Asphalt Smoke
Asphalt smoke is a viscous and black smoke that is generated during the process of asphalt-based composition. An asphalt road surface is made when asphalt, a petroleum byproduct, is combined with other ingredients like aggregate, to create a roads surface with many layers. During the construction and/or maintenance of asphalt-based roads and pavements, it is common for asphalt smoke to be produced and released in large amounts.
Asphalt smoke is formed when the asphalt is heated up to high temperatures during laying and compaction. As the asphalt heats up it releases toxins into the air in the form of black smoke. This smoke has some hazardous pollutants in it, such as particulate matter, carbon monoxide, nitrogen oxides, sulfur dioxide, and volatile organic compounds (VOCs). Particulate matter is a particular health risk as it can enter the lungs and irritate the respiratory system. Long term exposure to asphalt smoke can also lead to an increased risk of cardiovascular and respiratory illnesses.
The health risks of asphalt smoke are relatively well-understood, meaning that it is important for asphalt construction and maintenance workers to take appropriate precautions in order to protect their health and wellbeing. This includes wearing protective gear such as masks and respirators, and ensuring that the working area is well-ventilated. In addition to this, it is essential that proper measures are taken to minimize exposure to the smoke, such as using machinery that is specifically designed to reduce the emission of this smoke into the surrounding environment.
Fortunately, over recent years, many advancements have been made in asphalt technology that have helped to reduce the emission of asphalt smoke. One of the most significant advances has been the use of warm-mix asphalt (WMA). WMA is an asphalt-based composite that is heated to a lower temperature than is usually used for asphalt-based compounds, meaning that the smoke produced is significantly less. WMA also uses fewer chemicals than traditional asphalt-based compounds, consequently reducing the amount of harmful pollutants released.
In conclusion, asphalt smoke is a dangerous substance and poses a significant health risk to workers who are regularly exposed to it. The best way of preventing exposure to the smoke is by ensuring that proper safety measures are taken, such as wearing protective gear and making use of machinery that is specially designed to reduce emissions. In addition, the use of warm-mix asphalt has enabled a reduction in emissions and has also meant that fewer chemicals are released into the environment.
