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ADAPTATION OF ROAD NETWORK TO CLIMATE CHANGE César Bartolomé CONSEQUENCES OF CLIMATE CHANGE • Floods • Droughts • Hurricanes • Higher temperatures • Increase of rainfall Sonja Bruyninckx CONSEQUENCES OF CLIMATE CHANGE NATURAL DISASTERS RELATED TO CLIMATE CHANGE Myanmar, May 2nd, 2008 138.366 casualties hurricane China, 22 million people th April 17 , 2011 hurricane affected USA, hurricane August 29th, 2005 125.000 M€ cost Germany, flood UK, flood August, 2002 December, 2015 8.000 M€ cost 2.000 M€ cost Sonja Bruyninckx WHAT ABOUT ROADS? ROAD AFFECTION BY CONSEQUENCES OF CLIMATE CHANGE Extreme rainfall or floods Extreme phenomena Permanent phenomena Extreme winds Droughts Low temperatures Peak temperatures Increase in average temperature Erosion of foundations, slope instability, ground movement and deterioration of pavements High efforts on bridges Low affection to roads Road management (deicing salts) and cracking of pavements Softening and rutting of pavements Higher intensity of freeze-thaw cycles in the north of Europe Sonja Bruyninckx WHAT ABOUT ROADS? • Non-adapted roads: Disruptions: social and economic loss. Higher maintenance costs. Shorter service life. • Current requirements (sufficient) will become more difficult to fulfill, mainly in the long term. Sonja Bruyninckx SOLUTIONS? • New design criteria: Return periods Drainage systems Wind loads on bridges • Use of materials that are less affected by climate effects (concrete, stabilized soils, soil cement, etc.) Sonja Bruyninckx STRATEGY • Making long-term thinking a mandatory component in public tendering for road building. • Considering the resilience of the entire road network in Member State adaptation plans as part of the EU Adaptation Strategy. • Making available data for climate projections, so that road authorities can base their decisions on likely climate and weather scenarios for the future. Sonja Bruyninckx WHAT ABOUT STANDARDS? • “Standards are one of the most powerful tools • for adapting infrastructures to climate change” (according to the Commission). How should they be modified (if at all)? HORIZONTAL STANDARDS FOR ROAD CONSTRUCTION Sufficiently demanding PRODUCT STANDARDS No specific requirements Sonja Bruyninckx CURRENT SITUATION • 2013, EU Strategy on Adaptation to Climate Change involving European Standardization Organizations. • 2014, CEN and CENELEC established the Adaptation to Climate Change Coordination Group (ACC-CG) • • • Buildings and construction (already held) Transport infrastructure (today) Energy infrastructure (to be held at the end of the month) Sonja Bruyninckx CURRENT SITUATION • Resilience to climate change of roads depends on technical committee CEN/TC 227 (WG5) complemented by CEN/TC 350 (prEN 15643-5). • CEN/CENELEC has published Guide 32 for addressing climate change adaptation in standards. • No standard on this field has been developed so far. • A CWA for sustainability indicators for roads (climate change resilience included) was launched in December. Sonja Bruyninckx • CONCLUSIONS Climate resilience of roads is related to the choice of materials, but even more to the structure of the pavement. • There is no need to modify the “material standards”. • The only standards that deal with the entire structures or works are the ones of TC350. • A first step to integrate adaptation to climate change can be taken in the CWA Workshop on Sustainability Assessment of Roads. Sonja Bruyninckx THANKS FOR YOUR ATTENTION Sonja Bruyninckx