Cracking of concrete repair materials is a critical factor affecting the service life of a repaired structure. Cracks in repair materials provide a pathway for moisture to carry deleterious materials into the concrete and accelerate corrosion of imbedded reinforcement. Existing cracks can also fill with water and cause further crack propagation as well as accelerated deterioration due to freezing and thawing conditions. While shrinkage is a significant factor contributing to cracking, the impact of other properties such as tensile strength, creep, and modulus needs to be considered. ASTM C 1581 takes into account combinations of these material properties and can be used to select materials with a low likelihood of cracking.

Subject
Concrete repair, Water, Materials, Mortar, Stress cracking, Shrinkage, Repair, Tensile strength, Cement, Creep, Cracking, Drying, Concrete
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2007
Association for Materials Protection and Performance (AMPP)
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