A new method to construct a liquefaction-free reclaimed land, called the Pre-mixing method, has been developed. As a part of the study on this method, the strength and deformation characteristics of the cement treated sands are investigated. The treated sands used for the experiment are prepared by mixing 5.5% to 12% of cement with sands. The main conclusions are: (1) The cohesion added to the cement treated sands depends on the amount of cement, the density of the treated sands and the type of the original sands. (2)The friction angle of the treated sands is almost equal to or a few degree larger than that of the original sands. (3) The cement treated sands reveal slightly brittle nature and the axial strain at failure becomes smaller than that of the original sands. (4) The strength parameters obtained from the consolidated-drained (CD) triaxial test can be adopted to the stability analysis of structures on the cement treated reclaimed land.