Study on Water Stability of Sasobit~ Warm Mixture Asphalt
Study on Water Stability of Sasobit~ Warm Mixture Asphalt
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发表时间：
2010
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通讯作者：
G. Ping
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作者：
G. Ping
In order to investigate water stability and improved measure of warm mixture asphalt,AC-13C asphalt mixtures were prepared with 3% Sasobit~ content and the optimal compaction temperature was determined according to test results of specimens formed at 4 different compaction temperatures by Marshall method.The general water stability tests and Hamburg wheel-tracking device were used to test the water stability of 4 kinds of asphalt mixtures,which were ordinary asphalt mixture,Sasobit~ asphalt mixture without adding any anti-stripping agent,Sasobit~ asphalt mixture adding liquid anti-stripping agent and Sasobit~ asphalt mixture adding hydrated lime.Test results show that the optimal compaction temperature is about 125 ℃;and compared with ordinary asphalt mixture,the long-term water stability of Sasobit~ asphalt mixture is obviously poor caused by the lower compaction temperature;the addition of either liquid anti-stripping agent or hydrated lime improves the water stability to a great extent;comparatively speaking,addition of hydrated lime is the optimum measure to improve the water stability of Sasobit~ warm mixture asphalt.
