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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 >INFLUENCE OF REST TIME ON RECOVERY AND DAMAGE DURING FATIGUE TESTS ON BITUMINOUS COMPOSITES
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INFLUENCE OF REST TIME ON RECOVERY AND DAMAGE DURING FATIGUE TESTS ON BITUMINOUS COMPOSITES

机译：疲劳时间对双组分复合材料疲劳测试期间的恢复和损坏的影响

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摘要

Introducing rest periods during fatigue tests can significantly improve the remaining lifetime of bituminous mixes. An experimental protocol has been designed such as to study the range and kinetics of loss of stiffness and recovering of properties during rest periods. The range of the maximum recovery depends on the number of cycles previously applied. Recovery is not permanent and the loss of stiffness speeds up under repeated fatigue sequences. The speed of loss: of stiffness seems to be a damage indicator. It evolves differently according to the fact that the specimen has (or not) previously been subjected to more aggressive solicitations. This points out the fact that the mix keeps in memory previous loadings.
机译：在疲劳测试期间引入休息时间可以显着提高沥青混合料的剩余寿命。设计了一个实验方案，例如研究在休息期间刚度损失和性能恢复的范围和动力学。最大恢复范围取决于先前应用的循环数。恢复不是永久的，在反复疲劳序列下，刚度的损失会加速。损失速度：刚度似乎是一种损坏指标。根据标本先前（或未曾）经受过更激进的征服的事实，它的演变有所不同。这指出了这样的事实，即先前的加载混合了“保持在内存中”。

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