# Analysis of the Odor Purification Mechanism and Smoke Release of Warm-Mixed Rubber Asphalt
## 3 Results and Discussion  
### Analysis of Asphalt Putting Factors  
Asphalt materials play a crucial role in road construction and maintenance, and the stability of their performance is crucial for ensuring normal use and extending the service life of roads. From Figure 1, it can be observed that there are significant differences in the rutting factor data of different asphalt materials at different temperatures. In order to gain \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Test Items** & **Gas Characteristics** & **Analysis Methods** & **Method Source** \\ \hline Ammonia & Ammonia gas (NH\({}_{3}\)) is a colorless, toxic & & \\ inorganic compound with a strong irritating & & & \\ odor, with a boiling point of \(-\)33.5 \({}^{\circ}\)C. Excessive & & & \\ inhalation by humans can spur the skin, eyes, and mucous membranes of respiratory organs. & & & \\ In severe cases, it can cause lung swelling and & & & \\ even death. & & & \\ Nitrogen oxides (NOx) refer to compounds & & & \\ composed only of nitrogen and oxygen. & & & \\ Nitrogen oxides contain various compounds. & & & \\ Except for nitric oxide and nitrogen dioxide, all & & & \\ other nitrogen oxides are unstable and easily & & & \\ react to produce nitric oxide or nitrogen dioxide, & & & \\ which eventually transforms into nitrogen & & & \\ dioxide. Nitrogen oxides also have varying & & & \\ degrees of toxicity. & & & \\ Sulfur dioxide (SO\({}_{2}\)) is a colorless, pungent gas & & & \\ that is one of the main atmospheric pollutants & & & \\ and an important indicator of whether the & & & \\ atmosphere has been polluted. In addition to & & & \\ polluting the environment, sulfur dioxide also & & & \\ poses a great threat to human health. Sulfur & & & \\ dioxide is easily soluble in water and corrosive. & & & \\ When the concentration of sulfur dioxide is & & 10-15 ppm, it can cause damage to the moist & \\ mucosa and stimulate nerve endings when & & & \\ inhaled into the respiratory tract. If the & & & \\ concentration of sulfur dioxide exceeds 20 ppm, & & & \\ it can cause coughing, irritate the eyes, cause & & & \\ discomfort in the bronchi and lungs, and & & & \\ damage lung tissue and liver. & & & \\ Hydrogen sulfide (H\({}_{2}\)S) is a colorless, highly & & & \\ toxic gas with a foul egg odor. The sulfur & & & \\ element in petroleum asphalt produces & & & \\ hydrogen sulfide during the heating and & & & \\ decomposition process. The higher the sulfur & & & \\ content in asphalt, the more hydrogen sulfide is & & & \\ produced. Hydrogen sulfide can dissolve in & & & \\ water. After inhaling sulfur dioxide, people may & & \\ experience symptoms such as dizziness and & & & \\ nausea, and it can irritate the respiratory mucosa & & & \\ and hinder cellular respiration. When the & & & \\ concentration of hydrogen sulfide is below & & & \\
0.08 ppm\(-\)0.41 ppm, a small amount of free & & & \\ hydrogen sulfide will remain in the body after & & & \\ inhaling hydrogen sulfide gas. However, on-site & & & \\ construction workers who are exposed to & & \\ environments containing hydrogen sulfide for a & & & \\ long time will inevitably develop chronic & & & \\ respiratory diseases. & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Summary of smoke components. a deeper understanding of the significance behind these data, the following is a detailed analysis of the rutting performance of asphalt materials at different temperatures. The rutting factor is an indicator that measures the anti-rutting performance of asphalt materials. The higher the value is, the stronger is the ability of asphalt materials to resist rutting deformation. From the chart, it can be seen that the rutting factors of different asphalt materials exhibit significant differences, which are mainly related to the composition, structure, and temperature conditions of the materials.