Abstract: The GREENROAD project was born to demonstrate a technically feasible alternative to conventional mixtures and to improve the sustainability of the road sector. The project involves the development of Asphalt Concrete mixture manufactured with steel slag of Electric Arc Furnace, which is produced in the region and currently implies a high environmental cost; RAP from other mixtures; and bitumen modified with end-of-life tyres. Besides, a wax has been used to decrease the manufacture temperature and improve the environmental impact. Finally, a mixture with more than 80% of recycled aggregates and with a decrease of temperature from 20°K to 30°K was achieved in laboratory, reaching the requirements for the maximum category of heavy traffic level (T00) of the Spanish specifications.

• Publication Date: 27-May-2015
• DOI: 10.15224/978-1-63248-062-0-34
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Abstract: A significant correlation was observed between the occurrence of stay-cable vibrations and the combined presence of wind and rain, as the latter led to the adoption of the term Rain-Wind Induced Vibrations. This phenomenon may generate oscillations over the stays, and then over the deck, with remarkable amplitude. The behaviour of a large number of stays was analysed, without external damping systems, different in length, slope, diameter, tension applied and inherent damping. These cables have been exposed to different environmental conditions represented by the rain and winds agents with different wind angles and speeds. The calibration of the used code has shown that a value of the inherent damping higher than the one actually evaluated should be used in order to obtain the vibration levels measured in reality. The analysis of the simulations showed that the number of stays that are affected by the vibrations is small if compared to the total number of tested configurations. This is

• Publication Date: 27-May-2015
• DOI: 10.15224/978-1-63248-062-0-35
• Views: 0
• Downloads: 0