Petroleum Industry | Analysis of bituminous binder samples using the FTIR spectrometer Lyza 7000
Molecular analysis of unknown bituminous binders from asphalt granulates using Fourier Transform Infrared (FTIR) spectroscopy allows for the production of binders with tailored properties, contributing to sustainable production. Additionally, the FTIR spectrometer supports cost-effective and environmentally friendly solvent usage.
Asphalt, one of the world’s most essential materials for road construction, is composed of aggregates and the binder bitumen. The properties of bitumen can be modified with the addition of various additives. In the future, additives will not only improve binder properties but also help to lower paving temperatures. Over the past decades, additives such as styrene-butadiene-styrene (SBS) in polymer-modified bitumen have been used to enhance binder characteristics like fatigue resistance, deformation resistance, and cold flexibility. Waxes have also been employed for many years to improve workability. As asphalt granulates with diverse additives continue to be developed, they must be accurately, quickly, and easily characterized before being used in temperature-reduced asphalts.
This application report details the sample preparation, application to the measurement cell, measurement settings, and cleaning procedures for successfully analyzing bitumen samples with the Lyza 7000 spectrometer, while minimizing solvent use.
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