## 4 Conclusions  
1. The application temperatures of the anti-icing asphalt mixture should exceed \(-10\)\({}^{\circ}\)C for the moderate or light snow conditions and exceed \(0\)\({}^{\circ}\)C for heavy or blizzard conditions.
2. A linear dependence between the anti-icing asphalt mixture snowmelt quality and time was observed for all tested values of snowfall intensity and temperature. On the other hand, under the same snowfall intensity conditions, a two- to threefold increase of the melting rate with temperature was observed. At the same temperature, only a slight variation of the melting rate for different snowfall intensities was observed.
3. The anti-icing asphalt mixture has the function of deicing performance so that the adhesion between ice and pavement can be reduced.  
Four regions of the anti-icing asphalt mixture application climate zone have been identified as follows: Region 1, which is denoted as the chilling region, and the extremely minimum temperature range is between \(-9\) and \(-21.5\)\({}^{\circ}\)C; Region 2, which is denoted as the cold region, and the extremely minimum temperature range is between \(-21\) and \(-37\)\({}^{\circ}\)C; Region 3, which is denoted as the warm region, and the extremely minimum temperature is above \(-9\)\({}^{\circ}\)C; and Region 4, which is denoted as the severely cold region, and the extremely minimum temperature is below \(-37\)\({}^{\circ}\)C.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Climatic** & **Applicable Situation** & **Extreme Minimum Temperature of 30 Years** & **Average Temperature of the Coldest Month** & **Snow Intensity** \\ \hline Region 1 & Most suitable & \(-9\) to \(-21.5\)\({}^{\circ}\)C & \(\geq\)\(-10\)\({}^{\circ}\)C & \begin{tabular}{c} Light snow (Mostly) \\ Moderate snow \\ (Occasionally) \\ \end{tabular} \\ \hline Region 2 & suitable & \(-21\) to \(-37\)\({}^{\circ}\)C & \(\geq\)\(-15\)\({}^{\circ}\)C & \begin{tabular}{c} Light snow and \\ Moderate snow (Mostly), \\ Heavy snow \\ (Occasionally) \\ \end{tabular} \\ \hline Region 3 & Special section & \(>\)\(-9\)\({}^{\circ}\)C & \(\geq\)\(0\)\({}^{\circ}\)C & \begin{tabular}{c} Light snow, Frozen rain \\ or snow after melting ice \\ (Occasionally) \\ \end{tabular} \\ \hline Region 4 & \
\begin{tabular}{c} Special sections \\ combined with other \\ snow removal methods \\ \end{tabular} & \(<\)\(-37\)\({}^{\circ}\)C & \(\leq\)\(-20\)\({}^{\circ}\)C &
\begin{tabular}{c} Moderate snow and \\ Heavy snow (Mostly), \\ Blizzard (Occasionally) \\ \end{tabular} \\ \hline \hline \end{tabular}
\end{table}
Table 13: Climatic Division of anti-icing asphalt mixture.  
Figure 17: Climatic Division of anti-icing asphalt mixture.  
**Acknowledgments:** This research was supported by the Fundamental Research Funds for the Central Universities in China (No. 310821163502), the Customize Traffic Science and Technology Project of Rizhao city in Shandong Province, the Science and Technology Innovation Plan of Shandong Province (Grant No. LU Transport Technology [2011] 22), the Science and Technology Project of Tianjin city and the Transportation Science and Technology project of Henan Province (Grant No. 2010P229).  
**Author Contributions:** [PERSON] was in charge of the whole research plan and paper submission matters. The first author extends gratitude to [PERSON], [PERSON] and [PERSON] for performing the experiment and analyzing test data; and [PERSON] and [PERSON] for offering help in doing the experiment.  
**Conflicts of Interest:** The authors declare no conflict of interest.