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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 >A NEW HIGH-FREQUENCY TORSIONAL RHEOMETER FOR BITUMINOUS BINDERS
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A NEW HIGH-FREQUENCY TORSIONAL RHEOMETER FOR BITUMINOUS BINDERS

机译：一种用于有色粘合剂的新型高频扭转流变仪

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摘要

When a rod is performing torsional vibrations at one of its resonance frequencies, any interaction with a viscoelastic medium will change both its resonance frequency and its damping characteristics. By measuring this change, modulus, phase angle, elastic and viscous constants of a bituminous binder can be obtained. The new High-Frequency Torsional resonance Rheometer (HFTR) developed at ETH Zuerich and presented in this study is based on this principle. In comparison to prevailing rheometers, the HFTR is inexpensive and has various technical advantages. It can be embedded in the binder or placed on its surface and is suited for laboratory and field measurements. High frequencies in the 1 to 60 kHz range allow the measurements to be unaffected by traffic induced low frequencies, which makes it ideal for field measurements. The HFTR can also be used for continuous monitoring of binder aging effects or as a portable fingerprinting tool for materials characterization in the laboratory. In addition, it allows continuous measurements during binder production. This study focuses on the measurement technique using the HFTR for laboratory experiments involving conditioning of bitumen in a high temperature oven. Furthermore measurement uncertainties and practical examples are discussed.
机译：当杆以其共振频率之一进行扭转振动时，与粘弹性介质的任何相互作用都会改变其共振频率和阻尼特性。通过测量该变化，可以获得沥青粘合剂的模量，相角，弹性和粘性常数。 ETH Zuerich开发并在这项研究中介绍的新的高频扭转共振流变仪（HFTR）就是基于这一原理。与流行的流变仪相比，HFTR价格便宜且具有各种技术优势。它可以嵌入在活页夹中或放置在其表面，适用于实验室和现场测量。 1至60 kHz的高频范围使测量不受交通诱导的低频影响，因此非常适合现场测量。 HFTR还可以用于连续监测粘合剂的老化效果，或用作实验室中材料表征的便携式指纹识别工具。此外，它允许在粘合剂生产过程中进行连续测量。这项研究的重点是使用HFTR的测量技术，用于涉及在高温烤箱中对沥青进行调理的实验室实验。此外，还讨论了测量不确定度和实际示例。

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