Road construction in a post-fossil fuel society
Recycling and minimising use of resources is of vital importance to European road authorities given the finite nature of fossil fuels and other resources. Call 2012 Recycling aimed to develop new concepts for road construction, with a particular focus on pavements. The programme funded three transnational projects with a total of thirteen consortium members.
A: Characterization of Advanced Cold Recycling Bitumen Stabilized Pavement Solutions (COREPASOL)
COREPASOL Developed and recommended a harmonized advanced mix design procedure for cold recycled bitumen stabilized materials, for application throughout Europe. This allows road administrators and designers to use cold-recycled mixtures as a standard component of a pavement structure. Project website available here.
- D1.1 Report on available test and mix design procedures for cold-recycled bitumen stabilised materials
- D2.1 Report on Durability of cold-recycled mixes: Test procedures for simulating long-term ageing
- D2.1 Report on Durability of cold-recycled mixes: Test procedures for stiffness determination
- D2.1 Report on Durability of cold-recycled mixes: moisture susceptibility
- D3.1 Report on incorporation of cold recycled pavement layers in empirical and mechanistic pavement design procedures
- D4.1 Activity of RA bitumen in cold-recycled mixes
- D4.2 Report on recyclability and multiple recyclability of cold-recycled asphalt mixes in cold and hot recycling
- D5.1 Environmental Evaluation of Materials Used for Cold Recycled Mixes
- D5.2 Guide for using suitable eco-balance tools to evaluate the environmental compatibility of cold recycling
B: Effects of Availability on the Road Network (EARN)
EARN investigated the effects of using reclaimed asphalt (RA) and/or lower temperature asphalt on the road network. The project addressed the durability of road structures, layers (and in particular the surface course) and materials containing high proportions of reclaimed road materials. Different strands, e.g. laboratory and site trials, were fed into life-cycle analysis models to customise them for the effect of using alternative component materials on the availability of the network and their overall financial and environmental cost. Project website available here.
- EARN Project Description
- D2 Report on the results of the laboratory tests for the RA mixtures without considering the effect of ageing
- D3 Effects of constituent materials, recycled and secondary sources materials and construction conditions on pavements durability derived from literature and site data review
- D4 Report on the results of laboratory tests for the RA mixtures after field ageing
- D5 & D6 Cost and CO2e modelling of lower temperature materials with recycled content, as used in site trials; Decision Modelling
- D6 Decision Model
- D7 Laboratory study on moisture and ageing susceptibility characteristics of RA and WMA mixtures
- D8 Report of laboratory and site testing for site trials
- D9 Final report on effectsof using reclaimed asphalt and/or lower temperature asphalt on the road network
C: Toward a sustainable 100% recycling of reclaimed asphalt in road pavements (AllBack2Pave)
AllBack2Pave established, through laboratory tests on binders and asphalt mixes, whether the use of high rates of reclaimed asphalt is feasible in developing mixes with a high level of durability. The “AllBack2Pave enduser manual” explains on how to best produce cost-effective and quality asphalt mixes with high RA content. Provides a basis to develop an own sustainability rating system for road pavements which will take into account results of previous projects, e.g. GREENROADS®. Project website available here.