混凝土早期强度SCI论文翻译

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1、专业英语SCI论文翻译学院：土木工程与建筑学院班级：硕研姓名：学号：15专业：结构工程指导教师:Ontherelationofsettingandearly-agestrengthdevelopmenttocement-basedmaterials关于水泥基材早期强度发展的关系的研究Abstract：Previousresearchhasdemonstratedalinearrelationshipbetweencompressivestrength(mortarcubesandconcretecylinders)

2、andcumulativeheatreleasenormalizedperunitvolumeof(mixing)waterforawidevarietyofcement-basedmixturesatagesof1dandbeyond.Thispaperutilizesconcurrentultrasonicreflectionandcalorimetrymeasurementstofurtherexplorethisrelationshipfromthetimeofspecimencastingto3d.The

3、ultrasonicmeasurementspermitacontinuousevaluationofthickening,setting,andstrengthdevelopmentduringthistimeperiodforcomparisonwiththeongoingchemicalreactions,ascharacterizedbyisothermalcalorimetrymeasurements.Initially,theultrasonicstrength-heatreleaserelationd

4、ependsstronglyonwater-to-cementratio,aswellasadmixtureadditions,withnouniversalbehavio匸Still,eachindividualstrength-heatreleasecurveisconsistentwithapercolation-basedviewofthecementsettingprocess.However,beyondabout8hforthesystemsinvestigatedinthepresentstudy,

5、thevariousstrength-heatreleasecurvesmergetowardsasinglerelationshipthatbroadlycharacterizesthedevelopmentofstrengthasafunctionofheatreleased(fractionalspacefilled),demonstratingthatconcretestrengthatearlyagescanbeeffectivelymonitoredusingeitherultrasonicorcalo

6、rimetrymeasurementsonsmallpasteormortarspecimens.摘要：先前的研究证实了在一天当屮(砂浆立方体和混凝土柱的)抗压强度和多种水泥混合物的热量释放总和之间成线性关系，以单位体积水的热量为计量单位。本文利用超声波反射和热量测量法，进一步探索从实块浇筑到3天的时间这种关系。超声测量能够对该时间段内增稠、凝固以及强度发展做出连续评价以对正在进行的化学反应做岀比较，其特征在于能够进行等温量热法测量。最初，超声强度热释放关系在很大程度上依赖于水灰比以及外加剂用量，并且没有规律可循。

7、尽管如此，每个试块的强度•放热曲线却与水泥硕化过程中以渗流为基础的视图一致。然而，除了用于木研究调杳了系统约8小时，齐种强度的热释放曲线合并向一个单一的关系，这一关系表明了(混凝土试块)强度的发展可以作为热释放的函数；也表明混凝土早起强度可以通过对试件的超声波反射或热量测量的方法进行有效的监测。Keywords：Calorimetry；Hydration；Percolation；Porosity；Setting；Strength；Ultrasonicreflection关键词：量热法;水化;渗流;孔隙度;硬化;强度

8、;超声波反射1・IntroductionHistorically,concretehasbeenevaluatedprincipallybasedonitscompressivestrength.Extensiveandoftenexpensivetestingpro-grams,intermsofbothmanpowerandmaterialresourc