Characteristics of Different Warm Mix Asphalt Compacted at Low Temperature
Additives on low temperature compaction and performances of compacted mixtures, the author devised low temperature environment compaction test, and then, comparison tests of volume parameters, high temperature stability, low temperature crack resistance and water sensitivity were conducted. Tests results showed that the wax additives and the surface-active additive can significantly contribute to mixtures low-temperature compactibility. The wax additive helps to improve high temperature stability obviously, and has no significant contribution to low temperature crack resistance and water sensitivity. The surface-active additive directly reduces water sensitivity, the wax additive indirectly plays the role of reducing water sensitivity by increasing the density of mixture, and the foam additive has no obvious effect on the water sensitivity.
L. M. Wang et al., "Characteristics of Different Warm Mix Asphalt Compacted at Low Temperature", Advanced Materials Research, Vols. 255-260, pp. 3166-3170, 2011