Asphalt

Asphalt is a sticky, black, semi-solid form of petroleum that is commonly used for paving roads, parking lots, and other outdoor surfaces. It is also used in roofing materials, waterproofing, and soundproofing. The production process of asphalt involves mixing asphalt cement (a thick, black liquid) with aggregate (small stones, sand, or gravel). The resulting mixture is heated and then applied while still hot and pliable. Asphalt is durable and can withstand heavy traffic and harsh weather conditions, and it is relatively inexpensive and easy to repair. However, its production process raises some environmental concerns and potential for air pollution. Some alternative paving materials, such as concrete and permeable paving, are becoming more popular as a result