Cracks detract from the appearance of concrete structures, and may indicate major structural problems. ACI 224R-01, Control of Cracking in Concrete Structures, covers the principal causes of cracking and also recommends crack-control procedures. The document also discusses the long-term effects of cracking. ACI
224R-01 is a revision of 224R-90. The updates include:
Discussion of fracture mechanics,
More information on controlling cracking caused by drying shrinkage,
Revised information on crack-width predictive equations, cracking in partially prestressed members, anchoragezone cracking, and flexural cracking in deep beams,
Crack control for concrete overlays, including fiber reinforcement and polymer-modified concrete, and
More extensive information on the structural consequences of cracking in mass concrete.