Posted: 12/03/2016 at 08:59
Built a distance away, as alongside a main road with the noise all coming from one direction and where it skirts a housing development, a gabion wall with stone at the surface and a softer/dense material filling the inner will work. But it is the dense material in the inside of the gabion that absorbs the sound. The stones are there to provide the structure.
I feel that when you're dealing with a noise source that is close by, and surrounded by buildings with brick walls which will bounce the sound around, soft surfaces which absorb sound will work better.
I may be wrong but it's what I would do.