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Study of bitumen crystallization by temperature-modulated differential scanning calorimetry and rheology

机译：温度调制差示扫描量热法和流变学研究沥青的结晶

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摘要

Asphalt bitumens are complex colloidal systems of high viscosity and complex behavior, which are mainly used for making asphalt concrete for road surfaces. Thermal and rheological characterizations are needed to understand their complex behavior, particularly at the processing stage. Prediction of properties at short and long observation times is usually performed through time-temperature superposition (TTS) models, which make use of some calculated shift factors. The influence of crystallization-like transformation processes on the validity of these shift factors is investigated here by temperature-modulated differential scanning calorimetry (TMDSC). Four asphalt emulsions are considered in this work, each one with a specific transformation behavior. The structure-properties relationships are explained on the basis of the transformation profiles and rheological data.
机译：沥青沥青是具有高粘度和复杂行为的复杂胶体体系，主要用于制造路面沥青混凝土。需要热学和流变学表征来了解它们的复杂行为，尤其是在加工阶段。通常通过时间-温度叠加（TTS）模型来执行对短和长观察时间的属性的预测，该模型利用一些计算出的偏移因子。本文通过温度调制差示扫描量热法（TMDSC）研究了类结晶转变过程对这些位移因子有效性的影响。在这项工作中考虑了四种沥青乳液，每种具有特定的转化行为。基于转变曲线和流变数据解释了结构-性质关系。

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  • 来源
    《Journal of Materials Research》 |2012年第10期|p.1410-1416|共7页
  • 作者

    Jesus Lopez-Paz; Carlos Gracia-Fernandez; Silvia Gomez-Barreiro; Jorge Lopez-Beceiro; Javier Nebreda; Ramon Artiaga;

  • 作者单位

    Department of Industrial Engineering, University of A Coruna, Higher Polytechnic School, Campus de Esteiro, Ferrol 15403, Spain;

    Thermal Analysis, Rheology and Microcalorimetry Applications, TA Instruments—Waters Cromatografia, Alcobendas 20108, Madrid, Spain;

    Departament of Applied Physics, CESUGA, University College of Dublin, A Coruna 15190, Spain;

    University of A Coruna, Higher Polytechnic School, Campus de Esteiro, Ferrol 15403, Spain;

    Corvisa, Productos Asfdlticos y Aplicaciones, Madrid 28021, Spain;

    University of A Coruna, Higher Polytechnic School, Campus de Esteiro, Ferrol 15403, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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