Acid-rain-resistant roadbed material based on waste mud as well as preparation method and application of acid-rain-resistant roadbed material

The invention discloses an acid-rain-resistant roadbed material based on waste slurry and a preparation method and application thereof, the preparation method comprises the following steps: (1) adding a flocculant into the waste slurry, stirring, fully mixing the waste slurry and the flocculant, standing for precipitation, and discharging supernatant to obtain dehydrated waste slurry dried soil; (2) Portland cement, sodium hydroxide, sodium silicate and sodium fluosilicate are added into the waste slurry dried soil and stirred uniformly, the acid rain resistant roadbed material can be prepared, the addition amount of the sodium hydroxide is 0.2%-0.6% of the mass of the waste slurry dried soil, the addition amount of the sodium silicate is 0.8%-1.2% of the mass of the waste slurry dried soil, and the addition amount of the sodium fluosilicate is 0.8%-1.2% of the mass of the waste slurry dried soil. The addition amount of the sodium fluosilicate is 0.1%-0.3% of the mass of the waste mud dry soil. And the treate