Abstract
The nuclear magnetic resonance (NMR) melting-curve method, employing measurement of the temperature-dependent width of the1H NMR spectrum, was used in a comparative study of softening of various industrial bitumen types (BIT 60 and BIT 90) produced by different manufacturers. Out of three manufacturers involved in the study, only the bitumen samples of one of them exhibited the expected regularity — the NMR melting curves formed two well-defined groups, one belonging to BIT 60-type samples and the other to BIT 90-type, and the BIT 90 samples showed softer melting characteristics. This indicates a reproducible industrial production process and reliable classification into different bitumen types. The NMR melting curves of nominal BIT 60-type samples of the other two manufacturers are scattered irregularly over a large range, extending much beyond the total span of the BIT 60 and BIT 90 curves of the first manufacturer. Hence the classification of these samples into one bitumen type (BIT 60) makes less sense.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
