Rheological Evaluation of Bitumen Binders with Polystyrene Waste

The principal focus of the current study is to evaluate the influence of polystyrene [as a polystyrene solution (PS)] to resolve the traditional limitations of some of the physical parameters, such as less elastic recovery (ER), storage instability and high temperature mixing requirements for bitumi...

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Bibliographic Details
Published in:International journal of pavement research & technology 2023-11, Vol.16 (6), p.1352-1363
Main Authors: Mahida, Supriya, Shah, Yogesh U., Sangita, Mehta, Prakash
Format: Article
Language:English
Subjects:
Bitumens
Building Construction and Design
Civil Engineering
Creep recovery
Elastic limit
Elastic recovery
Emission analysis
Energy dispersive X ray analysis
Engineering
Fourier transforms
Functional groups
High temperature
Infrared spectroscopy
Original Research Paper
Parameters
Physical properties
Polystyrene resins
Rheological properties
Rheology
Rheometers
Softening
Softening points
Spectrum analysis
Stability analysis
Stability tests
Storage stability
Structural Materials
Viscosity
X ray analysis
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Summary:The principal focus of the current study is to evaluate the influence of polystyrene [as a polystyrene solution (PS)] to resolve the traditional limitations of some of the physical parameters, such as less elastic recovery (ER), storage instability and high temperature mixing requirements for bituminous binders. The conventional bitumen VG 30 and four samples of PS modified bitumen were prepared by modifying the conventional bitumen with PS waste using PS solution at different proportions. The physical parameters were studied by performing penetration, softening point, viscosity, elastic recovery and storage stability tests. The Fourier transform infrared spectroscopy (FTIR) test was used to classify the various functional groups present in the binders. The rheological properties were determined by dynamic shear rheometer (DSR) including multiple stress creep recovery (MSCR) and bending beam rheometer (BBR). These spectroscopy and rheological experimental results of PS modified bitumen were compared with conventional bitumen. Field-emission scanning electron microscopy and energy-dispersive X-ray analysis was used to examine the morphology of the bituminous binder. The experimental results indicated that the penetration, softening point, viscosity and storage stability of the modified bitumen with PS improved considerably. FTIR analysis confirms the existence of the styrene in the PS modified bitumen. The ER, DSR, MSCR and BBR tests indicated that this process of modification has a major influence in better the elastic and rheological characteristics of the PS modified bitumen. Overall, the findings showed that PS modified bitumen binders have better performance than conventional bitumen and successfully developed a wet process and a solution based new technique to handle the PS wastage.
ISSN:1996-6814
1997-1400
DOI:10.1007/s42947-022-00201-x