The key is not the spongy concrete, the key is where to get rid of the water once it enters the concrete. laying this sort of slab will involve designing a set of underground drain system which may be far more costly than letting the water run off to a side drain. Another important factor is the rusting of the inside reinforced steel mesh if any. I am sure Other engineers seeing this can add loads to this comment.
The key is not the spongy concrete, the key is where to get rid of the water once it enters the concrete. laying this sort of slab will involve designing a set of underground drain system which may be far more costly than letting the water run off to a side drain. Another important factor is the rusting of the inside reinforced steel mesh if any. I am sure Other engineers seeing this can add loads to this comment.
If the formula of this asphalt mix can be prowide