Porous Asphalt Pavement is a type of Asphalt. Asphalt is a black, sticky substance that occurs naturally but can also be refined from crude oil. Blacktop, also referred to as asphalt concrete, is a mixture of sand, stone, and gravel used in the construction of roads and pavements. Asphalt pavement is the most preferred way of building roads as it is cheap, durable, and doesn’t take much time to complete. Actually, more than 90 percent of the paved surface (roads, parking lots, driveways, airport runways, etc.) in the United States are made of asphalt pavement. Asphalt pavement’s superiority to its alternatives is exhibited by its quiet, smooth ride, environmental friendliness, and speed of construction.
Typically, pavements are designed to allow runoff water