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.
Warm mix asphalt with synthetic zeolite: a laboratory study on mixes workability
VAIANA, Rosolino;
2013-01-01
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
