ASTM_C_1190_-_95_2010.pdf

Designation:C119095(Reapproved 2010)Standard 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,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 testspecimens from magnesia-carbon and 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 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 this 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:2C607 Practice for Coking Large Shapes of Carbon-BearingMaterialsC830 TestMethodsforApparentPorosity,LiquidAbsorption,Apparent Specific Gravity,and Bulk Densityof Refractory Shapes by Vacuum PressureC831 Test Methods for Residual Carbon,Apparent ResidualCarbon,and Apparent Carbon Yield in Coked Carbon-Containing Brick 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 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 porosity,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 ensures reason-ably consistent preparation of specimens for product testingand evaluation.4.2 This practice can be used in the laboratories ofproducers,users,and general interest parties for research anddevelopment or quality control work.It is particularly usefulfor interlaboratory comparisons on products,for repetitiveevaluations or comparisons of products or product quality,andin specifying 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 are 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.Apparatus5.1 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 11.5 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)0.383=6.89 in.(17 cm)1This practice is under the jurisdiction ofASTM Committee C08 on Refractoriesand is the direct responsibility of Subcommittee C08.92The Joseph E.KopandaSubcommittee for Editorial,Terminology and Classification.Current edition approved Nov.1,2010.Published November 2010.Originallyapproved in 1991.Last previous edition approved in 2005 as C1190 95(2005).DOI:10.1520/C1190-95R10.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 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 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 C1