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ASTM C182-88(2009)

(Test Method)

Standard Test Method for Thermal Conductivity of Insulating Firebrick

Standard Test Method for Thermal Conductivity of Insulating Firebrick

SIGNIFICANCE AND USE
The thermal conductivity of insulating firebrick (IFB) is a property required for the selection of IFB for a specific thermal performance. Users select brick to provide a specified heat-loss and cold-face temperature without exceeding the temperature limitation of the brick. This test method establishes placement of thermocouples and the positioning of test samples in the calorimeter. This test method must be used with Test Method C 201.
SCOPE
1.1 This test method supplements Test Method C 201, and shall be used in conjunction with that test method to determine the thermal conductivity of insulating firebrick.  
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 problems, 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.

General Information

Status
Historical
Publication Date
28-Feb-2009
ICS
81.080 - Refractories
Technical Committee
C08 - Refractories
Drafting Committee
C08.02 - Thermal Properties
Current Stage
Ref Project

Relations

Replaces
ASTM C182-88(2004) - Standard Test Method for Thermal Conductivity of Insulating Firebrick
Effective Date
01-Mar-2009
Replaced By
ASTM C182-88(2013) - Standard Test Method for Thermal Conductivity of Insulating Firebrick
Effective Date
01-Sep-2013
Referred By
ASTM C417-21 - Standard Test Method for Thermal Conductivity of Unfired Monolithic Refractories
Effective Date
01-Mar-2009
Referred By
ASTM C201-93(2019)e1 - Standard Test Method for Thermal Conductivity of Refractories
Effective Date
01-Mar-2009
Referred By
ASTM C202-19 - Standard Test Method for Thermal Conductivity of Refractory Brick
Effective Date
01-Mar-2009
Referred By
ASTM C1470-20 - Standard Guide for Testing the Thermal Properties of Advanced Ceramics
Effective Date
01-Mar-2009

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ASTM C182-88(2009) - Standard Test Method for Thermal Conductivity of Insulating Firebrick
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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: C182 − 88 (Reapproved2009)
Standard Test Method for
Thermal Conductivity of Insulating Firebrick
This standard is issued under the fixed designation C182; 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 thermocouples, drilling jig, and refractory fiber paper as
described in Sections 6 and 7.
1.1 This test method supplements Test Method C201, and
shall be used in conjunction with that test method to determine
5. Test Sample
the thermal conductivity of insulating firebrick.
5.1 The test sample shall be selected and prepared as
1.2 The values stated in inch-pound units are to be regarded
described in the Test Sample and Preparation section of Test
as standard. The values given in parentheses are mathematical
Method C201.
conversions to SI units that are provided for information only
and are not considered standard.
6. Installation of Thermocouples in Test Specimen
1.3 This standard does not purport to address all of the
6.1 Thermocouples—Calibrated thermocouples shall be
safety problems, if any, associated with its use. It is the
embeddedinthetestspecimenatthreepointsformeasuringthe
responsibility of the user of this standard to establish appro-
temperature. Chromel-Alumel thermocouples shall be used for
priate safety and health practices and determine the applica-
temperatures below 1400°F (760°C), and above that tempera-
bility of regulatory limitations prior to use.
ture platinum-10 % rhodium/platinum thermocouples shall be
used. The platinum thermocouples may also be used at the
2. Referenced Documents
lower temperatures, but the electromotive force (emf) will not
2.1 ASTM Standards:
be as high as when using base-metal thermocouples. Wire of
C155 Classification of Insulating Firebrick
AWG 28 (0.320 mm) shall be used for making either type of
C201 Test Method for Thermal Conductivity of Refractories
thermocouple.
E220 Test Method for Calibration of Thermocouples By
6.2 Installation of Thermocouples— Holes for the thermo-
Comparison Techniques
couple wires shall be drilled through the 4 ⁄2-in. (114-mm)
3. Significance and Use dimension of the test specimen by the use of a drilling jig so as
to obtain accurate placement of the thermocouples. The three
3.1 The thermal conductivity of insulating firebrick (IFB) is
thermocouples shall be located so that the hot junction of the
a property required for the selection of IFB for a specific
first couple is 0.20 in. (5.1 mm) below the hot face of the test
thermal performance. Users select brick to provide a specified
specimen, the junction of the second at the midpoint, and the
heat-loss and cold-face temperature without exceeding the
junction of the third 0.20 in. above the cold face. The
temperature limitation of the brick. This test method estab-
thermocouple wires leading out from the hot junctions shall be
lishes placement of thermocouples and the positioning of test
located in planes parallel to the calorimeter surface. In order to
samples in the calorimeter. This test method must be used with
have the hot junctions over the center of the calorimeter, they
Test Method C201.
shall be located on an axis passing through the center of and at
4. Apparatus rightanglestothe9by4 ⁄2-in.(228by114-mm)areaofthetest
specimen.
4.1 The apparatus shall consist of that described in the
Apparatus section of Test Method C201 with the addition of NOTE 1—Insulating firebrick that cannot be prepared to this precision
because of the structure of the product, should be prepared in accordance
with the instructions for fireclay dense refractories.
This test method is under the jurisdiction of ASTM Committee C08 on
Refractories and is the direct responsibility of Subcommittee C08.02 on Thermal
7. Set-Up of Test Sample and Silicon Carbide Slab
Properties.
1 1
Current edition approved March 1, 2009. Published April 2009. Originally
7.1 Two strips of refractory fiber paper 13 ⁄2 by ⁄2 by 0.02
approved in 1943. Last previous edition approved in 2004 as C182 – 88 (2004).
in. (343 by 13 by 0.5 mm) shall be placed along the 13 ⁄2-in.
DOI: 10.1520/C0182-88R09.
dimension of the inner guard at the outside edges, as shown in
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. Method E220 specifies calibration procedures for thermocouples.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C182 − 88 (2009)
Fig. 1. Twelve strips of refractory fiber paper 2 by ⁄2 by 0.02 Group 30 or 32 (see Classification C155) insulating firebrick
in. (51 by 13 by 0.5 mm) shall be placed on the outer guard at cut to measure ⁄8 in. (10 mm) square and 1.00 in. (25.4 mm)
intervals in the pattern shown in Fig. 1. These strips serve as in length.
spacers to prevent contact between the test material and the
calorimeter assembly. The test specimen shall be placed
8. Procedure
centrally over the center of the calorimeter section on its 9 by
8.1 Place the heating chamber in position, start the water
4 ⁄2-in. (228 by 114-mm) face, the guard brick placed at the
flowing through the calorimeter assembly, and supply the
sides of the test specimen so as to completely cover the
current to the heating unit. Above a temperature of 1470°F
calorimeter and inner guard area, and the soap brick placed
(800°C), the furnace atmosphere shall contain a minimum of
around the edge of the three brick so as to completely cover the
0.5 % oxygen with zero % combustibles. Take the atmosphere
calorimeter assembly. Th
...

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