A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effects of Additives on the Performance Properties of Warm Mix Asphalt with Reclaimed Asphalt Pavement
https://orcid.org/http://orcid.org/0000-0003-4436-5661
Using laboratory performance tests, this study evaluated the mixtures’ moisture sensitivity, permanent deformation, resistance to fatigue, and durability of the reclaimed asphalt pavement (RAP) in warm mix asphalt. Hot mix asphalt (HMA) and warm mix asphalt (WMA) included in the experiment were designed using different RAP mixture proportions (0, 20, 40, and 60%) in comparison with HMA. Chemical additive, foaming additive, and polymer additive for the asphalt were the main components of concoction for the WMA mixtures produced in this study. The Superpave design method was used to design HMA, WMA, and WMA mixed with the RAP. Types of laboratory performance tests conducted throughout the study were the moisture sensitivity test, the permanent deformation test, the fatigue resistance test, and the Cantabro loss test. Results indicated that all the WMA mixtures had a significantly improved tensile strength ratio (TSR) compared to the HMA mixtures. However, varying the proportion of the RAP incorporated into the RAP mixtures revealed no significant improvement in TSR. The polymer additive could improve the rutting resistance of WMA mixtures as well as increase the mixtures’ resistance to fatigue, compared to the conventional HMA. This was because the mixture with added polymer additive had a greater number of cycles to fatigue failure. By adding a higher percentage of RAP into WMA with foaming additive (40–60% RAP), the mixture’s resistance to fatigue was significantly improved. All additives improved the durability of the mixtures. Adding a higher percentage of RAP, however, resulted in greater loss of mass.
Effects of Additives on the Performance Properties of Warm Mix Asphalt with Reclaimed Asphalt Pavement
https://orcid.org/http://orcid.org/0000-0003-4436-5661
Using laboratory performance tests, this study evaluated the mixtures’ moisture sensitivity, permanent deformation, resistance to fatigue, and durability of the reclaimed asphalt pavement (RAP) in warm mix asphalt. Hot mix asphalt (HMA) and warm mix asphalt (WMA) included in the experiment were designed using different RAP mixture proportions (0, 20, 40, and 60%) in comparison with HMA. Chemical additive, foaming additive, and polymer additive for the asphalt were the main components of concoction for the WMA mixtures produced in this study. The Superpave design method was used to design HMA, WMA, and WMA mixed with the RAP. Types of laboratory performance tests conducted throughout the study were the moisture sensitivity test, the permanent deformation test, the fatigue resistance test, and the Cantabro loss test. Results indicated that all the WMA mixtures had a significantly improved tensile strength ratio (TSR) compared to the HMA mixtures. However, varying the proportion of the RAP incorporated into the RAP mixtures revealed no significant improvement in TSR. The polymer additive could improve the rutting resistance of WMA mixtures as well as increase the mixtures’ resistance to fatigue, compared to the conventional HMA. This was because the mixture with added polymer additive had a greater number of cycles to fatigue failure. By adding a higher percentage of RAP into WMA with foaming additive (40–60% RAP), the mixture’s resistance to fatigue was significantly improved. All additives improved the durability of the mixtures. Adding a higher percentage of RAP, however, resulted in greater loss of mass.
Effects of Additives on the Performance Properties of Warm Mix Asphalt with Reclaimed Asphalt Pavement
https://orcid.org/http://orcid.org/0000-0003-4436-5661
Using laboratory performance tests, this study evaluated the mixtures’ moisture sensitivity, permanent deformation, resistance to fatigue, and durability of the reclaimed asphalt pavement (RAP) in warm mix asphalt. Hot mix asphalt (HMA) and warm mix asphalt (WMA) included in the experiment were designed using different RAP mixture proportions (0, 20, 40, and 60%) in comparison with HMA. Chemical additive, foaming additive, and polymer additive for the asphalt were the main components of concoction for the WMA mixtures produced in this study. The Superpave design method was used to design HMA, WMA, and WMA mixed with the RAP. Types of laboratory performance tests conducted throughout the study were the moisture sensitivity test, the permanent deformation test, the fatigue resistance test, and the Cantabro loss test. Results indicated that all the WMA mixtures had a significantly improved tensile strength ratio (TSR) compared to the HMA mixtures. However, varying the proportion of the RAP incorporated into the RAP mixtures revealed no significant improvement in TSR. The polymer additive could improve the rutting resistance of WMA mixtures as well as increase the mixtures’ resistance to fatigue, compared to the conventional HMA. This was because the mixture with added polymer additive had a greater number of cycles to fatigue failure. By adding a higher percentage of RAP into WMA with foaming additive (40–60% RAP), the mixture’s resistance to fatigue was significantly improved. All additives improved the durability of the mixtures. Adding a higher percentage of RAP, however, resulted in greater loss of mass.
Effects of Additives on the Performance Properties of Warm Mix Asphalt with Reclaimed Asphalt Pavement
Int. J. Pavement Res. Technol.
Tassiri, Sarawut (author) / Kanitpong, Kunnawee (author) / Sawangsuriya, Auckpath (author)
International Journal of Pavement Research and Technology ; 15 ; 1239-1250
2022-09-01
12 pages
Article (Journal)
Electronic Resource
English
| DOAJ | 2018
| British Library Online Contents | 2009
Evaluating the Performance of Half Warm Asphalt Mixtures Using Reclaimed Asphalt Pavement (RAP)
| DOAJ | 2022