Research on the Necessity of Carrier in Anti-Freeze Material

The role of carrier in anti-freeze material is studied through a physical adsorption test to confirm the optimum salted carrier. The influence of carrier on slow-release property of anti-freeze material and salt-releasing in asphalt mixture was investigated by a conductivity test. The microstructure of anti-freeze material with or without carrier was observed with SEM. In addition, the road performance of asphalt mixture with or without carrier was compared. Results show that the slow-release property of anti-freeze material increases and the salt-releasing speed in asphalt mixture reduces with the addition of carrier. However, asphalt mixture without carrier has low water stability and does not meet the code requirements. The research shows that the carrier in anti-freeze material can enhance the durability of the anti-freeze pavement and can be used as a good filler to improve the road performance of the anti-freeze asphalt concrete.