Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rheological Comparisons of Terminally Blended and Laboratory Blended Ground Tire Rubbers
Ground tire rubber (GTR) has been used for several decades to improve the performance characteristics of asphalt pavement in the USA. It is well known that the engineering properties of asphalt pavement containing GTR are dependent on the rubber size, type, concentration, and etc. Many researchers found that the utilization of a proper GTR in asphalt pavement can help the reduction of the cost and extend the pavement service life with some other benefits, such as environmental protection, solid waste reduction, and so on. However, the challenges to produce the GTR asphalt pavements are to need a field blended system to yield the rubberized asphalt binder to mix with aggregate because the rubberized asphalt binder generally has a serious segregation problem during the storage procedure. This system is costly and the quality of the modified binder is generally dependent on various factors, and thus it is not easy to control. Nowadays, a promising technology is to produce GTR binder in the asphalt plant and terminally blended GTR binders are shipped to asphalt mixing plant as the conventional SBS binders without any additional treatments. This technology is broadly being used in different regions of USA recently. However, it is necessary to explore the performance properties of terminally blended GTRs compared to the traditional laboratory blended GTRs. In this study, one base binder (PG 64-16) was used to produce terminally blended GTRs and laboratory blended GTRs, originally from Nevada, USA. The test results showed that the rheological properties (viscosity, failure temperature, phase angle, etc.) of terminally blended GTRs are comparable with these laboratory blended GTRs. Therefore, it is recommended to use terminally blended GTRs in the real world.
Rheological Comparisons of Terminally Blended and Laboratory Blended Ground Tire Rubbers
Ground tire rubber (GTR) has been used for several decades to improve the performance characteristics of asphalt pavement in the USA. It is well known that the engineering properties of asphalt pavement containing GTR are dependent on the rubber size, type, concentration, and etc. Many researchers found that the utilization of a proper GTR in asphalt pavement can help the reduction of the cost and extend the pavement service life with some other benefits, such as environmental protection, solid waste reduction, and so on. However, the challenges to produce the GTR asphalt pavements are to need a field blended system to yield the rubberized asphalt binder to mix with aggregate because the rubberized asphalt binder generally has a serious segregation problem during the storage procedure. This system is costly and the quality of the modified binder is generally dependent on various factors, and thus it is not easy to control. Nowadays, a promising technology is to produce GTR binder in the asphalt plant and terminally blended GTR binders are shipped to asphalt mixing plant as the conventional SBS binders without any additional treatments. This technology is broadly being used in different regions of USA recently. However, it is necessary to explore the performance properties of terminally blended GTRs compared to the traditional laboratory blended GTRs. In this study, one base binder (PG 64-16) was used to produce terminally blended GTRs and laboratory blended GTRs, originally from Nevada, USA. The test results showed that the rheological properties (viscosity, failure temperature, phase angle, etc.) of terminally blended GTRs are comparable with these laboratory blended GTRs. Therefore, it is recommended to use terminally blended GTRs in the real world.
Rheological Comparisons of Terminally Blended and Laboratory Blended Ground Tire Rubbers
Xiao, Feipeng (Autor:in) / Hou, Xiangdao (Autor:in) / Xu, Ouming (Autor:in) / Amirkhanian, Serji N. (Autor:in) / Wen, Yongyue (Autor:in)
2015 International Symposium on Frontiers of Road and Airport Engineering ; 2015 ; Shanghai, China
22.10.2015
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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