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About: Crack spacing of reinforced concrete     Goto   Sponge   NotDistinct   Permalink

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Concrete is a brittle material and can only withstand small amount of tensile strain due to stress before cracking. When a reinforced concrete member is put in tension, after cracking, the member elongates by widening of cracks and by formation of new cracks. Ignoring the small elastic strain in the concrete between the cracks, we can relate the crack width to the strain of the member by: