ASTM C975-87(2015)
(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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: C975 − 87 (Reapproved 2015)
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 3.3 Steel Molds.
1.1 This practice covers a procedure for preparing test
3.4 Oven, air circulating.
specimens from basic refractory ramming products by pressing
3.5 Trowel.
preparedmaterialinamold.Specimenspreparedinaccordance
with this procedure are intended for use inASTM test methods.
4. Procedure
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical 4.1 Store the material to be tested at 85 6 2°F (29.5 6 1°C)
conversions to SI units that are provided for information only for 24 h prior to testing.
and are not considered standard.
4.2 Reduce the sample to the desired batch size with a
1.3 This standard does not purport to address all of the
sample splitter or by quartering taking precautions to prevent
safety concerns, if any, associated with its use. It is the
segregation. Sufficient material should be batched to provide at
responsibility of the user of this standard to establish appro-
least a 10 % excess over test specimen requirements.
priate safety and health practices and determine the applica-
4.3 Add the weighed, dry batch to the mixer and dry-mix at
bility of regulatory limitations prior to use.
low speed for 30 s. Continue to mix at low speed while adding
2. Significance and Use
the required amount of water (see 4.3.1) within 30 s. Wet-mix
2.1 This practice defines a procedure that ensures consistent
at low speed for 3 min.
preparation of specimens for product testing and evaluation.
4.3.1 Use the amount of water and mixing time (if different
from above) recommended by the manufacturer. The water
2.2 This practice can be used in the laboratories of
producers, users, and general-interest parties for research and must be potable and at a temperature of 85 6 2°F (29.5 6
1°C). Measure the water addition to the nearest 0.1 % by
development or quality-control work. It is particularly useful
for interlaboratory comparisons of products, for repetitive weight.
evaluations or comparisons of products or product quality, and
4.4 Specimens of the desired size should be pressed imme-
in specifying a uniform preparation practice for specimens for
diately after the batch is mixed. Weigh the proper amount of
acceptance testing.
material for each specimen to the near
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C975 − 87 (Reapproved 2009) C975 − 87 (Reapproved 2015)
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
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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. 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.
3. Apparatus
3.1 Mixer, bench-type, Hobart or equivalent.
3.2 Press, mechanical or hydraulic.
3.3 Steel Molds.
3.4 Oven, air circulating.
3.5 Trowel.
4. Procedure
4.1 Store the material to be tested at 85 6 2°F (29.5 6 1°C) for 24 h prior to testing.
4.2 Reduce the sample to the desired batch size with a sample splitter or by quartering taking precautions to prevent segregation.
Sufficient material should be batched to provide at least a 10 % excess over test specimen requirements.
4.3 Add the weighed, dry batch to the mixer and dry-mix at low speed for 30 s. Continue to mix at low speed while adding the
required amount of water (see 4.3.1) within 30 s. Wet-mix at low speed for 3 m
...
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