Control of concrete dams cracking
CONTROL OF CONCRETE DAM CRACKING

Control of concrete dams cracking

CONTROL OF CONCRETE DAM CRACKING When cement starts setting, heat of hydration is developed. Concrete dams are large masses of concrete. The heat of hydration is dissipated easily from the surface of the dam as the surface remains exposed to the atmosphere. It is very difficult to dissipate the heat of hydration from the interior of the dam. If some arrangement for this is not made, very high temperatures may develop inside the dam. The surface of the dam being cool and temperature in the interior being very high, cracks are likely to develop and cause difficulties. The dam may also develop surface cracks due to daily variation of the temperature at the surface. Surface cracks are not harmful for short durations but cause very bad effects in the long run. Water enters the surface cracks and solidifies to ice if the temperature falls down to zero. The ice thus…

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