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Abstract for presentation (Poster or Podium) with a Paper in the Conference Proceedings

Highway Pavements

Characterizing the Aging Behavior of Textile Pyrolysis Oil Modified Bitumen using FTIR Spectroscopy

Monday, June 17, 2024
10:15 AM - 11:30 AM ET
Room: Galleria
Abstract:

In recent years, there has been an ever-increasing trend of solid waste generation due to commercial and industrial development worldwide.  Different studies were done on using solid waste in bitumen; various materials like rubber, elastomer, and plastomer have been used to modify bitumen in the last decade. Textile waste is one of the major components of municipal solid waste. This study made an effort to modify bitumen using textile pyrolysis oil and test its ageing properties. Because of their unpredictable characteristics, bitumen and modified bitumen have complex rheological and chemical behavior. Pyrolysis oil was made by pyrolyzing textile waste at 400 to 500 °C. Textile Pyrolysis Oil Modified Bitumen (TXPOMB) was made by the addition of 1, 2, and 3% textile pyrolysis oil by weight of the bitumen and mixing in the high shear mixer. The TXPOMB oxidation process was investigated by using Fourier Transform Infrared Spectroscopy (FTIR). Short-term ageing impact on Viscosity Graded 30 (VG30) and TXPOMB was analyzed using the Superpave testing method and standard oven ageing. FTIR spectroscopy was used to examine the chemical composition and short-term ageing of VG30 and TXPOMB bitumen binders. This study calculates aromaticity, aliphaticity, carbonyl indices, and sulphoxide indices from FTIR spectroscopy. It was seen that ageing affects bitumen chemistry.

Learning Objectives:

Attendees can expect to learn the following from this session:
  • Understand TXPO modification with VG30 bitumen and its relevance to solid waste management issue, and the process of pyrolysis oil production and its integration into bitumen.
  • Describe the methods used to assess the short-term ageing impact on both Viscosity Graded 30 (VG30) bitumen and Textile Pyro-Oil Modified Bitumen, including Superpave testing and standard oven ageing.
  • Capable of using FTIR Spectroscopy to examine changes in bitumen chemistry due to ageing and to calculate key indices such as aromaticity, aliphaticity, carbonyl, and sulphoxide indices.