How cold-mix asphalt actually works
Conventional hot-mix asphalt relies on temperature: at 140–160 °C the bitumen binder is fluid enough to coat the aggregate, so when it cools on the road the bond locks together. Cold-mix replaces that thermal mechanism with chemistry. A co-polymer binder coats the aggregate at factory temperature and stays workable in the bag.
When you compact the mix in the pothole, the impact and pressure activate the polymer system. The binder grips the aggregate, the aggregate interlocks with the void's walls, and the whole patch chemically bonds to the surrounding pavement. The result is a permanent, structural repair laid without any heat input at all.




