作者:标准资料网 时间:2024-05-24 14:06:25   浏览:9778   来源:标准资料网

【英文标准名称】:StandardTestMethodforColdBondingStrengthofRefractoryMortar
【原文标准名称】:耐火灰浆的冷粘接强度的标准试验方法
【标准号】:ASTMC198-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C08.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:coldbondingstrength;flexuralstrength;hightemperature;modulusofrupture;refractorymortar;Bondstrength--masonry/mortar;Coldbondingstrength;Modulusofrupture(MOR)--refractories;Refractorymortar;Strength
【摘要】:Thedatadevelopedbythistestmethodshowthebondingstrengthandintrinsicstrengthofdifferentqualitiesofair-settingmortar.Theproceduresdescribedinthistestmethodmeasurethebondingstrengthandintrinsicstrengthofair-settingmortarswhenusedwithspecificbrandsorlotsofrefractorybrick.Notethatitispossibletoobtainresultswiththesemethodsforbrickandmortarcombinationswhichareincompatibleforuseathighoperatingtemperatures.Theusermustdeterminethiscompatibility.Onlybrickandmortarcombinationsknownorintendedtobecompatibleforaparticularuseshouldbetested.Propertiesofthebrick,includingitsstrength,apparentporosity,andporesizedistribution,canaffectthemeasurementofboththebondingstrengthofthebrick-mortarcompositeandtheintrinsicstrengthofthemortar.Theaveragemodulusofruptureofthetestbrick,asdeterminedbyTestMethodC133,shouldexceedthatexpectedforthemortarbeingtested.Thetestingofspecificbrandsorlotsofbrickandmortarispreferred.Threemodesoffailureareavailable:thebreakmayoccurwithinthebrickitself,atthebrick-mortarinterface,orwithinthemortaritself.Thelatterprovidesapracticalmeasurementofthestrengthofthemortaritselfandisthepredominantmodeoffailurewiththefour-pointflexuretestdescribed.Thethree-pointflexuretestmeasuresthefailurestrengthofthebrick-mortarcomposite.Failurewithinthebrickitselfsuggeststhateithertheparticularbrickcontainedaseriousflaw,orthatthemortarjointstrengthisofthesamemagnitudeorgreaterthanthatoftherefractorybrick.Themodeoffailureshouldalwaysbereportedinthefinalreport.Aruggednesstestforthistestmethodperformedin1985foundthefollowingvariablestoberugged:specimensize(2.5to3.0in.),mortaredsurface(cutversusuncut),jointthickness(1/16to1/8in.),pullingofrods(fastversusslow),theloadingrate(500to1000lbf/min),themethodofloadapplication(3-versus4-point),andtheoperator.Thecoldbondingstrengthsofrefractorymortarsobtainedbythistestmethodaresuitableforuseinresearchanddevelopment,qualitycontrol,andforestablishingandevaluatingcompliancewithspecificationsbetweenproducersandconsumers.1.1Thistestmethodcoversthedeterminationofthebondingstrengthofair-settingrefractorymortarbydeterminingtheflexuralstrength(modulusofrupture)atroomtemperatureofoven-driedbrick-mortarjoints.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q40
【国际标准分类号】:91_100_10
【页数】:4P.;A4
【正文语种】:英语