Slab Jacking

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Slab Jacking for Concrete Slabs

 

Slab jacking is the process that can raise a concrete slab back to its original position by pumping a mixture of sand, cement, and other additives beneath the slab. The most common reason why slabs may sink, can be a result of poorly compacted fill under the slab, sub-surface erosion, or shrinking soils. The slab jacking process is usually performed with the same type of equipment as cementitious pressure grouting.

Holes are drilled on a grid pattern in the concrete slab to reach the void under the slab. With the help of special pressure connectors (packers) the grouting equipment is connected to the holes. Grout is pumped under controlled pressures in a sequential manner in each hole until the concrete slab is lifted back to its original elevation.

 

Applications:

 

Buildings

Pulp and Paper Industry

Chemical Plants

Grain Terminals

Food Processing

 

Benefits:

 

Restores floor to original position

Cost effective repair

Quick process, minimizes plant downtime

Performance of the repair visually proven

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