1. Environmental Sustainability RPF May 2008

2. Slide 2 © CSIR 2006 www.csir.co.za Resolution: RPF Nov 2007 That an RPF working group be established to develop guidelines for environmentally sustainable practices in construction and maintenance of road pavements

3. Slide 3 © CSIR 2006 www.csir.co.za Climate Change Do nothing MitigationAdaptation Soften impact of climate change Reduce GHG emissions Reduce energy consumption Mitigation strategies Adjust to changing environmental conditions Climate change scenarios (local) Risks/vulnerability Adaptation strategies

4. Slide 4 © CSIR 2006 www.csir.co.za

5. Slide 5 © CSIR 2006 www.csir.co.za Contribution of transport to CO 2 emissions

6. Slide 6 © CSIR 2006 www.csir.co.za Energy consumption in transport (%)

7. Slide 7 © CSIR 2006 www.csir.co.za Possible roadmap for Mitigation of Climate Change Identification of mitigation options Screening of mitigation options Assessment of reduction potential and cost of mitigation Identification and removal of barriers to implementation Institutional capacity building Regulation policies

8. Slide 8 © CSIR 2006 www.csir.co.za Step 1: Identification, screening and quantification of mitigation options Best practice guideline for the use of environmentally sustainable materials and processes in road construction Introduction (context) Material considerations Bituminous materials (warm, half-warm, bio-binders…) Cementitious materials (HPC, high solar reflectance concrete...) Recycling of materials (CIPR, HIPR…) Alternative materials (bio-binders, recycled concrete, slag…) Road design considerations (preservation, long-life pavements) Construction considerations (energy demands, emissions…) Traffic considerations (capacity/congestion, ITS, model shift) Other considerations (noise attenuation…)