Comparative Study on Laboratory Performance of Hot- and Warm-mix Asphalt Mixtures
Author | : Yiqiu Tan |
Publisher | : |
Total Pages | : 9 |
Release | : 2012 |
Genre | : Additive |
ISBN | : |
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In an effort to study sustainable environmentally friendly pavement, the physical mechanics and road performance of warm-mix asphalt mixtures based on an emulsifying platform were studied via the Marshall design method. The results show that the optimum asphalt content of warm-mix asphalt mixtures is generally higher than that of hot-mix asphalt mixtures by 0.1 % to 0.2 %; the values of the stability, bulk specific gravity, air voids, and voids in mineral aggregate do not change significantly; and the number of voids filled with asphalt and the flow value increase a little. The residual stability value of warm-mix asphalt mixtures increases, whereas the freeze-thaw splitting strength decreases. The high-temperature performance and seepage performance of warm-mix asphalt mixtures are similar to those of hot-mix asphalt mixtures.