Concrete Repair

Kiss of life

Nyrstar Plinths







Crack Repair
As a result of shrinkage, structural or thermal movement concrete is prone to cracking in varying degrees of severity, from relatively inactive hairline flaws through to major faults and fractures resulting in structural weaknesses that greatly increase the risks of corrosion and ultimate failure.
The need for effective solutions for each category of faults is paramount to the long term durability and stability of the substrate. This is achieved through several repair methods:

1) Crack Injection
Crack injection method provides a non-disruptive solution by injecting epoxy or polyurethane resins in the void via a low-pressure injection system.
Crack injection is also suitable for overhead, vertical and horizontal fractures and flaws

2) Flexible Membranes
As opposed to the isolated repair methods above the use of a flexible liquid membrane provides a protective covering over the surface area encapsulating and protecting the substrate. These systems are in general specified where a waterproofing solution is desired as a result of wide spread cracking.

Slab Jacking
Slab jacking is the process of injecting high density foam into the sub-base at a sufficient pressure as to allow the reacting foam to expand and realign the floor surface.

This method is effective in the re-alignment and stabilisation of concrete slabs which have sunk as a result of sub-base movement, soil erosion or settlement.  

The methodology of slab jacking is highly effective and non disruptive and suited to a vast range of applications.

The above list of techniques is not exhaustive and it is more than likely that a strategy will involve a combination of methods. However, when selecting repair techniques, aspects must be considered other than just the technical.

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