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Water Pressure Numerical Analysis of Lining Structure in Mountain Tunnel
Lining Mountain Tunnel Numerical Analysis Seepage Water Pressure
2011/12/20
It is hard to control the high pressure water in mountain tunnel construction. Distribution of seepage field, stress field and displacement field of tunnel are analyzed by numerical method with equiva...
Hydrothermal Crystallization of Ammonium-Saponite at 200C and Autogenous Water Pressure
Cation Exchange Capacity Saponite Synthesis X-ray Diffraction X-ray Fluorescence
2011/12/1
Abstract: The effects of reaction time (2 to 72 h) and NH4+/Al3+ molar ratio (1.6, 2.4 and 3.2) on the hydrothermal synthesis of ammonium-saponites are investigated. The gels are obtained by mixing po...
Synthesis and Paragenesis of Na-Beidellite as a Function of Temperature, Water Pressure, and Sodium Activity
Beidellite Electron microprobe Hydrothermal synthesis Kaolinite Paragonite Pyrophyllite Scanning electron microscopy X-ray diffraction
2011/12/30
In the chemical system Na2O-Al2O3-SiO2-H2O, the stability field of Na-beidellite is presented as a function of pressure, temperature, and Na- and Si-activity. Na0.7-beidellite was hydrothermally synth...