Pisophalt is a term used to refer to a type of bituminous mixture commonly used in road construction and pavement surfacing. It is a specific type of asphalt that contains a high proportion of crushed stones or aggregates, typically around 0.5 to 2.5 inches in size, mixed with a binder that is primarily made up of bitumen.
The term "pisophalt" derives from the Greek words "piso," meaning stone, and "asphaltos," meaning pitch or bitumen. This construction material is widely chosen for its durability, strength, and resistance to wear and tear. Its composition ensures that it can withstand heavy traffic loads, adverse weather conditions, and prolonged exposure to sunlight and moisture.
Pisophalt is typically manufactured by heating and combining ingredients such as bitumen and aggregates in specific ratios. The process involves heating the bitumen to reduce its viscosity allowing it to coat and bond the aggregates together effectively. The resulting mixture is then laid and compressed to form a dense and even surface.
One of the primary advantages of pisophalt is its ability to provide skid resistance and increased road safety by offering better grip and traction for vehicles. Additionally, it is known for its excellent water and weather resistance, preventing damage caused by moisture infiltration and reducing the need for frequent maintenance.
Overall, pisophalt is a durable and versatile material extensively used in the construction industry for road surfaces due to its excellent physical and chemical properties, ensuring high performance and longevity.
