Abstract
The objective of this study is to investigate the water seepage in unsaturated concrete under pressure through theoretical derivation. To establish the theoretical mode of water pressure and seepage velocity various with location and time. Finally, a formula about penetration depth is derived. And it is more practical. Meanwhile, analysis is made about the effect of the water pressure, the strength grade, permeability and relative permeability and other factors on the flow velocity and penetration depth.
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