ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 1 August 2012
Page Count: 9

Comparative Study on Laboratory Performance of Hot- and Warm-mix Asphalt Mixtures

Tan, Yiqiu
Harbin Institute of Technology, Harbin,

Guo, Meng
Harbin Institute of Technology, Harbin,

Xu, Huining
Harbin Institute of Technology, Harbin,

Zhang, Rui
Harbin Institute of Technology, Harbin,

(Received 12 March 2012; accepted 24 April 2012)

Abstract

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.

Keywords:
warm-mix asphalt, mix proportion design, road performance, additive, emulsifying platform

Paper ID: JTE20120056
DOI: 10.1520/JTE20120056
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