Er... mind if I chip in? I have just hung a heavy basin on a breeze block wall. My son aged 9 swings on it and there's no sign of any movement.
I went to a specialist fixings distributor and got a tube of 2 part quick setting resin. I drilled out two large holes. I bought a length of threaded bar and a couple of large nuts with washers and nylon washers. I cut the bar into 2 lengths about 6". I filled the holes with the resin, shoved in the pieces of bar while turning them so thast excess resin squeezed out all around. I supported the bars until the resein set. Then I bolted the basin to the wall, shimming the bottom carefully to get it sitting exactly level. It is so solid it is effectively part of the wall yet easily removable if need be.
I went to a specialist fixings distributor and got a tube of 2 part quick setting resin. I drilled out two large holes. I bought a length of threaded bar and a couple of large nuts with washers and nylon washers. I cut the bar into 2 lengths about 6". I filled the holes with the resin, shoved in the pieces of bar while turning them so thast excess resin squeezed out all around. I supported the bars until the resein set. Then I bolted the basin to the wall, shimming the bottom carefully to get it sitting exactly level. It is so solid it is effectively part of the wall yet easily removable if need be.