effects of wma additive on the rheological properties of asphalt binder and high temperature performance grade

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ID: 146213
2015
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Abstract
Sasobit additives with different dosages were added into 70# and 90# virgin asphalt binders to prepare WMA binders. The rheological properties, including G∗ and δ, were measured by using DSR at the temperature ranging from 46°C to 70°C, and the effects of temperature, additive dosage and aging on G∗/sin⁡δ, critical temperature, and H-T PG were investigated. The results indicate that WMA additive improves G∗ but reduces δ, and the improvement on 70# virgin binder is more significant. G∗/sin⁡δ exponentially decreases with the increasing temperature but linearly increases with the increasing additive dosage. Aging effect weakens the interaction between binder and additive but significantly increases the binder’s viscosity; that is why G∗/sin⁡δ is higher after short-term aging. In addition, the critical temperature increases with the increasing additive dosage, and the additive dosage should be more than 3% and 5% to improve H-T PG by one grade for 70# and 90# virgin binder, respectively.
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zhang2015advanceseffects Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Jiupeng Zhang;Guoqiang Liu;Li Xu;Jianzhong Pei
Journal bulletin of the korean chemical society
Year 2015
DOI
10.1155/2015/467891
URL
http://dx.doi.org/10.1155/2015/467891
Keywords
materials of engineering and construction mechanics of materials

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