Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Spectroscopic Evaluation of Recycled Asphalt Pavement Materials
The ongoing Second Strategic Highway Research Program (SHRP2) R06 (B) project titled "Evaluating Applications of Field Spectroscopy Devices to Fingerprint Commonly Used Construction Materials" at the University of Connecticut targets, among the other objectives, the evaluation of oxidation in recycled asphalt pavements (RAP). In particular, the study investigates the effect of the RAP content on the concentration of oxidized functionalities in asphalt by using advanced yet portable and easily interpretable spectroscopic methods. Two types of samples are prepared in the laboratory: binder blends containing 15 to 40 percent weight RAP-binder and loose HMA samples modified by up to 80 percent weight RAP. Spectroscopic measurements are performed using portable attenuated total reflection Fourier transform infrared (ATR FT-IR) spectrometer. Quantitative analysis of the ATR spectra indicates that an increase in RAP content is highly associated with concentration of ketones and sulfoxides in RAP binder. Furthermore, it is possible to determine RAP content based on the analysis of extracted RAP binder.
Spectroscopic Evaluation of Recycled Asphalt Pavement Materials
The ongoing Second Strategic Highway Research Program (SHRP2) R06 (B) project titled "Evaluating Applications of Field Spectroscopy Devices to Fingerprint Commonly Used Construction Materials" at the University of Connecticut targets, among the other objectives, the evaluation of oxidation in recycled asphalt pavements (RAP). In particular, the study investigates the effect of the RAP content on the concentration of oxidized functionalities in asphalt by using advanced yet portable and easily interpretable spectroscopic methods. Two types of samples are prepared in the laboratory: binder blends containing 15 to 40 percent weight RAP-binder and loose HMA samples modified by up to 80 percent weight RAP. Spectroscopic measurements are performed using portable attenuated total reflection Fourier transform infrared (ATR FT-IR) spectrometer. Quantitative analysis of the ATR spectra indicates that an increase in RAP content is highly associated with concentration of ketones and sulfoxides in RAP binder. Furthermore, it is possible to determine RAP content based on the analysis of extracted RAP binder.
Spectroscopic Evaluation of Recycled Asphalt Pavement Materials
Zofka, A. (Autor:in) / Chrysochoou, M. (Autor:in) / Yut, I. (Autor:in)
GeoCongress 2012 ; 2012 ; Oakland, California, United States
GeoCongress 2012 ; 1572-1581
29.03.2012
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Spectroscopic Evaluation of Recycled Asphalt Pavement Materials
| British Library Conference Proceedings | 2012
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