ASTM C1054-18

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Designation: C1054 − 13 C1054 − 18
Standard Practice for
Pressing and Drying Refractory Plastic and Ramming Mix
Specimens
This standard is issued under the fixed designation C1054; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice covers the pressing and drying of chemically and non-chemically bonded alumin-silicate and high alumina
high-alumina plastic and ramming mix refractory specimens classified in accordance with Classification C673.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
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
C673 Classification of Fireclay and High-Alumina Plastic Refractories and Ramming Mixes
3. Significance and Use
3.1 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. Establish by
mutual agreement and specify in the report the forming parameters such as sample size, workability, and forming pressure when
referee testing.
1 1
3.2 This practice is applicable for preparing test specimens of various sizes. Note that 9 by 4 ⁄2 by 2 ⁄2 in. -in. (228 by 114 by
64-mm) samples, because of their large cross-section, cross section, have a greater tendency to form flaws during pressing,
handling, and drying than smaller cross-sectional samples.
3.3 The purpose of this practice is to minimize flaws in pressed specimens. It is not intended to duplicate all field installation
conditions.
3.4 Variations in workability as determined by Test Method C181 can significantly affect the number of flaws contained in a
specimen. Establish by mutual agreement the workability level when comparing tests between two laboratories.
3.5 This practice is not intended for preparing specimens of basic ramming mixes, anhydrous tap-hole mixes, nor resin bonded
resin-bonded mixes.
4. Apparatus
4.1 Power Press, preferably of the hydraulic type, equipped with suitable molds for forming specimens of the required size
(Note 1) and capable of pressing to a minimum of 1500 psi (10.34 MPa) pressure when forming the largest cross-sectional area
specimen.
This practice is under the jurisdiction of ASTM Committee C08 on Refractories and is the direct responsibility of Subcommittee C08.09 on Monolithics.
Current edition approved April 1, 2013Oct. 1, 2018. Published June 2013November 2018. Originally approved in 1985. Last previous edition approved in 20082013 as
C1054 – 03 (2008).C1054 – 13. DOI: 10.1520/C1054-13.10.1520/C1054-18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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C1054 − 18
NOTE 1—It may be advisable to have the molds slightly oversized so that, after drying, the specimens will be close to the required size for the specific
test.
4.2 Drying Oven, preferably forced-draft forced draft rather than natural convection, capable of maintaining 230°F
(110°C)230 °F (110 °C) with a capacity to hold the specimens.
4.3 Balance, with sufficient capacity to measure specimens with sensitivity of 0.02 lb (9 g).
4.4 Thermometer, with a range of 0°0 to 180 6 0.1°F (–18°0.1 °F (–18 to 80°C80 6 0.05°C).0.05 °C).
4.5 Linear Measuring Device, capable of being read to 0.02-in. (0.5-mm) .0.02 in. (0.5 mm).
4.6 Mold Lubricant—Either paraffin or silicone-based oils can be used as a parting agent for coating mold and die surfaces.
4.7 Two Non-Porous Blocks, approximately ⁄2-in. (13-mm) in. (13 mm) thick. The cross-sectional dimensions of these pieces
will vary, depending on the side dimensions of the bar being pressed.
5. Sampling
5.1 Keep the container or package unopened until testing to ensure the sample does not dry out.
5.2 The ideal sample test temperature is between 65 and 75°F75 °F (18 and 24°C).24 °C). Measure the temperature by inserting
the full length of the thermometer stem into the thermometer probe into the center of the material. Note and record temperature
when the reading is constant.
6. Procedure
6.1 Workability Index Measurement (Note 2)—Determine and report workability of plastics at the time of pressing in accordance
with the procedure described in Test Method C181 (Note 3).
NOTE 2—A workability index between 17 and 23 is the optimum range for pressing samplesspecimens with a minimum amount of flaws. If higher
workability material is used in referee tests between two or more laboratories, the workability should be the same, (63 %),same (63 %) for the material
being tested.
NOTE 3—Since no suitable standard test exists for gaging the workability of ramming mixes, participants in a referee test should agree that samples
of similar formability are being tested.
6.2 Fill
...