Thermal-stability high-toughness road cement concrete and preparation method thereof

The invention discloses thermal-stability high-toughness road cement concrete and a preparation method thereof, and belongs to the technical field of highway engineering. The concrete is prepared from the following components in parts by weight: 260 to 320 parts of cement, 20 to 30 parts of ceramic powder, 40 to 60 parts of fly ash, 1000 to 1100 parts of gravel, 450 to 480 parts of sand, 300 to 340 parts of a carbon nanotube reinforced expanded vermiculite composite material, 0.8 to 1.2 parts of modified sisal fiber, 3 to 6 parts of modified rubber powder, 5 to 7 parts of a water reducing agent and 160 to 170 parts of water. According to the invention, the carbon nanotube reinforced expanded vermiculite composite material, the modified sisal fiber, the modified rubber powder, the ceramic powder and other materials with excellent thermal stability, crack resistance and toughness are cooperated; the road cement concrete provided by the invention has high thermal stability, high toughness and excellent crack res