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简介：HuaxinCementCo.,Ltd.InvestedCNY1.5BilliontoBuildBuildingMaterialsBaseOnApril28,HuaxinCementCo.,Ltd.signeda-greementwiththegovernmentofYubei,Chongqing,to

简介：Thenumberofnewprojectstartsisstillhigh,pointingtoahugeinvestmentboomin2010CementandsteelproductionnumbersareabettergaugeofrealactivitythanFAInumbers,butalsohaveissuesBothhaveplateauedrecentlybutarelikelytorisemoreafterthemid-Februaryholiday

简介：碱的特征激活炉渣(AAS)，港口陆地水泥(PC)被观察在上多尺度，裂缝和破裂节与肉眼，和SEM被观察，AFM被用来在测微计上学习PC和AAS之间的结构形态学差别到nano米规模。试验性的结果显示AAS浆糊有象骨折质地一样的土壤，它由组成主要C-S-H胶化但是晶体的缺乏，并且它有一个很强壮的趋势缩小并且裂开。AAS浆糊比PC稠密得多、更同类，并且在AAS粘贴在nano上放大C-S-Hnano粒子小得多并且包装比PC浆糊稠密的大部分。

简介：Thehydrothermalreactivityofsilicasandwasstudiedusingcementkilndust(CKD)asanactivatorinadditiontothePortlandcementfractionofEl-Karnakcement(ablendofordinaryPortlandcementandgroundsand).AutoclavedEl-Karnakcementpasteswerestudiedatpressuresof0.507,1.013and1.520MPaofsaturatedsteamwithrespecttotheircompressivestrength,kineticsofhydrothermalreactionandthephasecompositionoftheformedhydrates.TheroleofCKDinaffectingthephysicochemicalandmechanicalpropertiesofEl-Karnakcementpasteswasstudiedbyautoclavingofseveralpastescontaining5,7.5,10and20%CKDatapressureof1.013MPaofsaturatedsteam.CKDwasaddedeitherasarawCKD(unwashed)orafterwashingwithwater(washedCKD).TheresultsofthesephysicochemicalstudiesobtainedcouldberelatedasmuchaspossibletotheroleofCKD(raworwashed)inaffectingthehydrothermalreactivityofsilicasandinEl-Karnakcementpastes.

简介：JC496-921ScopeThisstandardspecifiestheclassification,technicalrequirements,testmethods,inspectionrules,marking,packing,transportationandstorageofalkaliresistantbricks.

简介：Thetechnologyofactivationbyaddingfewactivators(<1%)toincreasetheamountofblendsincementwasinvestigated.Theresultsshowthatouteractiva-tionhasaremarkableeffectonimprovingthephysicalpropertiesofslagcement,flyashcementandvolcaniccement.Forexample,thecompressivestrengthwasincreasedby5-10MPa.Morever,theapplicationofactivationisbeneficialtogrind-aiding,earlystrengthandwater-reducingetc.

简介：Thisarticledescribestheclassificationofrefractoryaluminateement,andanalyzessomeproblemsoftherefractoryaluminatecementmanufacture,Thedevelopingprospectofrefactoryaluminatecementisalsooutlinedinthisarticle.

简介：ThePortlandcementisequivalentlysubstitutedbyslagmicropowderswithvariousspecificareas.Theworkability,activityandacid-corrosionresistanceoftheslag-substitutedcementsareinvestigated,theactivationofgypsumisdiscussed,alsotheporosityandporedistributionofmortarsoftheslagmicropowderscementaredeterminedbymercuryintrusionporosimetry.

简介：Oneofthechiefmaterialsusedintheconstructionofbuildingsandroadsiseement(水泥),apowdermademainlyfromlimestone(石灰石)andclay(粘土).EventheancientEgyptiansandRomans(罗马人)usedakindofcement,butitwasnotuntil1824thatanEnglishbricklayer(泥瓦匠)developedacementstrongenoughformodemroadsandbuilding.

简介：Basedonthesandwichtest,adherencemechanismsofcementclinkeronvariousbasicbricksweretackledbymicrostructuralobservationswithhelpofcathodoluminescencetechnique.Dolomabasedbricksoffersufficientlimetoreactwithclinker,formingC3Srichlayerandinitializingsuperioradherence.However,clinkerwithlowsilicaratioleadstoMgOagglomerationattheinterfaceofdolomabricks,whichreducesadherencestrength.Onmagnesiaspinelbricks,finecrystallinespineleasilyreactswithlimecontainingphasesfromclinkertoformlowmeltingphasesandbelitezone,whichshowshighadherenceperformance.Lackoffinespinelinmagnesiaspinelbricksresultsinpooradherence.

