*3.2. Back Analysis of Constitutive Relationship Equation through Centrifugal Experiment*

The centrifugal test is applied to carry out a one day long self-weight consolidation of dredged/reclaimed clay in foreign and domestic scenarios because it can surmount the limitations of consolidation time and initial height through a back-analysis study using the time-settlement results of the test. The back analysis using the centrifugal experiment is explained as a flowchart in Figure 9. The equipment used for the centrifuge test in this study was from the Kangwon National University in Korea. The centrifugal experiment was carried out 2–4 times under different initial void ratio and height conditions for each specimen, and then a constitutive relationship equation was estimated through the back analysis from the experimental results. The experimental conditions such as test number, gravity acceleration, initial void ratio, and constitutive relationship equations analyzed by the back analysis for each region specimen are shown in Table 2. Numerical analysis for the self-weight consolidation test in the flowchart was performed by the microcomputer program 'Primary Consolidation, Secondary Compression, and Desiccation of Dredged Fill' (PSDDF) by Stark et al. [3,4].

**Figure 9.** Flowchart of back analysis of constitutive relationship using the centrifugal experiment.


**Table 2.** Centrifugal experimental conditions and results.
