A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Lateral permeability of pervious asphalt mixtures and the influence of clogging
Highlights The clogging test of permeable asphalt concrete (PAC) was designed. The particle gradation collected from urban road surface was analyzed. Variation of PAC permeability with clogging cycles were tested and analyzed. Vertical and lateral permeability of PAC and the influence of clogging were compared.
Abstract Lateral permeability of pervious asphalt concrete (PAC) plays an important role in the drainage performance of pervious pavements, especially for pavements with an impermeable base layer. The clogging of pores caused by sediment could significantly affect the permeability. To evaluate the influence of clogging on the lateral permeability of PAC, clogging test and permeability test were conducted in this study. The main influencing factors including porosity level of PAC, sediment particle size and gradation were taken into consideration. The test results show that a rapid reduction occurred in lateral permeability with the increase in clogging cycle, especially after the first clogging cycle. The permeable variation was found strongly related to particle characteristics. The permeability of PAC13-I (PAC specimens with an average porosity of 19.2%) easily decreased when large-sized particles of 0.3 ~ 2.36 mm were used. By comparison, the permeability of PAC13-III (PAC specimens with an average porosity of 23.5%) were easily influenced by small-sized particles of<0.6 mm. In addition, the lateral permeability was obviously weaker than vertical permeability for bigger clogging particles. However, long-term lateral permeability may be better than vertical permeability for finer particles in clogging sediments. Overall, these findings are helpful to the design and maintenance of pervious asphalt mixture.
Lateral permeability of pervious asphalt mixtures and the influence of clogging
Highlights The clogging test of permeable asphalt concrete (PAC) was designed. The particle gradation collected from urban road surface was analyzed. Variation of PAC permeability with clogging cycles were tested and analyzed. Vertical and lateral permeability of PAC and the influence of clogging were compared.
Abstract Lateral permeability of pervious asphalt concrete (PAC) plays an important role in the drainage performance of pervious pavements, especially for pavements with an impermeable base layer. The clogging of pores caused by sediment could significantly affect the permeability. To evaluate the influence of clogging on the lateral permeability of PAC, clogging test and permeability test were conducted in this study. The main influencing factors including porosity level of PAC, sediment particle size and gradation were taken into consideration. The test results show that a rapid reduction occurred in lateral permeability with the increase in clogging cycle, especially after the first clogging cycle. The permeable variation was found strongly related to particle characteristics. The permeability of PAC13-I (PAC specimens with an average porosity of 19.2%) easily decreased when large-sized particles of 0.3 ~ 2.36 mm were used. By comparison, the permeability of PAC13-III (PAC specimens with an average porosity of 23.5%) were easily influenced by small-sized particles of<0.6 mm. In addition, the lateral permeability was obviously weaker than vertical permeability for bigger clogging particles. However, long-term lateral permeability may be better than vertical permeability for finer particles in clogging sediments. Overall, these findings are helpful to the design and maintenance of pervious asphalt mixture.
Lateral permeability of pervious asphalt mixtures and the influence of clogging
Shan, Jingsong (author) / Feng, Shanshan (author) / Li, Feng (author) / Wu, Shuyin (author)
2020-12-08
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2015
Effect of clogging on the water permeability of pervious concrete
| British Library Conference Proceedings | 2010
Permeability Reduction in Pervious Concretes due to Clogging: Experiments and Modeling
| British Library Online Contents | 2010
Permeability Reduction in Pervious Concretes due to Clogging: Experiments and Modeling
| Online Contents | 2010
Effect of clogging and cleaning on the permeability of pervious block pavements
| Taylor & Francis Verlag | 2022