What are the different types of asphalt?

Asphalt is most known as a road covering technically called asphalt concrete , but there are several different forms in which the substance can appear. It is a naturally occurring material present in raw oil and in natural bearings, especially around certain water formations and oil sands. This substance is found either in liquid or semi -solid form in nature and is characterized by high viscosity and sticky, black appearance. It consists almost exclusively of bitumen, a substance composed of polycyclic aromatic hydrocarbons (PAH). The main types used in the construction are rolled and dark. It is made of aggregate or solid materials such as sand, gravel or recycled concrete, with asphalt binder. This type is used to make roads and other surfaces such as parking. Different types are distinguished according to the process used to bind the aggregate with asphalt. This high temperature is used to reduce viscosity and humidity during the manufacturing process, leading toVery durable material. HMAC is most commonly used for areas with high traffic, such as busy highways and airports.

Warm mix Asphalt concrete (WAM or WMA) reduces the temperature needed to produce by adding emulsions, waxes or zeolites. This process is beneficial to the environment and workers because it results in less fossil fuel consumption and a reduction in vapor emissions. In Cold mix asphalt concrete is asphalt emulsified in soapy water before mixing with the aggregate, which completely eliminates the need for high temperatures. However, the resulting material is not nearly as resistant as HMAC or WAM and is usually used for areas with low operation or repair damaged HMAC.

asphalt concrete and asphalt concrete has been illegal in the United States since the age of 70, but many other countries around the world still use it. This type of concrete is the least ecological optioní, leading to significantly more air pollution than other forms. It is made by melting the binder in kerosene before mixing with the aggregate, reducing the viscosity, while the concrete is laminated and compacted. Lighter kerosene later evaporates and leaves a hard surface.

dark asphalt , also called asphalt leaf has a lower bitumen content than rolled forms. It is used for some roads and sidewalks, but also for roofing and floors. Asphalt Stone Mastic Asphalt (SMA), other variety, becomes increasingly popular as an alternative. Its advantages include the property of the aabsence of air pockets, but if it is laid incorrectly, it can cause slippery road conditions.