Evaluation of elevated temperature properties of asphalt cement modified with aluminum oxide and calcium carbonate nanoparticles

Building up Efficient and Sustainable Transport Infrastructure 2017

Ali, Shaban Ismael Albrka^1,2 ; Ismail, Amiruddin^2 ; Almansob, Ramez A^3 ; Alhmali, Dhawo Ibrahim^2

Civil Engineering Department, Near East University, Near East Boulevard, North Cyprus, Nicosia, Mersin 10

99138, Turkey^1

Department of Civil and Structural Engineering, Universiti Kebangsaan Malaysia, Pekan Bangi, Bangi, Selangor

43600, Malaysia^2

Faculty of Engineering, Technology and Built Environment, UCSI University, Cheras, Kuala Lumpur

56000, Malaysia^3

关键词: Alternative materials;    Aluminum oxide nanoparticles;    Dynamic shear rheometer;    Elevated temperature;    Modifier concentration;    Rheological property;    Rutting parameters;    Temperature properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/236/1/012008/pdf
DOI  :  10.1088/1757-899X/236/1/012008

来源: IOP

【 摘 要 】

Higher temperature properties of the asphalt cement have been characterized before and after modification using dynamic shear rheometer (DSR) and viscosity testing. In this study, calcium carbonate nanoparticles (CaCO3) and aluminum oxide nanoparticles (Al2O3) have been added to the base asphalt cement with concentrations of 3, 5 and 7%.wt by the weight of the asphalt cement. The increase of CaCO3and Al2O3content has significant effect on the properties of asphalt cement. The viscosity of the modified asphalt cement increased up to 90 and 108% respectively compared to the base asphalt cement. In addition, the results showed that both modifiers have great storage stability and compatibility at elevated temperature. The evaluation of the rheological properties of asphalt cements revealed that the stiffness of the modified samples improved with additional increase of the modifier concentration of up to 5%, which indicates better resistance to rutting parameter. The enhancement was up to 388.89% for Al2O3and 74.07% for CaCO3. As a result, the usage of CaCO3and Al2O3nanoparticles can be considered as appropriate alternative materials to modify asphalt cement.