A new high-frequency torsional rheometer for bituminous binders

Title: A new high-frequency torsional rheometer for bituminous binders
Author(s): L. D. Poulikakos, M. B. Sayir, M. N. Partl
Paper category : conference
Book title: Sixth International RILEM Symposium on Performance Testing and Evaluation of Bituminous Materials
Editor(s): M. N. Partl
Print-ISBN: 2-912143-35-7
e-ISBN: 2912143772
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 59 - 65
Total Pages: 7
Nb references: 6
Language: English

Abstract: 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 Zürich 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.

Online publication: 2003-03-02
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143772.004

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