Rubber-modified hot-mix asphalt pavement by dry process
Abstract:This paper focuses on tyre rubber-modified hot-mix asphalt for traffic pavements fabricated by dry process. Fine granulated crumbed rubber from discarded tyres was mixed with heat aggregates and after a short delay time, an ordinary bitumen binder was added to the mixture in the plug mill. The research was partially carried out in the laboratory (designing the optimum mixture composition) and on site, constructing an experimental road segment, 2.5 km length, in a secondary traffic road located between Salamanca and Ciudad Rodrigo (Spain). The rubber-modified hot-mix asphalt (RMHMA) was placed on site and compacted after a controlled time of maturation (ageing) of the warm rubber-modified hot-mix asphalt, which promotes a close interaction between the rubber particles and the binder.
Document Type: Research Article
Affiliations: 1: E.T.S. Arquitectura, Universidad Politecnica de Madrid, Madrid, Spain 2: Pavimentos Asfalticos de Salamanca (PAS S.L.), Salamanca, Spain 3: Facultad de Ciencias, Universidad de Salamanca, Salamanca, Spain
Publication date: 2009-08-01