A thin, bonded concrete overlay can improve the load-carrying capacity and rideability of an existing concrete pavement without incurring high replacement costs and causing months of traffic interruption.
Engineers are by nature a conservative lot. Buildings and bridges are designed to withstand loads from the expected and the unexpected. The same is not done when designing pavements: unexpected traffic volumes sabotage many designs.
If you were asked to name the greatest paving advantage of asphalt over concrete, how would you answer? Most likely your answer would be that asphalt is chosen over concrete because the road or highway can be opened to traffic in a matter of hours, versus days for concrete pavements.
