Asphalt is a black, semi-solid, and sticky form of petroleum. It is a refined crude oil product. It is mainly used for paving roads, but you can also use it for many other purposes. Its versatility and durability make it such a commonly used material. Among others, you can find it in the following sectors:
- Transportation (e.g., roads, railway beds, airport runways, taxiways)
- Recreation (playgrounds, bike routes, running tracks, tennis court)
- Industrial (ports, landfill caps, work sites)
- Building construction (floorings)
- Agriculture (barn floors, greenhouse floors)
Let’s discuss the different uses of asphalt.
Asphalt in Roofing
Asphalt is widely used in roofing due to its waterproofing properties. Asphalt shingles are the most common roofing material that asphalt paving contractors use for residential buildings. They are made by coating a fiberglass mat with asphalt and adding mineral granules for protection.
The shingles are renowned for their durability, lightweightness, and ease of installation. They are also available in various colors and styles to complement architectural design.
Asphalt Pavements in Tunnels
Asphalt is the primary material used for most paved roads globally. It provides excellent performance and durability even in heavily trafficked conditions. Therefore, it is ideal for construction and surfacing roads in tunnels.
Asphalt functions well and is durable under a wide range of climatic and traffic scenarios. It is becoming increasingly common in industrial locations and for specialized uses, like base courses for railroad tracks, buildings, airports, and tunnels.
Moreover, paving experts frequently discuss using asphalt in road tunnels in the building sector. The discussions primarily focus on safety in tunnels and the reaction to asphalt fire. The 2008 EAPA Position Paper explores the potential of asphalt pavements in tunnels. It solves the construction problems of paving asphalt in tunnels, noise reduction, skid resistance, care, and lightness in tunnels. It also addresses the safety aspects of paving activities and the response to tunnel fires.
Asphalt on Bridge Decks
Most steel and concrete bridges in Europe have asphalt surfacing on top. One primary goal of employing asphalt is to shield the steel and concrete buildings from Water and De-icing Salts. The asphalt bridge pavement system has four distinct layers.
1- Sealing/Bonding Layer (Primer)
2- Waterproofing Layer
3- Protecting Layer
4- Surface layer (Asphalt).
Asphalt Railway Tracks
The Asphalt mixture has been verified to be the most effective substitute for numerous elements of old-style railway constructions. In particular, asphalt construction in tracks, superstructure, rails, sleepers, fastings, ballast, and sub-ballast layers meets modern railway system requirements.
Because of their characteristics, bitumen, and asphalt present viable options for constructing modern railroad tracks. They have been demonstrated as one of the best replacements for conventional railway construction for deeply loaded pathways and high-speed tracks.
Additionally, they help increase the structure’s bearing capacity and enhance its stability and durability. This decreases maintenance needs and lessens noise and vibration.
Airfield Uses of Asphalt
Most airports are built with asphalt pavement. Several sections include parking lots, taxiways, aprons, and runways. The necessary specifications may vary mainly for surface courses for each. Good resistance to puncturing, fuel, and chemicals is essential for parking and driveways. An adequate level of skid resistance is required on other surfaces. Asphalt mixtures provide the answer to these numerous necessities.
In addition to these applications, these mixtures are commonly used for surfacing runways and aircraft handling areas on various airfields. The list includes
- International airports
- Military airfields for high-performance jet aircraft
- Â Smaller domestic airfields for light or medium-sized aircraft
- Most miniature private airfields are for light single- or twin-seat aircraft.