Encontrados 4 documentos, a visualizar página 1 de 1
Optimization of warm mix asphalts using different blends of binders and paraffi...
Silva, Hugo Manuel Ribeiro Dias da; Oliveira, Joel; Zoorob, S.; Peralta, Elvira Joana FerreiraIn road construction, several processes and products are now available to produce environmentally friendlier warm mix asphalts, including the use of synthetic paraffin wax additives. These additives facilitate the production of energy efficient asphalt mixtures at reduced manufacturing and construction temperatures. However, their sustainability during the road life cycle can only be obtained by optimizing the ...
Study of the interaction between bitumen and rubber
Peralta, Elvira Joana FerreiraDissertação de mestrado em Engenharia Civil (área de especialização em Engenharia Rodoviária) ; Approximately 9 to 10 kg of rubber from tyres per inhabitant and year are currently discarded in the industrialized societies. It is a waste material with a highly valuable constituent: vulcanized natural and synthetic rubber. Thus, the introduction of crumb rubber in the production of asphalt rubber (AR) mixes for...
Rheological and functional evaluation of the interactions between bitumen and r...
Peralta, Elvira Joana Ferreira; Silva, Hugo Manuel Ribeiro Dias da; Pais, Jorge C.; Machado, A. V.It is estimated that about ten kilograms of tires are discarded per inhabitant annually. The negative impact of this residue can be reduced, since rubber can be reused as a constituent of asphalt rubber (AR) binder in road pavements. However, the materials which constitute the AR binders and their interaction are not sufficiently characterized. In this work several base bitumens interacted with crumb rubber, in...
Evaluation of the rheological behaviour of Warm Mix Asphalt (WMA) modified binders
Silva, Hugo Manuel Ribeiro Dias da; Oliveira, Joel; Ferreira, C. I. G.; Peralta, Elvira Joana FerreiraSeveral processes and products are available to produce warm mix asphalt (WMA). The use of those may reduce the mixing and compaction temperatures in relation to hot mix asphalt (HMA), ensuring a good performance of the pavement. Lower plant mixing temperatures mean reduction in fuel consumption and lower emissions, what may contribute to diminish odours and health problems. A laboratory study on the properties...
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