Special grouting material for rut-resistant composite pavement and preparation method of special grouting material

The invention discloses an anti-rut composite grouting material special for a pavement and a preparation method thereof. The anti-rut composite grouting material comprises ordinary Portland cement, fly ash, glass beads, aromatic oil, a water reducing agent, a retarder, redispersible latex powder, a water-retaining agent, a defoaming agent, an expanding agent, cellulose ether and water glass. The preparation method comprises the following steps: mixing the ordinary Portland cement, the fly ash, the glass beads, the cellulose ether, the water reducing agent, the retarder, the redispersible latex powder and the expanding agent to prepare a first mixture; mixing the aromatic hydrocarbon oil, the water-retaining agent, the defoaming agent and the water glass to obtain a second mixture, and independently packaging the first mixture and the second mixture to obtain the grouting material. The grouting material has excellent fluidity and small shrinkage deformation under the condition of ensuring a reasonable water ce