简介：一系列调查被进行学习适用的能力和混合的使硬的深水泥(SDCM)的负担转移机制堆积。实验试验包括六个标本被进行调查在具体核心和thecement土壤之间的摩擦抵抗。二模型堆积和24照原尺寸的堆积被测试检验单个堆积的适用的行为。实验室和模型测试结果显示连贯的力量足够大保证在核心堆积和外部水泥土壤之间的相互作用。full-scaletest结果证明SDCM堆积展出类似的适用的行为到无聊并且cast-in-placeconcrete堆积。一般来说，与合理合成结构，SDCM堆积能有效地播送应用负担，并且由于更生硬的核心的增加，SDCM堆积拥有高适用的能力。基于这些试验性的调查和理论分析的调查结果，一个实际设计方法被开发预言SDCMpile的垂直适用能力。

简介：Thispaperpresentsaninvestigationonstrengthofcementdeepmixing(CDM)mixture.Fourtypicalworksofoffshoreorland-basedprojectsareintroduced.Withsamplesfromtheseprojectsandlaboratorytests,statisticalanalysisismadeontheincrementlawofthestrengthofcement-soilmixturewithdifferentamountofcement,andstrengthsunderdifferentworkingconditionsarecompared.Itisfoundthattheamountofcementinthecement-soilmixtureiscloselyrelatedtotheunconfinedcompressivestrengthofthemixture.Attheageof90d,theunconfinedcompressivestrengthofthecement-soilmixtureincreasedby0.054Mpa-0.124Mpawitheachcementincreasing10kg/m3inthecement-soilmixture,averagelyincreasedby0.085Mpa,whilethatattheageof120dincreasedby11%incomparison.Thequalityofthecement-soilmixtureshouldbecomprehensivelyevaluatedinaccordancewiththetrimmedaverageofstrength,coefficientofvariationandrockqualitydesignation(RQD)indicatorsofsamplingratio.

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简介：Inthispaperforsavingenergytwodifferentburningmethodsofcementclinkerformationhavebeenstudied.Oneistherapidburningmethodandtheotherisordinaryburningmethodsimulatingrotarykiln,andtheyarecomparedbythekineticpointofview.Theresultrevealsthattheactivationenergyofrapidburningismuchlowerthanordinaryburning.Forlookingintothecause,themainrawmaterial—limestonewasburntbythesametwomethodsandthestructureofproductCaOhasbeendetected.ItcanbefoundthatthemicrostructureofCaOproducedbyrapidburningislooser;latticesconstantsaregreater;crystaldefectsaremoreandparticlesizeissmallerthanthatproducedbyordinaryburning.Thesecausethechemicalreactionmoreactive.Sotheactivationenergyofclinkerformationofrapidburningismuchlowerthanthatoftheordinaryburning.

简介：称片的方法被用来调查不同水泥(灰)浆的不饱和的水运输。锋利的弄湿前面存在在期间的试验性的结果表演浇运输，运输能被一个非线性的散开方程描述，；搬运有水的各种各样的规则材料满足的不同材料展览的系数。所有各种各样的水里的水泥(灰)浆的苍蝇灰减少运输系数的增加满足，甚至变化运输机制。

简介：纤维素醚广泛地习惯于臼明确的表达，并且理解在纤维素醚和水泥粘贴之间的相互作用是重要的。英尺红外系列，热分析和SEM被用来在HEMC和HPMC在这篇文章修改的水泥粘贴调查水和产品。结果证明在修改水泥粘贴的水和产品与在未修改的水泥浆糊，而是主要水和产品的那些是最后相同的，例如CH(氢氧化钙)，ettringite和C-S-H，比的在修改水泥粘贴显得以后在未修改的水泥浆糊。纤维素醚减少外部产品和增加C-S-H胶化的内部产品。比作未修改的水泥粘贴，没有新产品在现在的实验在修改水泥粘贴被发现。HEMC和HPMC调查几乎在波特兰水泥的水和产品上显示出一样的影响。

简介：INTRODUCTIONCalciumphosphatecements(CPC)overcomethepracticaldisadvantagesofblocksorgranuleslcanbehandledasapasteandsitinsitu.TheirstructureandcompositionclosetothatofHAPmakethembiocompatiblematerials.2Theconventionalcalciumphosphatecementhadsomeproblemssuchaslongsettingtime(30～60min)andlowcompressivestrength,etc.Inoursystem,anα-TCP/TTCPpowdermixturewasmixedwithwatercontainingcitricacidtocontrolthesettingtimeandcompressivestrength.Inthispaper,theeffectsofvariousconcentrationcitricacidsolutionsonthepropertiesofthecementarereported.

简介：Anewsandwichtesthasbeendevelopedtomeasuretheadherenceofcementclinkeronbasicrefractoriestotesttheircoatability,Statisticaldesingsofexperimentmethod-ologywereemployedforevaluationsofthesandwichtest.Threefractionalfactorialtestsandonefullfactorialtestwereexecutedtoefficientlygeneratedatathatrevealthesignificanceofthemajorfactorsandtheruggednesstotheminorfactors.Itsrepeatabilityandreproducibilityhavebeenstatisticallyconfirmedtobeacceptable,Evaluationsonvariousbasicbricksbythesandwichtestreflecttheircoatingperformanceinrotarykiln.

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