High-toughness fiber water-stable phosphogypsum regenerated base material and preparation method thereof

The invention relates to a high-toughness fiber water-stable phosphogypsum regenerated base material and a preparation method thereof. The base material comprises the following components in parts by mass: 100 parts of asphalt pavement reclaimed materials and 35-55 parts of ardealite, 12 to 16 parts of cement; 0.1 to 0.3 part of fiber; 1-3 parts of a modifier; and 1.5-3 parts of a stabilizer. The preparation method comprises the following steps: carrying out dry mixing on a part of the asphalt pavement reclaimed material, a part of the ardealite and a part of the cement, and uniformly mixing; adding the fiber and continuously stirring uniformly; adding the residual asphalt pavement reclaimed material, phosphogypsum, cement, a modifier and water, and quickly mixing; and adding a stabilizer, uniformly mixing, and determining the optimal moisture content and the maximum dry density according to an indoor compaction test, thereby obtaining the high-toughness fiber water-stable phosphogypsum regenerated base mater