Calculation of Leakage volume of water throuch Crack.

Keyword

Concrete,Crack,Leakage,Hydraulic head,Viscosity coefficient,Density,water.

Reference

・[1]:Naohito Watabe:『A Study on Watertightness of Reinforced Concrete Pit for Land Disposal of Radioactive Wastes』.
・[2]:社団法人日本建築学会:『原子力施設における建築物の維持管理指針・同解説』,丸善,2008.

Remarks

・t:Width of crack.
・t0:Width of crack in limit where water penetration is not caused.
・H:Hydraulic head.
・D:Thickness of concrete.
・η:Viscosity coefficient of water.
・ρ:Density of water.
・σ:Crack constant.Value that corresponds to apparent extension magnification in stream length according to winding of void of crack.It is different according to the shape of the crack.

History

・2010/02/16:Renewal.
・2009/03/15:Upload.