Hydraulic Bursting is a near silent and impressive method of removing concrete walls or floors. In situations where excessive noise is an issue, as with prolonged breaking with percussive tools or with machines, bursting is the perfect solution. Typically 112mm diameter holes are drilled into the concrete. The layout and number of these holes is determined by the size, depth and strength of the concrete. A directional hydraulic head is then inserted into the hole and tremendous force exerted onto the concrete to induce cracking.Cracks will ultimately be induced between all the holes. 1nr 100mm head exerts 110 tons of pressure, 1nr 200mm head exerts 250 tons of pressure.
For thick and heavily reinforced concrete a series of heads are used in unison to produce the desired cracks. Shims are normally inserted into the holes to allow the weakened concrete to be burst again and enlarge the cracking until the reinforcement can be cut out to free sections of the concrete. This technique once seen is never forgotten.
Plinths that have been cast onto or into ground floor slabs can also be removed by bursting.