Continuous extrusion molded ultra-high performance cement-based tile and preparation process thereof

The invention discloses an ultra-high-performance cement-based tile formed by continuous extrusion. The ultra-high-performance cement-based tile is prepared from cement, silica fume, mineral powder, fly ash beads, modified machine-made sand, steel fibers, a composite modified component, a water reducing agent, a shrinkage compensating component, cellulose ether and water as main raw materials. The composite modified component comprises nano magnesium aluminum silicate, graphite powder and high-molecular water-absorbent resin; the modified machine-made sand is subjected to ball milling, screening and hydrophobic modification. According to the invention, an ultra-high performance concrete formula system is applied to preparation of the super cement-based tile, and modification means such as cellulose ether, modified machine-made sand, a composite modified component and a shrinkage compensating component are combined, so that on the premise of ensuring a continuous extrusion molding effect, the mechanical proper