| abstract |
The present invention provides a modified asphalt mortar and a preparation method and application thereof. The modified asphalt mortar includes asphalt, mineral powder and modified regenerated polymer fibers, and the modified regenerated polymer fibers are prepared by the following methods : The regenerated polymer fibers are soaked and cleaned with deionized water and organic solvent in turn, then dried, and the dried regenerated polymer fibers are subjected to plasma treatment; the plasma treated regenerated polymer fibers and silane coupling agent Carry out the grafting reaction in the mixed solution of deionized water and absolute ethanol; then carry out the polycondensation reaction with tetraethyl orthosilicate in the mixed solution of ammonia water, deionized water and absolute ethanol. In the present invention, the regenerated polymer fiber is grafted and modified with silica to obtain the modified regenerated polymer fiber, which has high heat resistance and toughness, so that the modified asphalt mortar containing the modified regenerated polymer fiber has good performance. It can prolong the service life of asphalt pavement and can be used in more harsh environments. |