Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rheological properties of dioctyl adipate-modified asphalt binder
By referring to the successful application of a cold-resistant plasticizer in the plastic industry, dioctyl adipate (DOA) plasticizer was selected to improve the low-temperature performance of asphalt. Dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests were conducted to analyse the high and low temperature performance of plasticizer-modified asphalt binder. The residual creep rate ratio was put forward to evaluate the improvement effect of the anti-aging performance of asphalt binder. The rheological characteristics analysis shows that DOA could increase the viscous components in asphalt binder. However, with the increase of plasticizer content to 3.0%, the creep rate increased by 35% and the creep stiffness decreased by 39% at −24°C. The low temperature performance of DOA modified asphalt binder was improved by 30%. The residual creep rate ratio of the plasticizer-modified asphalt binder was more than 15% higher than base asphalt at the same temperature and softening point increment was 22.5% lower than base asphalt which means that the anti-aging performance was improved. Comprehensive analysis of the high and low temperature performance of DOA modified asphalt shows that the optimum content is 3.0%. Fourier-Transform Infrared Spectroscopy (FT-IR) indicates that the plasticizer and asphalt binder mainly undergo a physical blending reaction.
Rheological properties of dioctyl adipate-modified asphalt binder
By referring to the successful application of a cold-resistant plasticizer in the plastic industry, dioctyl adipate (DOA) plasticizer was selected to improve the low-temperature performance of asphalt. Dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests were conducted to analyse the high and low temperature performance of plasticizer-modified asphalt binder. The residual creep rate ratio was put forward to evaluate the improvement effect of the anti-aging performance of asphalt binder. The rheological characteristics analysis shows that DOA could increase the viscous components in asphalt binder. However, with the increase of plasticizer content to 3.0%, the creep rate increased by 35% and the creep stiffness decreased by 39% at −24°C. The low temperature performance of DOA modified asphalt binder was improved by 30%. The residual creep rate ratio of the plasticizer-modified asphalt binder was more than 15% higher than base asphalt at the same temperature and softening point increment was 22.5% lower than base asphalt which means that the anti-aging performance was improved. Comprehensive analysis of the high and low temperature performance of DOA modified asphalt shows that the optimum content is 3.0%. Fourier-Transform Infrared Spectroscopy (FT-IR) indicates that the plasticizer and asphalt binder mainly undergo a physical blending reaction.
Rheological properties of dioctyl adipate-modified asphalt binder
Fu, Zhen ( Autor:in ) / Shi, Ke ( Autor:in ) / Ma, Feng ( Autor:in ) / Song, Rui-meng ( Autor:in ) / Chen, Li ( Autor:in ) / Dai, Jia-sheng ( Autor:in ) / Shen, Wan-qing ( Autor:in )
International Journal of Pavement Engineering ; 23 ; 2644-2653
03.07.2022
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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