Engineering Commons^™

Mechanical Properties Of Saline Soil Solidified With Lime, Fly Ash And Modified Polyvinyl Alcohol Under Freeze-Thaw Cycles, Min Li, He-Miao Yu, Hong-Pu Du, Bao-Yu Cao, Shou-Xi Chai

Rock and Soil Mechanics

The repeated freeze-thaw cycles with seasonal alternations have an obvious effect on soil structure. To reduce the temperature sensitivity of saline soil and then use it in engineering, a combined treatment method is proposed, where lime, fly ash and modified polyvinyl alcohol (MPA) are used as solidified materials. Unconfined compressive strength (UCS) tests and microstructure characterization are firstly used to evaluate the solidified effect and obtain the parameters range of solidified materials. Then, the shear strength tests for determining cohesion and internal friction angle are conducted. Experiments are conducted by considering separate and combined treatments of materials mentioned above. The …