Journal ArticleDOI
Sediment transport and pore clogging of a porous pavement under surface runoff
Reads0
Chats0
TLDR
In this article, the mechanism of sediment clogging in the pores of the pervious concrete pavement under surface runoff is preliminarily revealed, based on the modified permeability measurement system, a series of laboratory simulation tests are conducted to demonstrate the effects of porosity, sediment size, depth of free surface flow, storm water runoff velocity on the permeability reduction due to clogging of porous pavement.Abstract:
Drainage capacity of pervious concrete pavements will be greatly decreased once the pores become clogged. In this study, the mechanism of sediment clogging in the pores of the pervious concrete pavement under surface runoff is preliminarily revealed. Based on the modified permeability measurement system, a series of laboratory simulation tests are conducted to demonstrate the effects of porosity of pervious concrete, sediment size, depth of free surface flow, storm water runoff velocity on the permeability reduction due to clogging of the porous pavement. Within the scope of this study, the clogging is observed to more easily occur for specimens with large porosity, for well-graded sand as the clogging materials and large storm water depth. Horizontal runoffs has little influence on the final clogging ratio.read more
Citations
More filters
Journal ArticleDOI
Development of a sustainable pervious pavement material using recycled ceramic aggregate and bio-based polyurethane binder
TL;DR: In this paper, a new porous pavement material is developed by replacing natural aggregate with recycled ceramic aggregate and replacing bitumen with a bio-based polyurethane (PU) binder.
Journal ArticleDOI
Numerical study on pore clogging mechanism in pervious pavements.
TL;DR: In this paper, the authors used the computational fluid dynamics -discrete element method (CFD-DEM) model to numerically reveal the pore clogging mechanism and clogging development taking into account of the porosity of pervious pavements, sediments size distribution, the horizontal runoff velocity, and the seepage velocity.
Journal ArticleDOI
Defining clogging potential for permeable concrete.
TL;DR: Strong linear correlations between permeability decay, half-life cycle and number of cycles to full clogging are shown for the first time for a wide range of samples, indicating their use for service-life prediction.
Journal ArticleDOI
Investigation on the permeability of porous asphalt concrete based on microstructure analysis
TL;DR: In this article, the authors evaluate the influence of microstructure on drainability in porous asphalt concrete (PAC) and evaluate the effect of micro-structure properties on the drainability.
References
More filters
Pervious Concrete Pavements
TL;DR: In this paper, the authors describe how pervious concrete as a paving material has generated tremendous interest because of its ability to allow water to flow through itself to recharge groundwater and minimize storm water runoff.
Journal ArticleDOI
Characterizing Enhanced Porosity Concrete using electrical impedance to predict acoustic and hydraulic performance
TL;DR: In this article, the porosity and physical features of the pore network were characterized using Electrical Impedance Spectroscopy (EIS), which was found to be an inaccurate indicator of the electrical conductivity of the sample.
Journal ArticleDOI
Clogging of stormwater gravel infiltration systems and filters: insights from a laboratory study.
TL;DR: It was found that a clogging layer forms at the interface between the filter and underlying soil, irrespective of the inflow regime of both water and sediment, and that clogging is much slower if the water level is kept at a constant level than if it varies within the column.
Journal ArticleDOI
Permeability predictions for sand-clogged Portland cement pervious concrete pavement systems
TL;DR: A theoretical relation was developed between the effective permeability of a sand-clogged pervious concrete block, the permeable of sand, and the porosity of the unclogged block and the experimental results correlated well with the theoretical calculated permeability.
Journal ArticleDOI
Permeability measurement and scan imaging to assess clogging of pervious concrete pavements in parking lots
TL;DR: The combined scanned image analysis and porosity profile of the cores showed that most clogging occurs near the surface of the pavement, and lower porosity generally appeared to be limited to the upper 25 mm, but in some core samples evidence of lower Porosity was found up to 100mm below the surface.