High performance underlayers with high percentages of re-use as developed in the NR2C-project.

Author(s)
Vanelstraete, A. Maeck, J. Visscher, J. de Arnaud, L. Vansteenkiste, S. & Dumont, A.-G.
Year
Abstract

The project New Road Construction Concepts (NR2C) is an innovation project of FEHRL supported by the European Commission under the Sixth Framework Programme. NR2C develops long-term perspectives and physical trial projects, in which long-term visions and ideas are linked to short-term action. One of the ideas towards sustainable road construction concerns the development of high performance underlayers with high percentages of re-use materials. High stiffness underlayers are largely used in Europe, but re-use is often very restricted or not used at all because of fear for limited durability. This project aims to optimize the design of such mixes so as to guarantee their long-term performance, even with high percentages of reclaimed asphalt (RA) (including mixes containing 25 per cent and 40 per cent of RA). The mix designs are made and optimized using BRRC's PradoWin-software. An extensive laboratory testing program is carried out, with the aim to evaluate, compare and optimize the performance of these mixes, which is related to stiffness, fatigue cracking, durability/adhesion and permanent deformation. After this laboratory testing phase, three mix designs will be selected and further studied in the full-scale accelerated loading testing (ALT) facility of LAVOC. The sections will be loaded with a heavy traffic simulator, and assessed at subsequent thermal cycles. This study will permit to evaluate the behaviour of the selected solutions in an accelerated way and close to field conditions. The instrumentation (gauges to measure horizontal as well as vertical deformations) in the structure will provide data that are necessary for the assessment of the structural design. Based on the performance characteristics of the mixtures determined in the laboratory study and on the results of the accelerated loading, the impact on the structural design of the road and on the lifetime of the pavement will be investigated. New construction as well as different repair situations with these solutions will be considered, for different climatic and traffic conditions, representative for Europe (A). For the covering abstract of the conference see ITRD E212343.

Request publication

8 + 6 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

Publication

Library number
C 47518 (In: C 47458 CD-ROM) /31 / ITRD E216752
Source

In: Greener, safer and smarter road transport for Europe : proceedings of TRA - Transport Research Arena Europe 2006, Göteborg, Sweden, June 12th-15th 2006, 6 p., 2 ref.

Our collection

This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.