A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rutting Resistance of Stabilized Mixes Using Asphalt Emulsion and Asphaltenes
https://orcid.org/http://orcid.org/0000-0002-1710-029X
Asphalt emulsion is one of the most common materials used in the pavement industry for surface treatment and other applications such as stabilization of pavement base course. Because asphalt emulsions do not require heating at high temperatures for these applications, this feature makes it environmentally friendly due to energy savings and provide safer working conditions by eliminating dangerous toxic fumes. This study investigates the application of using asphaltenes derived from Alberta oil sands to modify asphalt emulsion for base course layer application. Asphaltenes is a waste material of insignificant value with no notable applications in the pavement industry. The amount of asphaltenes to be added for asphalt emulsion modification is determined in the present study through the Marshall stability test, indirect tensile strength test, and wheel tracking test. Asphaltenes from two different sources are used for the asphalt emulsion modification. The modified asphalt emulsion is cured using a low-temperature evaporation technique to recover the asphalt residue. The rheological properties of recovered residue from modified asphalt emulsions are evaluated at high temperatures using a dynamic shear rheometer (DSR). The results indicate that the asphaltenes from both sources significantly increase the Marshall stability and indirect tensile strength of the mixes. The rutting resistance of the modified mixes from the wheel tracking test is found to improve significantly by increasing the number of passes by more than 200% compared to the control sample. Furthermore, the modified asphalt emulsion residues show an improvement in rheological properties at high temperatures.
Rutting Resistance of Stabilized Mixes Using Asphalt Emulsion and Asphaltenes
https://orcid.org/http://orcid.org/0000-0002-1710-029X
Asphalt emulsion is one of the most common materials used in the pavement industry for surface treatment and other applications such as stabilization of pavement base course. Because asphalt emulsions do not require heating at high temperatures for these applications, this feature makes it environmentally friendly due to energy savings and provide safer working conditions by eliminating dangerous toxic fumes. This study investigates the application of using asphaltenes derived from Alberta oil sands to modify asphalt emulsion for base course layer application. Asphaltenes is a waste material of insignificant value with no notable applications in the pavement industry. The amount of asphaltenes to be added for asphalt emulsion modification is determined in the present study through the Marshall stability test, indirect tensile strength test, and wheel tracking test. Asphaltenes from two different sources are used for the asphalt emulsion modification. The modified asphalt emulsion is cured using a low-temperature evaporation technique to recover the asphalt residue. The rheological properties of recovered residue from modified asphalt emulsions are evaluated at high temperatures using a dynamic shear rheometer (DSR). The results indicate that the asphaltenes from both sources significantly increase the Marshall stability and indirect tensile strength of the mixes. The rutting resistance of the modified mixes from the wheel tracking test is found to improve significantly by increasing the number of passes by more than 200% compared to the control sample. Furthermore, the modified asphalt emulsion residues show an improvement in rheological properties at high temperatures.
Rutting Resistance of Stabilized Mixes Using Asphalt Emulsion and Asphaltenes
https://orcid.org/http://orcid.org/0000-0002-1710-029X
Asphalt emulsion is one of the most common materials used in the pavement industry for surface treatment and other applications such as stabilization of pavement base course. Because asphalt emulsions do not require heating at high temperatures for these applications, this feature makes it environmentally friendly due to energy savings and provide safer working conditions by eliminating dangerous toxic fumes. This study investigates the application of using asphaltenes derived from Alberta oil sands to modify asphalt emulsion for base course layer application. Asphaltenes is a waste material of insignificant value with no notable applications in the pavement industry. The amount of asphaltenes to be added for asphalt emulsion modification is determined in the present study through the Marshall stability test, indirect tensile strength test, and wheel tracking test. Asphaltenes from two different sources are used for the asphalt emulsion modification. The modified asphalt emulsion is cured using a low-temperature evaporation technique to recover the asphalt residue. The rheological properties of recovered residue from modified asphalt emulsions are evaluated at high temperatures using a dynamic shear rheometer (DSR). The results indicate that the asphaltenes from both sources significantly increase the Marshall stability and indirect tensile strength of the mixes. The rutting resistance of the modified mixes from the wheel tracking test is found to improve significantly by increasing the number of passes by more than 200% compared to the control sample. Furthermore, the modified asphalt emulsion residues show an improvement in rheological properties at high temperatures.
Rutting Resistance of Stabilized Mixes Using Asphalt Emulsion and Asphaltenes
Int. J. Pavement Res. Technol.
Basavarajappa, Manjunath (author) / Kamran, Farshad (author) / Bala, Nura (author) / Hashemian, Leila (author)
International Journal of Pavement Research and Technology ; 15 ; 496-508
2022-03-01
13 pages
Article (Journal)
Electronic Resource
English
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