1、Designation: C 1190 95 (Reapproved 2005)Standard Practice forLocation of Test Specimens from Magnesia-Carbon andImpregnated Burned Basic Brick1This standard is issued under the fixed designation C 1190; the number immediately following the designation indicates the year oforiginal adoption or, in th
2、e case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers a procedure for preparing testspecimens from magnesia-carbon and
3、 impregnated burnedbasic brick. This practice generally concerns preparation of testspecimens from brick greater than 13 in. (33 cm) in length.These brick are mainly manufactured for use in electric arcfurnaces and basic oxygen furnaces.1.2 The values stated in inch-pound units are to be regardedas
4、standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of thi
5、s standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 607 Practice for Coking Large Shapes of Carbon-BearingMaterialsC 830 Test Methods for Apparent Porosity, Liquid Absorp
6、-tion, Apparent Specific Gravity, and Bulk Density ofRefractory Shapes by Vacuum PressureC 831 Test Methods for Residual Carbon, Apparent Re-sidual Carbon, and Apparent Carbon Yield in CokedCarbon-Containing Brick and ShapesC 1099 Test Method for Modulus of Rupture of Carbon-Containing Refractory Ma
7、terials at Elevated Temperatures3. Summary of Practice3.1 This practice defines a procedure for obtaining samplesfrom carbon-containing basic brick. These samples can be usedto characterize the product for the following physical proper-ties: hot modulus of rupture (MOR), as-received porosity,coked p
8、orosity, ignited porosity, carbon properties, cokedmodulus of rupture, and thermal expansion.3.2 This practice does not specify specific sample sizes. Forspecific sample sizes, the particular ASTM test of interestshould be consulted.4. Significance and Use4.1 This practice defines a procedure that e
9、nsures reason-ably consistent preparation of specimens for product testingand evaluation.4.2 This practice can be used in the laboratories of produc-ers, users, and general interest parties for research and devel-opment or quality control work. It is particularly useful forinterlaboratory comparison
10、s on products, for repetitive evalu-ations or comparisons of products or product quality, and inspecifying a uniform preparation practice for specimens foracceptance testing.4.3 If pitch impregnated samples are prepared by wetcutting or drilling, care should be taken in drying them. If thesamples ar
11、e heated to facilitate drying, the temperature towhich they are heated should not be so high that it causesdrainage of pitch from the samples.4.4 Porosities of metal-containing brick must be measuredusing kerosene or mineral spirits because using water willresult in an artificially low result.5. App
12、aratus5.1 Saw or Drill, appropriate for cutting dense refractoryshapes.6. Procedure6.1 First break the as-received brick across its width in athree-point modulus of rupture test as indicated in Fig. 1. Notethat for a 30-in. (76-cm) long brick, the cold modulus ofrupture break is at a distance of 11.
13、5 in. (29 cm) from the largeend of the brick. All other brick sizes should be at the samerelative distance or 38.3 % of the distance from the large end ofthe key; for example, for an 18-in. (46-cm) long brick thedistance should be 18 in. (46 cm) 3 0.383 = 6.89 in. (17 cm)1This practice is under the
14、jurisdiction ofASTM Committee C08 on Refractoriesand is the direct responsibility of Subcommittee C08.92, The Joseph E. KopandaSubcommittee for Editorial, Terminology and Classification.Current edition approved Dec. 1, 2005. Published January 2006. Originallyapproved in 1991. Last previous edition a
15、pproved in 2000 as C 1190 95 (2000).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM Internati
16、onal, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.from the large end of the brick.All other samples shall be takenout of the influence of the cold modulus of rupture break.6.2 Then cut or drill samples for running the following testsfrom the brick: hot modulus
17、 of rupture, as-received porosity,coked porosity, ignited porosity, carbon properties, cokedmodulus of rupture, and thermal expansion. Fig. 1 indicates thelocations from which the samples are to be cut or drilled.6.3 If wet cut, dry the samples at 150 to 250F (66 to121C).6.4 Use Test Method C 1099 f
18、or measuring the hot modulusof rupture.6.5 Use Practice C 607 for coking the coked modulus ofrupture sample.6.6 Use procedures outlined in Test Methods C 831,incoking and igniting the porosity samples, and in determiningcarbon properties.6.7 Use Test Methods C 830 in the porosity measurements.6.8 A
19、standard test method for measuring the thermalexpansion of carbon-containing refractories is currently underdevelopment by ASTM Subcommittee C08.01.6.9 No standard ASTM test method exists for measuring thecold modulus of rupture of large shapes such as those describedin this practice.7. Keywords7.1
20、impregnated burned brick; magnesia-carbon; pitch-bearing brick; refractories; resin-bonded brick; specimenoperationASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly ad
21、vised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, eithe
22、r reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend.
23、If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Indiv
24、idual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).NOTEFor a 30-in. (76-cm) long brick the cold MOR is at 1112 in. (2
25、9 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) 3 0.383 = 6.89 in. (17 cm) from the cold face. Physicalsample must be taken out of the influence of the cold MOR break.FIG. 1 Location of Test Specimens from Magnesia-Carbon, Impregnated Burned BrickC 1190 95 (2005)2
