WP5: Performance modelling of RA

OBJECTIVE: This work package aims to model the performance of the RA and to study the pavement life, as well as their sensitivity to damage.

The aims of WP5 are to: (i) develop a numerical tool that can be used to design pavements made of recycled materials, and (ii) predict pavement life as well as sensitivity to damage. This tool will be based on the Finite Elements (FE) method.

The outcome from the numerical simulations are primary responses (e.g. stresses, displacements and strains of the entire structure) and damage which will form the basis for determining the bearing capacity of the structure and the future performance. The numerical tool will enable optimised structures to be developed automatically for specified boundary conditions which may address ecological and/or economic concerns while assuring the durability and the load bearing capacity of the structure.  Within the research project, laboratory tests on selected RA mixes will be conducted to determine the input parameters required for the numerical simulations.

In addition, new and relevant healing factors of binders and asphalt mixes are determined. These factors will contribute to more accurate pavement design and pavement life prediction. Healing factors of unaged and aged binders and mastics will be determined using appropriate testing methods and compared. In this study a new healing model of UC of Antwerp will be verified.

Tasks of WP5:

• Task 5.1: Determine the input parameter from laboratory tests for a numerical tool
• Task 5.2: To predict the pavement life as well as their sensitivity to damage of recycled materials