Comparison
How well do different permeable pavements perform when compared with each other? We found a thesis published by Mr. Cheng-Sung Wu titled An Efficiency Analysis of the Engineering Environment Affected by Permeable Pavements (2005). Mr. Wu studied and compared the difference between four types of permeable pavement: porous asphalt, grass bricks, permeable bricks, and JW Eco-Technology. Below is the data provided based on three different experiments --“one-hour-long rainfall stimulation,” “reduction of heat island effect,” and “load-bearing capacity.”
I.The first experiment involved an hour-long simulation of rainfall.
In terms of flood prevention, the JW Eco-Technology Pavement appears to have the highest water infiltration capacities and the highest water retention rate. It performed significantly better than the grass brick as well as permeable bricks, and it works slightly better than porous asphalt. With rainfall exceeding 100 mm over a period of an hour, the JW Eco-Technology had no runoff at all, and it was able to delay the water buildup up to 60 minutes (lag time). The result showed that the JW Eco-Technology offers the best solution to preventing flood.
II. His second experiment focused on reducing the heat island effect.
With regard to the heat island effect, the result showed that, although all four types of permeable pavement can reduce heat island effect, the JW-Eco Technology is the most effective pavement type.
III.The last experiment focused on the load-bearing capacity.
When concerning the load-bearing capacity, the result showed that the JW Eco-Technology had the slowest rate of sinking, indicating it is able to withstand greater traffic volume for a longer period of time compared with the other types of pavement.
From Mr. Wu’s thesis, we can see that the JW Eco-Technology pavement performs better than other types of pavement with regards to flood prevention, reduction of heat island effect, and load-bearing capacity.
Reference：
1. Wu, Cheng-Sung. (2005). An efficiency analysis of the engineering environment affected by permeable pavements.
By Gordan Huang