简介：Cement-mixedpiles,ascountermeasureagainstliquefactionofsiltandsandground,canimprovetheshearstrengthandbearingcapacityoffoundationsoil,meaningcement-mixedpilesarecapableofresistingdisplacementwhenanearthquakehappens.However,investigationsofcement-mixedpilesbyexperimentalmethodssuchastheshakingtabletestisfewandfarbetween.Itisespeciallytruefortheseismicperformanceofcement-mixedpilesinliquefiablerailwayfoundationsinhighseismicintensityregions.Tothisend,across-sectionoftheYuxi-Mengzirailwaywasselectedastheprototypeandstudiedbytheshakingtabletestinthisstudy.Theresultsshowedthatcompositefoundationofcementmixedpileswasnotliquefiedwhentheseismicaccelerationwaslowerthan0.30g.Intheprocessofaccelerationincreasingfrom0.30gat2Hzto0.60gat3Hz,theuppermiddlesiltoutsideslopetoewaspartlyliquefied.Thefoundationsoilundertheshouldersandcenterofsubgradewasfarfromtheinitialliquefactioncriterionduringthetest.Cementmixedpilescaneffectivelyreducetheembankmentsettlementanddifferentialsettlement.Itcanbeconcludedthat,thedesignofcement-mixedpilescanensuretheseismicperformanceofthesubgrade,andsatisfytheseismicdesignrequirementsoftheYuxi-MengzirailwayinareasofVIIIdegreesseismicfortificationintensity.

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。

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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：Amongthepresentthreetypesofelectricfield-inducedluminescencewenoticedsimilaritiesbetweentheinorganicandorganicmaterialsinelectricfieldintensity.InthishighelectricfieldrangeSiO2hasthreefunctions:acceleration,excitationandmultiplicationofelectrons.Basedontheaccelerationeffect,cathodoluminescence-likeemissionoforganicmoleculesandpolymerswasfound.ByusingthethreefunctionsofSiO2orII-VIcompoundsandtheheterojunctionofinorganicandorganicmaterialwerealizeddifferentvariantsofmixedexcitationinelectroluminescence.

简介：Basedontheadvantagesofthemixedclarifierandtowerextractor,amulti-layerclarificationextractor---anewtypeofmixedclarifier,hasbeendeve-loped,andhasalreadybeenappliedtotheseparationofREelementsandgerma-

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：ＭＡＣＲＯＭＡＮＡＧＥＭＥＮＴＯＦＴＨＥＭＩＸＥＤＥＣＯＮＯＭＹＩＮＩＮＤＩＡＷｅｎＦｕｄｅＴｈｅｍｉｘｅｄｅｃｏｎｏｍｙｉｓ，ｎｏｔｏｎｌｙａｎｉｍｐｏｒｔａｎｔｓｕｂｊｅｃｔｆｏｒｓｃｈｏｌａｒｓ．ｂｕｔａｌｓｏａｐｒａｃｔｉｃａｌｐｒｏｂ－ｌｅ...

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。