Abstract: The deformation and shear strength of lateritic clay are studied by compaction tests and shear tests.The studies show that the maximum dry density of remolded red clay is generally greater than that of undisturbed red clay;however,the optimum moisture content of the former is less than that of the latter.With the increase of compaction energy,the dry density of specimens increases,and the optimum moisture content decreases.When the moisture content increases slightly(compared with the optimum moisture content),the water-sensitivity is better than that of the drier specimens.The compression deformation of compacted specimens with higher moisture content is greater than that of the specimens with lower moisture content;however,due to the inundation of specimens,the deformation of specimens with lower moisture content will be greater than that of the specimens with higher moisture content