Low and high temperature characteristics of compounded and modified bitumens
Teltayev B. Radovskiy B. Seilkhanov T. Oliviero Rossi C. Amirbayev E.
5 September 2022Elsevier B.V.
Colloids and Surfaces A: Physicochemical and Engineering Aspects
2022#648
In the paper the high and low temperature characteristics are evaluated for a blown road bitumen compounded with tar and modified with SBS and Elvaloy polymers using experimental and calculation methods. The bitumens stiffness master curves are constructed and approximated using the principle of temperature-time superposition; graphs are constructed for temperature dependences of loss modulus and relaxation times spectra of bitumens. Viscosity, activation energy, modal relaxation time and rut resistance indicator of the bitumens are determined. The obtained positive effects of compounding and modification using a new sealed reactor, the correct processing conditions for modification and microscopic control are explained on the basis of a comparative analysis of the chemical composition for virgin, compounded and modified bitumens.
Bitumen , Compounding , Elvaloy , Fluorescence microscopy , FTIR spectroscopy , Modification , NMR spectroscopy , SARA fractions , SBS , Tar
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Kazakhstan Highway Research Institute, Kazakhstan
Radnat Consulting, Irvine, CA, United States
Department of Chemistry and Biotechnology, Sh. Ualikhanov Kokshetau University, Kazakhstan
Department of Chemistry and Chemical Technologies, University of Calabria, Italy
Kazakhstan Highway Research Institute
Radnat Consulting
Department of Chemistry and Biotechnology
Department of Chemistry and Chemical Technologies
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