oa Civil Engineering = Siviele Ingenieurswese - Crack-width design or axially-tensioned water-retaining reinforced concrete structures

Volume 3, Issue 10
  • ISSN : 1021-2000



Reinforced concrete water-retaining structures are designed to be non-cracking but it is doubtful whether the provisions of CP 2007 ensure this. If a structure does crack it is desirable that the width of crack will not exceed a safe value, i.e. a value which will not give rise to harmful corrosion of the reinforcement or excessive leakage. Small cracks tend to be self-healing if the environment is sufficiently moist. Theoretical and experimental investigations show that crack-width in an axially-tensioned centrally-reinforced prism is directly proportional to the stress in the steel at the crack, to the area of surrounding concrete, arid inversely proportional to the sum of the perimeter of the bars.

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