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Fluid fracture interaction in pressurized reinforced concrete vessels
Abstract The water penetration and flow through cracks in reinforced concrete structures are investigated experimentally and numerically. First, wedge-splitting tests of reinforced concrete under strain control were performed. These specimens were subjected to a mechanical load, as well as to an internal hydrostatic pressure. Pressure along the propagating crack and flow rates were measured. Then, nonlinear fracture mechanics-based finite element simulations were performed. From this study, it was determined that the rebars on the outer side of the wall in concrete containment vessels are more effective in preventing leakage than are the inner ones. Furthermore, it was once again determined that the presence of a hydrostatic pressure reduces not only the fracture energy of concrete but also the bond between reinforcement and concrete. Finally, two analytical models are proposed.
Fluid fracture interaction in pressurized reinforced concrete vessels
Abstract The water penetration and flow through cracks in reinforced concrete structures are investigated experimentally and numerically. First, wedge-splitting tests of reinforced concrete under strain control were performed. These specimens were subjected to a mechanical load, as well as to an internal hydrostatic pressure. Pressure along the propagating crack and flow rates were measured. Then, nonlinear fracture mechanics-based finite element simulations were performed. From this study, it was determined that the rebars on the outer side of the wall in concrete containment vessels are more effective in preventing leakage than are the inner ones. Furthermore, it was once again determined that the presence of a hydrostatic pressure reduces not only the fracture energy of concrete but also the bond between reinforcement and concrete. Finally, two analytical models are proposed.
Fluid fracture interaction in pressurized reinforced concrete vessels
Shinmura, Akira (author) / Saouma, Victor E. (author)
1997
Article (Journal)
English
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