Resiliency and Sustainability Benefits of Permeable Pavement Systems

Abstract: Structurally- and functionally-sound pavements should withstand floods and excessive water runoff. Hence, impervious paved surfaces may pose challenges to water management; especially in urban areas during storms. As part of a robust stormwater management strategy, permeable pavement system (PPSs) may be considered. The recent advances in pavement material and construction techniques, structural and hydraulic designs, and the new approaches to measure filtration and improve drainage present an opportunity to quantify the benefits of PPS.
PPS may be used to i) reduce surface water quantity, ii) improves water quality, and/or iii) benefit communities in various ways. While PPS could be more expensive than traditional flexible pavement to construct and maintain, the added benefits of stormwater management, safety, and preserving water quality could offset the potential additional costs. Life cycle cost analysis revealed long-term economic benefits, including reduced maintenance expenses and extended service life.
This presentation explores multiple aspects of using PPS in the US and worldwide, including pavement resiliency, international and locally available case studies and demonstration projects, maintenance practices, and life cycle cost. Through various case studies, the adaptability and effectiveness of PPS in reducing stormwater runoff, enhancing water quality, and delivering economic and environmental advantages are demonstrated in this presentation. Maintenance strategies, such as routine cleaning and rejuvenation techniques, ensure optimal performance, aligning with goals of urban development.
The recent advances in pavement material and construction techniques, structural and hydraulic designs, and the new approaches to measure filtration and improve drainage present an opportunity to quantify the benefits of PPS. However, PPS have some limitations. These include leaching potential, maintenance requirements, cost of construction and operation/maintenance, structural capacity, material acquisition, and lifetime impact uncertainty. This presentation addresses challenges, opportunities, knowledge gaps, and potential solutions associated with the implementation and integration of PPS into pavement practices.