A. J. D. B. Carrión, M. Pérez-Martinez, Andrea Themeli, D. Presti, P. Marsac, S. Pouget, F. Hammoum, E. Chailleux, G. Airey
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Evaluation of bio-materials’ rejuvenating effect on binders for high-reclaimed asphalt content mixtures
The interest in using bio-materials in pavement engineering has grown significantly over the last decades due to environmental concerns about the use of non-recoverable natural resources. In this paper, bio-materials are used together with Reclaimed Asphalt (RA) to restore some of the properties of the aged bitumen present in mixtures with high RA content. For this purpose, two bio-materials are studied and compared to conventional and polymer modified bitumens. Blends of these materials with RA bitumen were produced and studied to simulate a 50% RA mixture. The rejuvenating effect of the two bio-materials on RA has been assessed and compared with the effect of the conventional binders. Apparent Molecular Weight Distribution of the samples (obtained by the ?-method) and different rheological parameters were used for this purpose. Results revealed the power of bio-materials to rejuvenate RA bitumen, showing their capability to be used as fresh binders in high-RA content mixtures.
期刊介绍：
Materiales de Construcción is a quarterly, scientific Journal published in English, intended for researchers, plant technicians and other professionals engaged in the area of Construction, Materials Science and Technology. Scientific articles focus mainly on:
- Physics and chemistry of the formation of cement and other binders.
- Cement and concrete. Components (aggregate, admixtures, additions and similar). Behaviour and properties.
- Durability and corrosion of other construction materials.
- Restoration and conservation of the materials in heritage monuments.
- Weathering and the deterioration of construction materials.
- Use of industrial waste and by-products in construction.
- Manufacture and properties of other construction materials, such as: gypsum/plaster, lime%2
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