Assessment of the Performance of Warm Mix Asphalts in Road Pavements

Hugo M. R. D. Silva ； Joel R. M. Oliveira ； Cláudia I. G. Ferreira ； Paulo A. A. Pereira

《International Journal of Pavement Research and Technology》 3卷3期 (2010/05) Pp. 119-127

https://doi.org/10.6135/ijprt.org.tw/2010.3(3).119

並列摘要

Several processes and products are available to produce warm mix asphalt (WMA). These may reduce the mixing and compaction temperatures in relation to hot mix asphalt (HMA), ensuring the necessary performance in the pavement. Lower plant mixing temperatures mean reduction in fuel consumption and lower emissions, possibly contributing to diminish health and odour problems and to decrease costs. During this work, two commercial additives (Sasobit® and Cecabase®) were used to produce WMAs, which were compared with a conventional HMA. Initially, the mixtures were designed, the amount of additive was selected (based on the binder characterization) and the mixing temperatures of the WMAs were chosen by means of EN 12697-10 compactability comparison. Then, a road trial was built and test specimens were collected (both of HMA and WMA) for volumetric composition and mechanical behaviour assessment. This study essentially provides a better understanding of the good performance capabilities of WMA mixtures.

並列關鍵字

Asphalt additives ； Mix performance ； Pavement trial ； Temperature reduction ； Warm mix asphalt