| abstract |
The present invention relates to a kind of road and bridge filleting methods and filleting pitch to combine, and belongs to road and bridge technical field.The problem of present invention solves filleting pitch used in distress in concrete when in use, not high with the bond strength of concrete, is easy to appear intensity decline, softening when long-term work at high temperature；Using a new technical concept, it is directly in contact with concrete using the first asphalt material modified, it wherein include the filler of surface grafting in the first asphalt material, these fillers are easy in insertion concrete, improve the bond strength with concrete cement, the second pitch is inserted in the inside of the first pitch again, the integrality of filleting may be implemented. |