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The ABS Crack Stitching System is an effective means of stabilizing the existing crack prior to an overlay system.
When movement occurs under an overlay system and cracks are present in the original slab, there is a possibility of movement at the crack. The stresses can be resolved and simply concluded that movement can occur in four directions:
- Tension - apart
- Compression - together
- Shear - sliding
- Rotation - twisting
Ideally the Crack Stitch material must be capable of restricting movement in all four directions and therefore must be 3-dimensional rather than 2-dimensional. ABS unique crack stitching metal strips are bent into a serpentine configuration to give the 3-dimensional characteristics of the material.
Consideration is also given to the protection of ABS Crack Stitching steel reinforcement strips from corrosion. The use of galvanized steel is its first protection. The type of material used to fill around the strip is a second protection. The coating above could be considered a third though it is possible that moisture intrusion could easily occur from below the slab.
ABS Crack Stitching White Paper