Indian Steel Association’s Post

Cracks smaller than 0.3 mm are generally not serious, but they should be monitored for any growth. Cracks wider than 0.3 mm may indicate structural durability issues. Small, thin cracks usually don't cause problems and can be left alone. However, cracks wider than ⅛” should be sealed with a concrete caulk to prevent them from getting worse. To prevent concrete cracks, you can: Use a proper concrete mix with the right water-cement ratio Use high-quality materials Follow proper finishing procedures and timing Cure the concrete properly Place and vibrate the concrete correctly Install control joints to accommodate shrinkage .

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The homogeneity of the concrete The presence of cracks, voids and other imperfections, depth of crack Changes in the structure of the concrete which may occur with time The quality / compressive strength of concrete of one element in relation to another element / standard requirement The values of dynamic elastic modulus of concrete

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