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ASTM C975-87(2020)

(Practice)

Standard Practice for Preparing Test Specimens from Basic Refractory Ramming Products by Pressing

Standard Practice for Preparing Test Specimens from Basic Refractory Ramming Products by Pressing

SIGNIFICANCE AND USE
2.1 This practice defines a procedure that ensures consistent preparation of specimens for product testing and evaluation.  
2.2 This practice can be used in the laboratories of producers, users, and general-interest parties for research and development or quality-control work. It is particularly useful for interlaboratory comparisons of products, for repetitive evaluations or comparisons of products or product quality, and in specifying a uniform preparation practice for specimens for acceptance testing.  
2.3 In using this practice it must be recognized that the structure of laboratory-pressed specimens may differ significantly from the structure of material rammed in field applications.
SCOPE
1.1 This practice covers a procedure for preparing test specimens from basic refractory ramming products by pressing prepared material in a mold. Specimens prepared in accordance with this procedure are intended for use in ASTM test methods.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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, health, and environmental 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.

General Information

Status
Published
Publication Date
31-Oct-2020
ICS
81.080 - Refractories
Technical Committee
C08 - Refractories
Drafting Committee
C08.09 - Monolithics
Current Stage
Ref Project

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ASTM C975-87(2020) - Standard Practice for Preparing Test Specimens from Basic Refractory Ramming Products by PressingASTM C975-87(2020) - Standard Practice for Preparing Test Specimens from Basic Refractory Ramming Products by Pressing
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ASTM C975-87(2020) - Standard Practice for Preparing Test Specimens from Basic Refractory Ramming Products by Pressing
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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.
Designation: C975 − 87 (Reapproved 2020)
Standard Practice for
Preparing Test Specimens from Basic Refractory Ramming
1
Products by Pressing
This standard is issued under the fixed designation C975; 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 3. Apparatus
1.1 This practice covers a procedure for preparing test
3.1 Mixer, bench-type, Hobart or equivalent.
specimens from basic refractory ramming products by pressing
3.2 Press, mechanical or hydraulic.
preparedmaterialinamold.Specimenspreparedinaccordance
3.3 Steel Molds.
with this procedure are intended for use inASTM test methods.
1.2 The values stated in inch-pound units are to be regarded
3.4 Oven, air circulating.
as standard. The values given in parentheses are mathematical
3.5 Trowel.
conversions to SI units that are provided for information only
and are not considered standard.
4. Procedure
1.3 This standard does not purport to address all of the
4.1 Store the material to be tested at 85 6 2 °F (29.5 6
safety concerns, if any, associated with its use. It is the
1 °C) for 24 h prior to testing.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4.2 Reduce the sample to the desired batch size with a
mine the applicability of regulatory limitations prior to use.
sample splitter or by quartering, taking precautions to prevent
1.4 This international standard was developed in accor-
segregation. Sufficient material should be batched to provide at
dance with internationally recognized principles on standard-
least a 10 % excess over test specimen requirements.
ization established in the Decision on Principles for the
4.3 Add the weighed, dry batch to the mixer and dry-mix at
Development of International Standards, Guides and Recom-
low speed for 30 s. Continue to mix at low speed while adding
mendations issued by the World Trade Organization Technical
the required amount of water (see 4.3.1) within 30 s. Wet-mix
Barriers to Trade (TBT) Committee.
at low speed for 3 min.
4.3.1 Use the amount of water and mixing time (if different
2. Significance and Use
from above) recommended by the manufacturer. The water
2.1 This practice defines a procedure that ensures consistent
must be potable and at a temperature of 85 6 2 °F (29.5 6
preparation of specimens for product testing and evaluation.
1 °C). Measure the water addition to the nearest 0.1 % by
2.2 This practice can be used in the laboratories of
weight.
producers, users, and general-interest parties for research and
4.4 Specimens of the desired size should be pressed imme-
development or quality-c
...

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