What is Rubberized Asphalt?
A. Rubberized Asphalt is a mixture of up to 2% by weight, of rubber placed in an otherwise conventional asphalt mix. Two main types of Rubberized Asphalt processes are known. One is the Wet system in which the rubber crumb is mixed with the hot aggregate and then the asphalt cement is added to the final product. The second is the Dry system in which the rubber crumb is mixed with the hot aggregate and then the asphalt cement is added to the final product. Another method that Grey County Highways Department has used is the Cold in-place Asphalt system. With this system a coarser rubber crumb is spread on the road and mixed into the newly recycled road by grinding up the existing asphalt surface and adding emulsion and laying the recycled surface back down on the road. The other process that we have used the last three years, is our own Wet/Dry system. This system that we have developed can use up to 4,000 tires per kilometre and is giving us Asphalt pavement which has very minimal crack
