Concrete Crack Repair Techniques PowerPoint Presentation - (Download FREE!)

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Various types of Repair Methodologies are covered in this powerpoint presentation such as 

Read descriptions about each of them below

Stitching of Concrete

In this technique, the crack is bridged with U-shaped metal units called stitching dogs before being repaired with a rigid resin material. A non- shrink grout or an epoxy resin based adhesive should be used to anchor the legs of the dogs. Stitching is suitable when tensile strength must be re-established across major cracks. Stitching dogs should be of variable length and orientation.

Benefits Of Cracked Stitching

  1. Quick, simple, effective and permanent.
  2. The grout combination provides an excellent bond within the substrate.
  3. Masonry remains flexible enough to accommodate natural building movement.
  4. Non-disruptive structural stabilization with no additional stress


Muting And Sealing

This is the simplest and most common method of crack repair. It can be executed with relatively unskilled labor and can be used to seal both fine pattern cracks and larger isolated cracks. This involves enlarging the crack along its exposed face and sealing it with crack fillers. Care should be taken to ensure that the entire crack is routed and sealed.


Resin Injection

Epoxy resins are usually selected for crack injection because of their high mechanical strength and resistance to most chemical environments encountered by concrete.   Epoxies are rigid and not suitable for active cracks. This method is used to restore the structural soundness of members where cracks are dormant or can be prevented from further movements.



Underpinning is the process of strengthening and stabilizing the foundation of an existing building or other structure. Foundation underpinning is a means of transferring loads to deeper soils or bedrock.

Pit Underpinning

  1. To obtain additional foundation capacity
  2. To modify the existing foundation system
  3. To create new foundations through which the existing load may be wholly or partially transferred  into deeper soil
  4. To arrest the excessive settlement
  5. To improve the future performance of the existing foundations

When Is Underpinning Required?

Methods Used For Underpinning

Fire Damage Repairs

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