Model tests of freeze-thaw behavior of geocell-reinforced soils

摘要: Abstract Freeze-thaw cycles are a major cause for destabilizing pavements in cold regions. Among countermeasures freeze-thaw damages, use of geocells to reinforce pavement bases is an effective solution practice. However, as opposed widespread applications, research concerning behavior geocell-reinforced limited, probably due lack proper devices conducting experimental tests. This paper presents new model-test device capable performing both tests and plate loading on soils. A thermodynamic numerical model was developed assist with the design component device, while by referring features existing devices. Eleven were run unreinforced sands confirm effectiveness proposed device. The test results showed successfully provided vertical heat transfer during freeze thaw. After five cycles, reduced peak frost heave thaw settlement 18% 34%, respectively, increased stiffness bearing capacity 40% 253%, respectively. It found temperature drop occurred at interface between cooling sands, which existence thermal contact resistance.