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ASTM C1171-05

(Test Method)

Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories

Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories

SIGNIFICANCE AND USE
This test method indicates the ability of a refractory product to withstand the stress generated by sudden changes in temperature.
Because the recommended furnace temperature of this cycling test is 1200°C (2190°F), this test method may not indicate the ability of a refractory product to withstand cycling at higher or lower temperatures, especially if the existing morphology of the refractory product changes.
This test method is useful for research and development, as well as for comparing refractory products. The precision should be considered when using this test for specification purposes.
Ruggedness tests found the following variables to be rugged:
temperature +5°C  hot spacing ½ to 3/4in. (12.77 to 19 mm)  cold spacing ½ to 3/4 in. (12.77 to 19 mm)  center vs. end gripping of the bars
  hot hold time 10 to 15 min  cold hold time 10 to 15 min  operator air speed 0 to 2 mi/h (0 to 3.2 km/h)  initially cold or heated samples
  last in, first out (LIFO); or first in, first out (FIFO)
removal from the furnace
  sawed or original surface as tensile face during MOR testing  bar thickness 0.96 to 1.04 in. (24.5 to 26.4 mm)
SCOPE
1.1 This test method is used for determining the strength loss or reduction in continuity, or both, of prism-shaped specimens which are cut from refractory brick or shapes and subjected to thermal cycling.
1.2 The strength loss is measured by the difference in modulus of rupture (MOR) between uncycled specimens and the specimens subjected to thermal cycling.
1.3 The reduction in structural continuity is estimated by the difference in sonic velocity before and after thermal cycling.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values stated in parentheses are for information only.
1.5This 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.

General Information

Status
Historical
Publication Date
30-Apr-2005
ICS
17.200.10 - Heat. Calorimetry
81.080 - Refractories
Technical Committee
C08 - Refractories
Drafting Committee
C08.02 - Thermal Properties
Current Stage
Ref Project

Relations

Replaces
ASTM C1171-96(2003) - Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories
Effective Date
01-May-2005
Replaced By
ASTM C1171-05(2011) - Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories
Effective Date
01-Mar-2011

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ASTM C1171-05 - Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on RefractoriesASTM C1171-05 - Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories
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ASTM C1171-05 - Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories
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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:C1171–05
Standard Test Method for
Quantitatively Measuring the Effect of Thermal Shock and
1
Thermal Cycling on Refractories
This standard is issued under the fixed designation C1171; 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 E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
1.1 This test method is used for determining the strength
loss or reduction in continuity, or both, of prism-shaped
3. Significance and Use
specimens which are cut from refractory brick or shapes and
3.1 This test method indicates the ability of a refractory
subjected to thermal cycling.
product to withstand the stress generated by sudden changes in
1.2 The strength loss is measured by the difference in
temperature.
modulus of rupture (MOR) between uncycled specimens and
3.2 Because the recommended furnace temperature of this
the specimens subjected to thermal cycling.
cycling test is 1200°C (2190°F), this test method may not
1.3 Thereductioninstructuralcontinuityisestimatedbythe
indicate the ability of a refractory product to withstand cycling
difference in sonic velocity before and after thermal cycling.
at higher or lower temperatures, especially if the existing
1.4 The values stated in inch-pound units are to be regarded
morphology of the refractory product changes.
as the standard. The values stated in parentheses are for
3.3 Thistestmethodisusefulforresearchanddevelopment,
information only.
as well as for comparing refractory products. The precision
1.5 This standard does not purport to address all of the
should be considered when using this test for specification
safety concerns, if any, associated with its use. It is the
purposes.
responsibility of the user of this standard to establish appro-
3.4 Ruggedness tests found the following variables to be
priate safety and health practices and determine the applica-
rugged:
bility of regulatory limitations prior to use.
temperature +5°C
1 3
hot spacing ⁄2 to ⁄4 in. (12.77 to 19 mm)
2. Referenced Documents
1 3
cold spacing ⁄2 to ⁄4 in. (12.77 to 19 mm)
2
2.1 ASTM Standards:
center vs. end gripping of the bars
hot holdtime 10to15min
C133 Test Methods for Cold Crushing Strength and Modu-
coldholdtime 10to15min
lus of Rupture of Refractories
operator air speed 0 to 2 mi/h (0 to 3.2 km/h)
C607 Practice for Coking Large Shapes of Carbon-Bearing
initially cold or heated samples
last in, first out (LIFO); or first in, first out (FIFO)
Materials
removal from the furnace
C1419 Test Method for Sonic Velocity in Refractory Mate-
sawed or original surface as tensile face during MOR testing
rials at Room Temperature and Its Use in Obtaining an bar thickness 0.96 to 1.04 in. (24.5 to 26.4 mm)
Approximate Young’s Modulus
4. Apparatus
E4 Practices for Force Verification of Testing Machines
4.1 Furnace, capable of maintaining 1200°C (2190°F) with
recovery rate of less than 5 min to temperature.
1
This test method is under the jurisdiction of ASTM Committee C08 on 4.2 Abrasive Saw, to cut the test specimens.
Refractories and is the direct responsibility of Subcommittee C08.02 on Thermal
4.3 Dryer,capableofoperatingat105°Cto110°C(220°Fto
Properties.
230°F).
Current edition approved May 1, 2005. Published May 2005. Originally
4.4 Tongs or Fork, for handling hot specimens.
published in 1991 as C1171 – 91. Last previous edition approved in 2003 as
C1171 – 96 (2003). DOI: 10.1520/C1171-05.
4.5 Safety Equipment, such as gloves, face shields, and
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
tinted safety glasses.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4.6 Alumina Setter Brick, 90 %, placed 5 in. (127 mm) apart
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. in and outside the furnace.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C1171–05
specimens into two equal groups on the basis of similar
distributions of velocity measurements.
7.2 Determine the cold modulus of rupture (using Test
Methods C133) on one group, using three point loading with a
5-in. (127-mm) span and a loading rate of 175 lbf/min (778
N/mm).
7.3 Preheat the test furnace to the test temperature of 1200
6 15°C (2190 6 25°F); preheating is usually done the night
prior to testing. Use of other test temperatures is allowed and
must be included as a deviation in the report.
7.4 Place the test specimens from the remaining group int
...

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3.1 This test method indicates the ability of a refractory product to withstand the stress generated by sudden changes in temperature.  
3.2 Because the recommended furnace temperature of this cycling test is 1200 °C (2190 °F), this test method may not indicate the ability of a refractory product to withstand cycling at higher or lower temperatures, especially if the existing morphology of the refractory product changes.  
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1.1 This test method is used for determining the strength loss or reduction in continuity, or both, of prism-shaped specimens which are cut from refractory brick or shapes and subjected to thermal cycling.  
1.2 The strength loss is measured by the difference in modulus of rupture (MOR) between uncycled specimens and the specimens subjected to thermal cycling.  
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3.1 This test method indicates the ability of a refractory product to withstand the stress generated by sudden changes in temperature.  
3.2 Because the recommended furnace temperature of this cycling test is 1200 °C (2190 °F), this test method may not indicate the ability of a refractory product to withstand cycling at higher or lower temperatures, especially if the existing morphology of the refractory product changes.  
3.3 This test method is useful for research and development, as well as for comparing refractory products. The precision should be considered when using this test for specification purposes.  
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Last in, first out (LIFO); or first in, first out (FIFO)
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