Warm Mix Asphalt with Synthetic Zeolite: A Laboratory Study on Mixes Workability

10.6135/ijprt.org.tw/2013.6(5).562

Rosolino Vaiana；Teresa Iuele；Vincenzo Gallelli

Asphalt workability ； Compaction energy ； Foaming process ； Synthetic zeolite ； Warm mix asphalt

International Journal of Pavement Research and Technology

6卷5期（2013 / 09 / 01）

562 - 569

英文

In recent years, several warm mix asphalt technologies have been developed in order to enable significant energy savings and harmful emissions restraint by reducing mixing and compaction temperatures in hot mix asphalt production processes. This paper focuses on the evaluation of workability of WMA produced in laboratory by water-containing methodology with the addition of synthetic zeolite. Both volumetric and mechanical performance of warm asphalt mixtures compared with those of a reference hot mix were evaluated. For the Marshall specimens the variation of density with the compaction energy was also investigated. Finally, some considerations about the effect of the time of foaming (between mixing and compaction) on mixes workability are drawn.