Aug 23, 2014 · 3,176 Posts. #6 · Aug 22, 2014. That existing wall is what's called split face block. It's basically just concrete blocks where the face has been randomly split from another one during the manufacturing process. Quite often the surface is sealed or stained after installation.Hydraulic Concrete Splitter concrete And Rock Splitter. Powerful Concrete and Rock Splitter Mining Machine Zt450 Description: 1. split process without vibration, no impact, no noise, no dust, split within a few seconds toplete 2. single machine maximum split force up to 480 tons, high efficiency, can control the split, demolition, split size accuracy 3. lightweight, simple …The areas of application for Betonamit® for concrete demolition are practically unlimited. It is possible to determine from the outset what the size of the pieces should be, as well as which direction the cracks should run in, through the number and positioning of the drill holes.Nov 16, 2019 · Using a strong drilling machine, make narrow holes in the concrete slab or rock surface. You must make multiple holes depending gon the surface area of the rock you wish to split. There should be spaced to allow enough room for the rock to crack. Once you have made the holes, blow them with some air to free it from any lodged derbies or dust.