supported by the National Key Basic Research Program of China(973 Program)(Grant No.2012CB026106);National Natural Science Foundation of China(No.41672310);the Science and Technology Major Project of Gansu Province(Grant No.143GKDA007);National key research and development program(2016YFC0802103);the West Light Foundation of CAS for Dr.G.Y.Li,Project of the State Key Laboratory of Frozen Soils Engineering of CAS(Grant No.SKLFSE-ZY-16);the STS research project of the Cold and Arid Regions Environmental and Engineering Research Institute(HHS-TSS-STS-1502)
Compacted loess is widely used as fills of road embankments in loess regions of northern China.Generally, densely-compacted loess can satisfy the requirements of embankment strength and postconstruction deformation. H...