FTIR Analysis of Aging of Binder Modified with Chromium Waste Generated from Leather Industry

Siksha Swaroopa Kar*, Pramod Kumar Jain**, G. Sekaran***
* Scientist, Flexible Pavement Division, CSIR – Central Road Research Institute, Delhi, India.
** Ex-Chief Scientist, CSIR – Central Road Research Institute, New Delhi, India.
*** Ex-Chief Scientist, CSIR – Central Leather Research Institute, Chennai, India.
Periodicity:July - September'2016
DOI : https://doi.org/10.26634/jms.4.2.8127

Abstract

Bitumen is a visco-elastic material, and primary requirement for flexible pavement construction. Elementally, bitumen is around 95% carbon and hydrogen, containing about 85% of hydrogen and 8% of carbon, and up to 5% sulfur, 1% nitrogen, 1% oxygen and 2000 ppm metals. It is composed mainly of highly condensed polycyclic aromatic hydrocarbons. Fourier Transform Infrared (FTIR) microscope is used for studying the hydrocarbon composition of bitumen. With the addition of different modifiers, the required properties of bitumen for road construction is improved. In this study, waste generated from leather industry is converted into non hazardous form which is used as a modifier to the bitumen. FTIR measurements were conducted for obtaining the microstructure distribution of neat and modified bitumen. Meanwhile, the short-term and long-term aging processes of bitumens are simulated by Rolling Thin Film Oven (RTFO) and Pressure Aging Vessel (PAV) tests. Sulfoxide and carbonyl index were calculated for the aged and neat binders and it has been observed that, the rate of oxidation is faster in neat bitumen compared to modified binder.

Keywords

RTFOT, PAV, FTIR, CSM.

How to Cite this Article?

Kar, S.S., Jain, P. K., and Sekaran, G. (2016). FTIR Analysis of Aging of Binder Modified with Chromium Waste Generated from Leather Industry. i-manager’s Journal on Material Science, 4(2), 24-29. https://doi.org/10.26634/jms.4.2.8127

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