Quality Control of Polymer Modified Bitumen Application Note

This application note is focused on the quality control of polymer modified bitumen (PMB) using Attenuated Reflectance Fourier Transform Infrared (ATR-FT-IR) Spectroscopy. It describes the importance of ensuring the correct composition of bitumen, particularly with the inclusion of polymer additives such as styrene-butadiene-styrene (SBS). The document outlines the methodology for analyzing bitumen samples with a Bruker ALPHA II FT-IR spectrometer, detailing the detection and quantification of SBS and other additives. The results section presents the characteristic peaks observed in FT-IR spectra, which confirm the presence of SBS and indicate the chemical composition of the bitumen. Furthermore, the note discusses the application of official standard methods for generating calibration curves to quantitatively determine SBS content. The ATR-FT-IR technique is highlighted for its capability to monitor polymer dispersion and ensure compliance with industry specifications, ultimately contributing to improved road performance and longevity.