Abstract
The rheological properties of amorphous poly alpha olefin (APAO) modified asphalt binders were investigated through rotational viscometer (RV), dynamic shear rheometer (DSR), and bending beam rheometer (BBR) tests in the laboratory. Two types of APAOs and four percentages of APAO were selected in the study. RV results indicate that the addition of APAO increases the viscosity of modified asphalt binder at high temperatures. DSR measurements show that the elastic property of asphalt binder is enhanced and the failure temperature is improved due to the addition of APAO. In addition, BBR results demonstrate that additional APAO has negative effects on the creep stiffness and creep rate of the modified asphalt binders. The temperature susceptibility of asphalt binder is reduced at high, intermediate, and low temperature zones after adding APAO. Moreover, this study found that APAO K3050 has better modification than K3020 due to its higher viscosity.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
