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首页> 外文会议>6th International RILEM Symposium on Performance Testing and Evaluation of Bituminous Materials, (PTEBM'03) Pt.1 Apr 14-16, 2003 Zurich, Switzerland >PROPERTIES OF BITUMINOUS MIXTURES AT LOW TEMPERATURES AND RELATIONS WITH BINDER CHARACTERISTICS
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PROPERTIES OF BITUMINOUS MIXTURES AT LOW TEMPERATURES AND RELATIONS WITH BINDER CHARACTERISTICS

机译：低温下的两性混合物的性质及其与粘合剂特性的关系

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摘要

Within the framework of a partnership between the "Departement Genie Civil et Batiment" of ENTPE, Eurovia and Appia, a research including a large experimental campaign on the thermomechanical behavior of bituminous materials at low temperatures is proposed. The aim is to establish the links between the characteristics of the binder and the properties of bituminous mixes at low temperatures. Four different bitumens have been used with one type of aggregate and grading. The low temperature behavior of binders was evaluated with three fundamental tests : the complex modulus determination, the Bending Beam Rheometer and the tensile strength at a constant strain rate and constant temperatures. The thermomechanical behavior of bituminous mixes has been studied by performing complex modulus tests, measurements of the coefficient of thermal dilatation and contraction, tensile tests at constant temperatures and strain rates, and Thermal Stress Restrained Specimen Tests. The results are analyzed considering a rational approach. Some pertinent links between binders and mixes properties are established. Characteristics which are pertinent and discriminating enough with regard to the thermal cracking of bituminous mixes at low temperatures are presented.
机译：在ENTPE，Eurovia和Appia的“ Genie Civil and Batiment部门”之间的伙伴关系框架内，提出了一项研究，其中包括一项关于低温下沥青材料热力学行为的大型实验活动。目的是在低温下在粘合剂的特性和沥青混合物的特性之间建立联系。四种不同的沥青已用于一种类型的骨料和分级。用三个基本测试评估了粘合剂的低温行为：复模量测定，弯曲梁流变仪和在恒定应变速率和恒定温度下的拉伸强度。通过执行复杂的模量测试，热膨胀系数和收缩系数的测量，在恒定温度和应变速率下的拉伸测试以及热应力约束试样测试，研究了沥青混合物的热力学行为。考虑合理的方法分析结果。在粘合剂和混合物性能之间建立了一些相关的联系。提出了与沥青混合物在低温下的热裂解有关的特征和足够区别的特征。

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