Indoor scale-down test and quick-crusting test were done to simulate sedimentary situation of dredger fill. Those were dosimeter-sediment test and sediment column test. Unit weight

void ratio and water content under different soil-water ratios and different additives of dredger fill have been determined. According to these data

subsidence of dredger fill-grout in standing water can be divided into two stages: fine-particle flocculation stage and mud self-weight consolidation stage

which laid foundation for further study on characteristics of sedimentation of dredger fill.