Asphalt concrete penetration test piece sealing material and preparation method thereof

The invention belongs to the technical field of asphalt concrete permeability tests, and discloses an asphalt concrete permeability test specimen sealing material and a preparation method thereof, and the preparation method comprises the following steps: uniformly mixing molten paraffin and asphalt according to a mass ratio of 1: (0.81-2.34) to obtain a mixture; the stone powder accounts for 15-25% of the total mass of the mixture, the fine aggregate accounts for 40-50% of the mass of the stone powder, the asphalt concrete permeability test specimen sealing material with the melting point being 60-85 DEG C is obtained, and the stone powder and the fine aggregate are different in particle size. The prepared sealing material can seal a gap between a test piece and a test mold at the temperature not lower than the melting point temperature, the risk of scalding an operator can be reduced, and pollution of a gap pouring material to the bottom surface of the test piece can be avoided. In addition, the paraffin is