Objectives



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Objectives

The LIFE NEREiDE project wants to demonstrate the use of new porous asphalt pavements and low noise surfaces composed by recycled asphalt pavements and crumb rubber from scrap tires. 

These materials will be mixed with binders at warm temperatures to produce warm mixture asphalt pavements with specific benefits: 

  • to reduce the disposal of waste materials, that by this way will be recycled, and to reduce the use of virgin materials (promote resource efficiency and waste management);
  • to achieve acoustical performance better than those currently available, allowing a significant reduction of noise in urban areas and health improvement; 
  • to improve safety in urban areas by obtaining draining and good textured surfaces; 
  • to improve air pollution due to asphalt laying. 

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The new pavements will be laid in 2 selected urban areas in Tuscany, and will be tested with innovative instrumentation; a specific device, based on methods currently available in literature, will be placed in a mobile laboratory and used for measuring absorption. The effectiveness of the new pavements will be evaluated by measurements of surface characteristics, acoustical properties and by surveys submitted to the exposed population. The criterion used to evaluate the effectiveness is based on a before-after evaluation of the surfaces acoustical properties as well as the comparison with other traditional porous asphalt pavements. Thus, a side objective is to develop new techniques to monitor performances of new pavements in order to improve the reliability of the results. Differences between performances of surfaces must be evaluated on site with techniques able to rate them also in urban context. The effectiveness of new asphalts will be monitored also with reference to the subjective response to noise before and after the intervention. 

The experimental activities will lead to the development of specific guidelines to be used by Road Administrations in preparing specifications for the construction of new porous asphalt, low-noise and low carbon footprint road surfaces. Guidelines will be developed in order to upgrade and to improve the methods currently available to assess the effectiveness of low noise road surfaces in urban areas. The dissemination of these guidelines will enhance the use of such surfaces at EU level and the achievements of the main aims in other contexts.