Hot Mix Warm Lay (HMWL)
It's an engineered mixture of aggregate, or stones and sand, with liquid asphalt cement, a petroleum product. Varying sizes of aggregates are heated, then mixed, in exact proportions, with asphalt cement that has been liquefied at about 300 degrees. While the mixture is still hot, it is delivered to your roadway and paved on top of a base or subgrade that has already been prepared. Very soon after paving, the mixture cools and hardens and you can drive on it right away.
Nova chip is an ultrathin, bonded, gap-graded wearing course placed by a specialized machine in one pass. The process is applied using a self-priming paver. This exclusive pavement process applies an ultrathin, gap-graded hot mix wearing course over a polymer rich asphalt emulsion. The process rapidly secures the Nova Chip to the existing surface and allows for minimal traffic delays.