As one of the recycling methods for soft clay slurry, a technique called the cement-mixing and mechanical dehydration (CMD) method has been developed in the field of geotechnical engineering. CMD is enable us to manufacture high strength cement-mixing blocks and dehydrate clay with high water content. This study investigated water content, ignition loss and unconfined compressive strength of the soil treated by CMD and evaluated its strength and cement hydration properties in order to estimate the CMD treated cement blocks.