HMA pavement cannot be placed on which of the following surfaces?

HMA pavement cannot be placed on surfaces that contain water because water can severely affect the integrity and performance of the asphalt layer being applied. When HMA is placed on a wet surface, the moisture can hinder the proper bonding between the asphalt and the substrate. This bond is crucial for the pavement's strength and durability. If there is water on the surface, it can lead to stripping, which is the separation of the asphalt binder from the aggregate, ultimately compromising the pavement's structural integrity.

Additionally, water on the surface can create a slick condition, which can lead to safety issues during the installation process. It may also prevent the HMA from achieving the desired compaction, as water can create air voids within the mixture that will weaken the overall pavement performance. To ensure the longevity and effectiveness of the asphalt pavement, it is essential to apply it only on clean, dry surfaces.