文章基本信息

标题：Comparison of Rubber Asphalt with Polymer Asphalt under Long-Term Aging Conditions in Michigan
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作者：Jin, Dongzhao ; Boateng, Kwadwo Ampadu ; Chen, Siyu 等
期刊名称：Sustainability
印刷版ISSN：2071-1050
出版年度：2022
卷号：14
期号：17
页码：1-16
DOI：10.3390/su141710987
语种：English
出版社：MDPI, Open Access Journal
摘要：The objective of this study is to compare the long-term aging performance of dry-processed rubber-modified asphalt mixture with styrene–butadiene–styrene polymer-modified asphalt mixture on heavy traffic volume roads in the wet-freeze environment of Michigan. The rutting performance was evaluated using the Hamburg wheel track device. The disc-shaped compact tension test was used to assess the fracture energy. The dynamic modulus experiment was used to estimate the load and displacement relationship. The asphalt binder properties were evaluated using multiple stress creep recovery and the linear amplitude sweep test. The pavement distresses were evaluated using the pavement mechanistic–empirical design. All three types of asphalt mixture show excellent rutting resistance after long-term aging conditions, while the fracture energy of the rubber mix is 17.1% to 30.5% higher than that of the control mix and 6.8% to 9.1% higher than that of the polymer mix. The rubber and polymer incorporated with the asphalt binder improved the resistance to permanent deformation and improved the fatigue life of the asphalt binder. In summary, the rubberized asphalt technology using the dry process shows better cracking resistance and fatigue life. Therefore, rubberized asphalt using the dry process will exhibit adequate performance when used for high-volume roads in the wet-freeze environment of Michigan.
关键词：dry-processed rubber-modified asphalt mixture; disc-shaped compact tension test; hamburg wheel tracking device; dynamic modulus; multiple stress creep recovery test; linear amplitude sweep test; pavement M-E design