SGER: Soil Solidification by Magnetorheological Fluids

磁流变液(MRF)用于粗粒土壤暂时就地固化的潜在用途正在研究中。如果磁流变材料被成功地引入土壤的孔隙空间，并通过施加磁场进行固化，它们可以显著提高我们以最小干扰对饱和或干燥无粘性土壤进行取样的能力。超孔流体冷冻的成本节约可能非常显著。磁流变液未来在岩土工程中的其他潜在应用可能包括：稳定开挖和隧道施工中的土壤，控制渗流和污染物迁移，减少液化危险，控制机器振动，加速施工前沉降的土壤超载等。目前的探索性实验室计划将包括测试水力传导性、硬度、强度、振动引起的体积变化敏感性以及磁流变液加固土壤中明挖的稳定性。

The potential usage of magnetorheological fluids (MRFs) for temporary in-situsolidification of coarse-grained soils is being investigated. Should magnetorheologicalmaterials be successfully introduced into the pore space of a soil and solidified byapplication of a magnetic field, they could significantly improve our ability to samplesaturated or dry cohesionless soils with minimum disturbance. The cost savings overpore fluid freezing could be very significant. Other potential future applications of MRFsin geotechnical engineering may include: stabilization of soil for excavation andtunneling, control of seepage and contaminant migration, liquefaction hazard reduction,control of machine vibrations, soil surcharging to accelerate pre-construction settlementand others. The present exploratory laboratory program will include tests for hydraulicconductivity, stiffness, strength, volume change susceptibility due to vibration, andstability of open cuts in MRF-stabilized soils.