EXPERIENCE WITH THE USE OF METHYLCELLULOSE AS A VISCOUS PORE FLUID IN CENTRIFUGE MODELS. TECHNICAL NOTE
EXPERIENCE WITH THE USE OF METHYLCELLULOSE AS A VISCOUS PORE FLUID IN CENTRIFUGE MODELS. TECHNICAL NOTE
复制标题
在离心机模型中使用甲基纤维素作为粘性孔隙流体的经验。
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
BL Kutter
中科院分区：
文献类型：
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作者：
R. Chaney;K. Demars;DP Stewart;Y;BL Kutter
粘度大于水的孔隙流体有时用于岩土离心机模型测试中，以在模拟动态加载事件时更准确地满足与孔隙流体穿过土壤的运动相关的比例定律。这通常使用硅油或水和甘油的混合物来完成。使用硅油有一些缺点，本文介绍了最近投入使用的羟丙基甲基纤维素 (HPMC) 水溶液的替代溶液。作者提供的测试数据显示了溶液粘度随浓度和温度的变化以及比重随浓度的变化。流体的相对性能通过涉及地震模拟的两个离心机模型测试的孔隙压力耗散数据来说明。一项测试使用纯水作为孔隙流体，另一项测试使用粘度为水十倍的 HPMC 溶液进行。
Pore fluids having viscosity greater than water are sometimes used in geotechnical centrifuge model tests to more accurately satisfy the scaling laws relating to movement of pore fluid through the soil when modeling dynamic loading events. This is frequently done using either silicone oil or mixtures of water and glycerol. There are some drawbacks in using silicone oil and this paper describes an alternative solution of hydroxypropyl methylcellulose (HPMC) in water that has recently come into use. The authors present test data showing the variation in solution viscosity with concentration and temperature and the variation in specific gravity with concentration. The relative performance of the fluid is illustrated with pore pressure dissipation data from two centrifuge model tests involving earthquake simulations. One test was done with pure water as the pore fluid and the other test was done with an HPMC solution having viscosity ten times that of water.