Modular mobility investigation of polymer binder bitumen

International Scientific Conference of Young Scientists: Advanced Materials in Construction and Engineering

材料科学;土木建筑工程;工业技术

Ayupov, D.^1 ; Makarov, D.^1 ; Murafa, A.^1 ; Khozin, V.^1 ; Khakimullin, Y.^2 ; Sundukov, V.^3 ; Khakimov, A.^3 ; Gizatullin, B.^4

Kazan State University of Architecture and Engineering, Department of Technology of Building Materials and Construction, Kazan

420043, Russia^1

Kazan National Research Technological University, Department of Chemistry and Processing Technology of Elastomers, Kazan

420015, Russia^2

Kazan State University of Architecture and Engineering, Physics Department, Kazan

420043, Russia^3

Kazan Federal University, Department of Physics of Molecular Systems, Kazan

420000, Russia^4

关键词: Devulcanization;    Equilibrium swelling;    Low temperature characteristics;    Molecular mobility;    Petroleum bitumens;    Polymer binders;    Softening points;    Technical properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/71/1/012003/pdf
DOI  :  10.1088/1757-899X/71/1/012003

来源: IOP

【 摘 要 】

This paper is aimed to obtain polymer binder bitumen for the road applications with improved properties. Objectives included studying the degradation of crumb rubber during devulcanization in melted petroleum bitumen for its modification and resulted structural properties of bitumen. Using equilibrium swelling technique reduced density of the polymer chains was observed and analysis of sol-gel fractions showed a significant decrease in gel fraction. Under selected method of devulcanization 64% of the backbone rubber remained. With The H1NMR relaxation method the reduction of bitumen molecular mobility was observed due to thickening of its light fractions. The effectiveness of devulcanization was optimized using a new agent in a powder form and vacuum application. The developed binder has an improved spectrum of physical and technical properties such as softening point temperature, hardness, elasticity, frost resistance, low temperature characteristics.