Is Leaching Hydrocarbons If It's Not Bituminous Asphalt?
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As populations increase worldwide, the shift from rural communities into city centers has presented a new set of problems to the environment. Originally, I hypothesized that bituminous asphalt was the main contributor to the pollution of urban water, but I realised that asphalt isn’t what’s leaching hydrocarbons. So my initial research questions are: What is leaching hydrocarbons if it’s not bituminous asphalt? In addition, what other elements contribute to watershed degradation and pollution? Are there any solutions to urbanization’s problems?
Bituminous asphalt and polycyclic aromatic hydrocarbons (PAH) The most widespread medium used for pavement is asphalt. Hot mix asphalt’s most important component is the binder agent, bitumen, which is a byproduct of processing crude petroleum and binds the different aggregates together. However, not all asphalt is created equally; there are major chemical differences between virgin and reclaimed asphalt pavement. For instance, virgin asphalt only consists of aggregates and the binder agent. On the other hand, reclaimed asphalt pavement (RAP) is riddled with pollutants that had accumulated on the surface before it was reused. In addition, sometimes certain rejuvenating agents, that are meant to add viscosity and restore the binder compounds that are leached over time, are added. Samples that reflected realistic conditions were compared to laboratory made samples of virgin and reclaimed asphalt pavement.
The realistic samples