Pervious Concrete Retaining Walls
I was introduced to pervious concrete at a GreenBuild Conference last winter. Cool stuff for flat work. I’m wondering if I could use it on retaining walls up to about 4′ tall. The advantage in my mind would be that there would be no need (?) for drainage behind the wall, and that the water that perked through would feed an interesting assortment of moss and lichen that one could grow on the face for additional texture.
The concern I have is that the concrete would have less compressive strength, and that the rebar would be exposed to corrosion. These two factored together might lead to structural issues in subsequent years.
Anybody out there have any thoughts or experience on this one? Thanks in advance.