1、Designation: C1190 95 (Reapproved 2010)C1190 18Standard Practice forLocation of Test Specimens from Magnesia-Carbon andImpregnated Burned Basic Brick1This standard is issued under the fixed designation C1190; the number immediately following the designation indicates the year oforiginal adoption or,
2、 in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers a procedure for preparing test specimens from magnesia-carb
3、on and impregnated burned basic brick.This practice generally concerns preparation of test specimens from brick greater than 13 in. (33 cm) in length. These brick aremainly manufactured for use in electric arc furnaces and basic oxygen furnaces.1.2 The values stated in inch-pound units are to be reg
4、arded as standard. The values given in parentheses are mathematicalconversions 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 responsibilityof the
5、user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardizationestab
6、lished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C133 Test Methods for Cold Crushing Strength and Modulus of Rup
7、ture of RefractoriesC607 Practice for Coking Large Shapes of Carbon-Bearing MaterialsC830 Test Methods forApparent Porosity, LiquidAbsorption,Apparent Specific Gravity, and Bulk Density of Refractory Shapesby Vacuum PressureC831 Test Methods for Residual Carbon, Apparent Residual Carbon, and Apparen
8、t Carbon Yield in Coked Carbon-ContainingBrick and ShapesC1099 Test Method for Modulus of Rupture of Carbon-Containing Refractory Materials at Elevated Temperatures3. Summary of Practice3.1 This practice defines a procedure for obtaining samples from carbon-containing basic brick. These samples can
9、be used tocharacterize the product for the following physical properties: hot modulus of rupture (MOR), as-received porosity, coked porosity,ignited porosity, carbon properties, coked modulus of rupture, and thermal expansion.3.2 This practice does not specify specific sample sizes. For specific sam
10、ple sizes, the particular ASTM test of interest shouldbe consulted.4. Significance and Use4.1 This practice defines a procedure that ensures reasonably consistent preparation of specimens for product testing andevaluation.4.2 This practice can be used in the laboratories of producers, users, and gen
11、eral interest parties for research and developmentor quality control work. It is particularly useful for interlaboratory comparisons on products, for repetitive evaluations orcomparisons of products or product quality, and in specifying a uniform preparation practice for specimens for acceptance tes
12、ting.1 This practice is under the jurisdiction of ASTM Committee C08 on Refractories and is the direct responsibility of Subcommittee C08.92 The Joseph E. KopandaSubcommittee for Editorial, Terminology, and Classification.Current edition approved Nov. 1, 2010Oct. 1, 2018. Published November 2010Octo
13、ber 2018. Originally approved in 1991. Last previous edition approved in 20052010as C1190 95 (2005).(2010). DOI: 10.1520/C1190-95R10.10.1520/C1190-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Stand
14、ardsvolume information, refer to the standards Document Summary page on the ASTM website.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. Becauseit may not be technically possible
15、to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Co
16、nshohocken, PA 19428-2959. United States14.3 If pitch impregnated pitch-impregnated samples are prepared by wet cutting or drilling, care should be taken in drying them.If the samples are heated to facilitate drying, the temperature to which they are heated should not be so high that it causes drain
17、ageof pitch from the samples.4.4 Porosities of metal-containing brick must be measured using kerosene or mineral spirits, because using water will result inan artificially low result.5. Apparatus5.1 Saw or Drill, appropriate for cutting dense refractory shapes.6. Procedure6.1 Use Test Methods C133 f
18、or measuring the three-point modulus of rupture. First break the as-received brick across its widthin a three-point modulus of rupture test as indicated in Fig. 1. Note that for a 30-in. (76-cm) long brick, the cold modulus of rupturebreak is at a distance of 11.5 in. (29 cm) from the large end of t
19、he brick.All other brick sizes should be at the same relative distanceor 38.3 % of the distance from the large end of the key; for example, for an 18-in. (46-cm) long brick the distance should be 18in. (46 cm) 0.383 = 6.89 in. (17 cm) from the large end of the brick. All other samples shall be taken
20、 out of the influence ofthe cold modulus of rupture break.6.2 Then cut or drill samples for running the following tests from the brick: hot modulus of rupture, as-received porosity, cokedporosity, ignited porosity, carbon properties, coked modulus of rupture, and thermal expansion. Fig. 1 indicates
21、the locations fromwhich the samples are to be cut or drilled.6.3 If wet cut, dry the samples at 150 to 250F250 F (66 to 121C).121 C). See 4.3 for precautions that should be taken intoconsideration when dealing with pitch-impregnated samples.6.4 Use Test Method C1099 for measuring the hot modulus of
22、rupture.6.5 Use Practice C607 for coking the coked modulus of rupture sample.6.6 Use procedures outlined in Test Methods C831, in for coking and igniting the porosity samples,samples and infordetermining carbon properties.6.7 Use Test Methods C830 infor the porosity measurements.6.8 A standard test
23、method for measuring the thermal expansion of carbon-containing refractories is currently underdevelopment by ASTM Subcommittee C08.01.6.9 No standard ASTM test method exists for measuring the cold modulus of rupture of large shapes such as those describedin this practice.NOTE 1For a 30-in. (76-cm)
24、long brick the cold MOR is at 1112 in. (29 cm). All other brick sizes should be at the same relative distance or 38.3 %of the distance from the cold face; for example, for 18-in. (46-cm) long brick: 18 in. (46 cm) 0.383 = 6.89 in. (17 cm) from the cold face. Physicalsample must be taken out of the i
25、nfluence of the cold MOR break.FIG. 1 Location of Test Specimens from Magnesia-Carbon, Impregnated Burned BrickC1190 1827. Keywords7.1 impregnated burned brick; magnesia-carbon; pitch-bearing brick; refractories; resin-bonded brick; specimen operationASTM International takes no position respecting t
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