
and Creep of Refractories Under Load
safety concerns, if any, associated with its use. It is the
C 874 Practice for Rotary Slag Testing of Refractory Mate-
responsibility of the user of this standard to establish appro-
2
rials
priate safety and health practices and determine the applica-
C 885 Test Method for Young’s Modulus of Refractory
bility of regulatory limitations prior to use.
2
Shapes by Sonic Resonance
2. Referenced Documents
C 914 Test Method for Bulk Density and Volume of Solid
2
Refractories by Wax Immersion
2.1 ASTM Standards:
C 16 Test Method of Load Testing Refractory Brick at High
3. Significance and Use
2
Temperatures
3.1 This practice is useful for producing uniform specimens
C 20 Test Methods for Apparent Porosity, Water Absorp-
of refractory plastics and ramming mixes for use in standard
tion, Apparent Specific Gravity, and Bulk Density of
2
ASTM tests. Samples thus formed may be used for referee
Burned Refractory Brick and Shapes by Boiling Water
2
testing when setting specifications between producer and user.
C 113 Test Method for Reheat Change of Refractory Brick
Forming parameters such as sample size, workability, and
C 133 Test Methods for Cold Crushing Strength and Modu-
2
forming pressure should be agreed upon and specified in the
lus of Rupture of Refractories
report when referee testing.
C 179 Test Method for Drying and Firing Linear Change of
2
3.2 This practice is applicable for preparing test specimens
Refractory Plastic and Ramming Mix Specimens
1 1
of various sizes. Note that 9 by 4 ⁄2 by 2 ⁄2 in. (228 by 114 by
C 180 Method of Panel Spalling Testing Fireclay Plastic
3
64-mm) samples, because of their large cross-section, have a
Refractories
greater tendency to form flaws during pressing, handling, and
C 181 Test Method for Workability Index of Fireclay and
2 drying than smaller cross-sectional samples.
High-Alumina Plastic Refractories
3.3 Other tests for which these specimens may be used
C 288 Test Method for Disintegration of Refractories in an
2 encompass, but are not limited to, the following ASTM
Atmosphere of Carbon Monoxide
standards: Method C 16, Test Methods C 20, Test Method
C 417 Test Method for Thermal Conductivity of Unfired
2 C 113, Test Methods C 133, Test Method C 179, Method
Monolithic Refractories
C 180, Test Method C 288, Test Method C 417, Method C 546,
C 546 Method of Load Testing Refractory Brick at High
4 Test Method C 577, Test Method C 583, Test Method C 704,
Temperatures, Long-Time
2
Test Methods C 830, Test Method C 832, Practice C 874, Test
C 577 Test Method for Permeability of Refractories
Method C 885, and Test Method C 914.
C 583 Test Method for Modulus of Rupture of Refractory
3.4 A purpose of this practice is to minimize flaws in
pressed specimens. It is not intended to duplicate all field
1
This practice is under the jurisdiction of ASTM Committee C-8 on Refractories
installation conditions.
and is the direct responsibility of Subcommittee C08.09 on Monolithic Refractories.
3.5 Variations in workability as determined by Test Method
Current edition approved Dec. 27, 1985. Published February 1985.
2
Annual Book of ASTM Standards, Vol 15.01.
C 181 can significantly affect the number of flaws contained in
3
Discontinued. See 1984 Annual Book of ASTM Standards, Vol 15.01.
a specimen. For comparison testing between two laborato
...

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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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SCOPE
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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