ACI PRC-364.9-21

Should cracks in a concrete repair be of concern? Cracking can adversely affect the performance and service life of the repair, as cracks provide a more direct path for the ingress of deleterious elements into the repair, creating a durability concern. For structural repairs, cracks may adversely affect the repair performance and the load-carrying capacity of the repaired structure. Additionally, cracking may be an aesthetic concern. In consideration of the aforementioned, the licensed design professional should evaluate the cause(s) and consequences of cracks in the repair and, as needed, develop a remediation approach. If the cracks compromise the load-carrying capacity of the repaired structure, appropriate measures should be taken. ACI 562 requires cracking mitigation to be considered in repair design.