In this study, a series of piezocone and dilatometer tests are performed on a cemented specimen prepared in a large calibration chamber in order to investigate how the cementation effect is reflected in the cone tip resistance (q_c) and the DMT indices (M_D, K_D). Although the q_c value and DMT indices increase with the cementation level, E_D is found to be more sensitive to the cementation than K_D and q_c. It is observed that the cementation of sand appears to have a more significant effect on the behavior of cemented sand at a lower stress level and its effect diminishes with an increasing stress level. It is also shown that the E_D/q_c ratio of cemented sand is always higher than that of uncemented sand at the same q_c, while the difference in the E_D/q_c ratio between cemented and uncemented sands decreases with an increase in q_c. The E_D/q_c−q_c relation suggested in this study can be used to verify that the soil sediment is cemented.