Detalhes do Documento

Assessment of the performance of warm mix asphalts in road pavements

Autor(es): Silva, Hugo Manuel Ribeiro Dias da cv logo 1 ; Oliveira, Joel cv logo 2 ; Ferreira, C. I. G. cv logo 3 ; Pereira, Paulo A. A. cv logo 4

Data: 2010

Identificador Persistente: http://hdl.handle.net/1822/18696

Origem: RepositóriUM - Universidade do Minho

Assunto(s): Warm mix asphalt; Asphalt additives; Temperature reduction; Mix performance; Pavement trial


Descrição
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, what may contribute 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 WMAs) for volumetric composition and mechanical behaviour assessment. This study essentially provides a better understanding of the good performance capabilities of WMA mixtures.
Tipo de Documento Artigo
Idioma Inglês
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