For you construction people, any stone that is put in as a base course requires a asphalt prime coat to avoid any water infiltration and to keep the internal moisture in the stone base. SO, my arguement is that if the contractor plans on laying asphalt as soon as the base is tight bladed, what purpose does the prime coat serve?
My boss says that you get some bonding and that it prevents future problems such as wicking of the asphalt out of the asphaltic concrete. It could also cause the mat to slide if the top has excessive stone dust. My point is that the prime is added after the tight blading and if is strictly for keeping water in/out, why not just lay directly on the stone but keep it damp to avoid dusting. It saves the contractor money & does not produce an inferior product in my opinion, but I do not have vast experience with asphaltic concrete.
Does anyone know of long term problems? I know that this is not considered a bonding agent between the base and binder, but is there something I'm overlooking? Thanks for any input.
My boss says that you get some bonding and that it prevents future problems such as wicking of the asphalt out of the asphaltic concrete. It could also cause the mat to slide if the top has excessive stone dust. My point is that the prime is added after the tight blading and if is strictly for keeping water in/out, why not just lay directly on the stone but keep it damp to avoid dusting. It saves the contractor money & does not produce an inferior product in my opinion, but I do not have vast experience with asphaltic concrete.
Does anyone know of long term problems? I know that this is not considered a bonding agent between the base and binder, but is there something I'm overlooking? Thanks for any input.