Infiltrating pavements are potentially effective climate adaptation measures to counteract arising challenges related to flooding and drought in urban areas. However, they are susceptible to clogging causing premature degradation. As part of the Dutch Delta Plan, Dutch municipalities were encouraged to put infiltrating pavements into practice. Disappointing experiences made a significant number of municipalities decide, however, to stop further implementation. A need existed to better understand how infiltrating pavements function in practice. Through 81 full-scale infiltration tests, we investigated the performance of infiltrating pavements in practice. Most pavements function well above Dutch and international standards. However, variation was found to be high. Infiltration rates decrease over time. Age alone, however, is not a sufficient explanatory factor. Other factors, such as environmental or system characteristics, are of influence here. Maintenance can play a major role in preserving/improving the performance of infiltrating pavements in practice. While our results provide the first indication of the functioning of infiltrating pavement in practice, only with multi-year measurements following a strict monitoring protocol can the longer-term effects of environmental factors and maintenance actually be determined, providing the basis for the development of an optimal maintenance schedule and associated cost–benefit assessments to the added value of this type of climate adaptation.
Rapport verschenen n.a.v. onderzoek, uitgevoerd door Altenburg & Wymenga, in opdracht van hogeschool Van Hall Larenstein. Dit kennisoverzicht heeft als doel een overzicht te geven aan beschikbare kennis en kennisleemten. Waar staan we nu? En wat moet nog verder worden uitgezocht? Lisdoddeteelt en veenmosteelt staan centraal, aangezien deze twee natte teeltvormen reeds zijn onderzocht binnen de pilotstudies van Better Wetter. Aanvullend op bovengenoemde uitgangspunten wordt in een apart hoofdstuk de verwachte impact van teeltwerkzaamheden toegelicht. Ten slotte worden de belangrijkste conclusies, kennisleemtes en openstaande onderzoeksvragen bondig op een rij gezet.
MULTIFILE
