Hydrological performance of lined permeable pavements in Norway

Abstract

Lined permeable pavements (LPPs) are types of sustainable urban stormwater systems (SUDs) that are suitable for locations with low infiltration capacity or shallow groundwater levels. This study evaluated the hydrological performance of an LPP system in Norway using common detention indicators and flow duration curves (FDCs). Two hydrological models, the Storm Water Management Model (SWMM)-LID module and a reservoir model, were applied to simulate continuous outflows from the LPP system to plot the FDCs. The sensitivity of the parameters of the SWMM-LID module was assessed using the generalized likelihood uncertainty estimation methodology. The LPP system was found to detain the flow effectively based on the median values of the detention indicators (peak reduction = 89%, peak delay = 40 min, centroid delay = 45 min, T50-delay = 86 min). However, these indicators are found to be sensitive to the amount of precipitation and initial conditions. The reservoir model developed in this study was found to yield more accurate simulations (higher NSE) than the SWMM-LID module, and it can be considered a suitable design tool for LPP systems. The FDC offers an informative method to demonstrate the hydrological performance of LPP systems for stormwater engineers and decision-makers.

Towards improving the hydrologic design of permeable pavements

“…The soil layer of the LID module is optional and can be used to represent the bedding layer for permeable interlocking concrete pavements (Rossman 2015). The soil layer contains many parameters that are considered sensitive (Randall et al 2020;Abdalla et al 2021) which require careful measurement or calibration. On the other hand, for other types of permeable pavement, such as pervious concrete, the soil layer is not required (Jato-Espino et al 2016;Wang et al 2019).…”

“…Flow duration curves (FDC) of the surface runoff were plotted to analyse the performance of PP. This study applied a modified version of FDC that relates between the flow and the duration of time in which this flow value is exceeded, which is recommended by Abdalla et al (2021). To improve the visualization, FDC were plotted in log-log scales.…”

Evaluation of Solidified Wastewater Treatment Sludge as a Potential SCM in Pervious Concrete Pavements

“…Design and PCPs technical requirements for light loadings are rarely standardized; however, certain standards in this regard have recently been established in the EU [ 9 ]. In addition to conventional pedestrian sidewalks, PCPs have been applied for green roof patios [ 10 , 11 ]. In order to minimize static roof loads, lightweight aggregate (expanded clay) has recently been applied for PCP production [ 12 ].…”

“…Even if properly managed, this waste still requires large plots of land for final disposal. Incorporating wastes into PCP production could not only lower cement production, but also address the issue of waste, which would directly trigger double benefits for the environment [ 10 , 13 ]. Processed wastewater treatment sludge (WWTS) has been introduced as a supplementary cementitious material (SCM) in concrete mixtures for PCP production [ 14 ].…”