Investigation of Mechanical and Hydrologic Characteristics of Porous Asphalt Pavement with a Geocell Composite.

Jaehun Ahn,Jeongho Oh,Tan Hung Nguyen,In Kyoon Yoo

doi:10.3390/ma14123165

Abstract

Porous asphalt pavement is a part of the permeable pavement system, which can be used to mitigate the negative impacts of urbanisation on the water hydrological cycle and environment. This study aims to assess the mechanical and hydrologic characteristics of porous asphalt pavements, with and without geocell composites, using a plate load test, falling weight deflectometer test, and rainfall simulation test. The corresponding results indicate that the elastic modulus of the unreinforced pavement is lower than that of the reinforced pavement. The analysis demonstrates that the use of geocell composites effectively increases the load-bearing capacity of the pavement. When the base layer is reinforced with geocells, its load-bearing capacity increases. Observation of the rainfall simulation tests on the reinforced pavement indicates that the reinforced pavement effectively handles the surface runoff.

Highlights

IntroductionThe permeable pavement system is a low impact development technology that can be used to mitigate the negative impacts of urbanisation on the water hydrological cycle.Permeable pavement systems have recently seen increasing use worldwide as an effective solution for controlling rainwater quantity and quality [1,2]
The permeable pavement system is a low impact development technology that can be used to mitigate the negative impacts of urbanisation on the water hydrological cycle.Permeable pavement systems have recently seen increasing use worldwide as an effective solution for controlling rainwater quantity and quality [1,2]
Based on the stress-strain curves, the elastic modulus values for the first and second loading cycles were determined according to the manual DIN 18134, which is presented in Equation (2): Ev = 1.5 × r ×

Summary

Introduction

The permeable pavement system is a low impact development technology that can be used to mitigate the negative impacts of urbanisation on the water hydrological cycle.Permeable pavement systems have recently seen increasing use worldwide as an effective solution for controlling rainwater quantity and quality [1,2]. The high porosity of a permeable pavement system allows the infiltration of rainwater. This process allows for the filtering of pollutants associated with the rainwater. Permeable pavement systems can mitigate surface flooding and environmental pollution in urban areas [3]. The major design consideration of a permeable pavement system is its structure, which should satisfy the required mechanical and hydrologic characteristics [4]. The mechanical characteristics of permeable pavement systems are worse than those of conventional pavements owing to their high porosity [5]. To improve the mechanical characteristics of permeable pavement systems, geosynthetics have been used for reinforcement

Objectives

Results

Conclusion