Significance and Use
This practice is useful for producing uniform specimens of refractory plastics and ramming mixes for use in standard ASTM tests. Samples thus formed may be used for referee testing when setting specifications between producer and user. Forming parameters such as sample size, workability, and forming pressure should be agreed upon and specified in the report when referee testing.
This practice is applicable for preparing test specimens of various sizes. Note that 9 by 4½ by 2½ in. (228 by 114 by 64-mm) samples, because of their large cross-section, have a greater tendency to form flaws during pressing, handling, and drying than smaller cross-sectional samples.
Other tests for which these specimens may be used encompass, but are not limited to, the following ASTM standards: Method C 16, Test Methods C 20, Test Method C 113, Test Methods C 133, Test Method C 179, Test Method C 288, Test Method C 417, Test Method C 577, Test Method C 583, Test Method C 704, Test Methods C 830, Test Method C 832, Practice C 874, Test Method C 885, and Test Method C 914.
A purpose of this practice is to minimize flaws in pressed specimens. It is not intended to duplicate all field installation conditions.
Variations in workability as determined by Test Method C 181 can significantly affect the number of flaws contained in a specimen. For comparison testing between two laboratories, the workability level should be established by mutual agreement.
This practice is not intended for preparing specimens of basic ramming mixes, anhydrous tap-hole mixes, nor resin bonded mixes.
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 C 673.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C16 Test Method for Load Testing Refractory Shapes at High Temperatures
C20 Test Methods for Apparent Porosity, Water Absorption, Apparent Specific Gravity, and Bulk Density of Burned Refractory Brick and Shapes by Boiling Water
C113 Test Method for Reheat Change of Refractory Brick
C133 Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories
C179 Test Method for Drying and Firing Linear Change of Refractory Plastic and Ramming Mix Specimens
C181 Test Method for Workability Index of Fireclay and High-Alumina Refractory Plastics
C288 Test Method for Disintegration of Refractories in an Atmosphere of Carbon Monoxide
C417 Test Method for Thermal Conductivity of Unfired Monolithic Refractories
C577 Test Method for Permeability of Refractories
C583 Test Method for Modulus of Rupture of Refractory Materials at Elevated Temperatures
C673 Classification of Fireclay and High-Alumina Plastic Refractories and Ramming Mixes
C704 Test Method for Abrasion Resistance of Refractory Materials at Room Temperature
C830 Test Methods for Apparent Porosity, Liquid Absorption, Apparent Specific Gravity, and Bulk Density of Refractory Shapes by Vacuum Pressure
C832 Test Method of Measuring Thermal Expansion and Creep of Refractories Under Load
C874 Test Method for Rotary Slag Testing of Refractory Materials
C885 Test Method for Youngs Modulus of Refractory Shapes by Sonic Resonance
C914 Test Method for Bulk Density and Volume of Solid Refractories by Wax Immersion
drying; forming; pressing; refractory plastics; refractory ramming mixes; Aluminum-silicate refractory specimens; Chemically-bonded refractory specimens; Drying or curing; Nonchemically-bonded refractory specimens; Pressing; Refractories (alumina); Refractories (plastic); Refractories (ramming mixes);
ICS Number Code 81.080 (Refractories)
ASTM International is a member of CrossRef.
Citing ASTM Standards
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