| Most modified asphalt bridge expansion joints existed cracks because of low temperature when they applied in cold areas. Between the bituminous mixture and bridge, the cracks existed also. Analysis on the causes of damage, this paper modified the MEIJIA bitumen materials in order to enhance the low temperature capacity of Bitumen and Bituminous Mixture through the Polymer. Emphasis on the study of low temperature capacity of modified asphalt and bituminous mixture, We utilize reasonable construction craft to avoid the cracks problem between Bituminous Mixture and bridge and give a advance way of small or moderate span bridge expansion joint in low temperature areas. |
