Study on preparation technology of red mud modified asphalt under freeze-thaw cycling by orthogonal test
FU Tao
BAO Huiming
Abstract：In order to study the basic properties and preparation process of red mud modified asphalt in salt refrigeration en-vironment,the freezing and thawing cycles,the concentration of snow melt,the amount of red mud,the size of red mud and the shear time were taken as the influencing factors,and the corresponding factor level was selected. The temperature performance,high temperature performance and low temperature performance of the red mud modified asphalt under freezing and thawing cycle were tested by orthogonal test. The results show that the influence of temperature on the temperature sensitivity of the modified asphalt is:shear time>the number of freeze-thaw cycles>the size of the red mud>the concentration of the snow melt>the amount of red mud;The influence degree on low temperature crack resistance of the red mud modified asphalt is as follows:the number of freez-ing and thawing cycle>the size of red mud>shear time>the amount of red mud>the concentration of snow melt;the influence degree on high temperature stability of red mud modified asphalt material is as follows:the number of freezing and thawing cycles>the concentration of snow melt>shear time> the amount of red mud > the size of red mud.
Keywords：red mud modified asphaltsalt refrigeration cyclepreparation processorthogonal testtemperature sensitivity
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 62-65,69 )