New ground material made of dredged soil for port and airport reclamation projects

A large volume of quality soil is needed for the construction of ports, harbors, and also for the reclaimed land to build airports and industrial facilities. In addition, the disposal of dredged sail from rivers and harbors, as well as construction wastes, is a serious problem. Therefore, to responding to these needs a new ground material is developed by mixing dredged soil or sludge with cement to form stable ground material. The method involves adding water to the dredged soil or construction soil to transform it to slurry. Then by adding a hardener (such as Portland cement) and a lightening agent (such as bubble or beads), the final product can be used as fill material for harbor and airport reclamation work or as a backfill for quay walls. The treated soil reduces settlement of soft ground and lowers earth pressure behind the quay walls. This paper presents considerations for design and construction of the new ground material to be used as a guide for engineers involved in harbor and airport construction: coupled with an example of its application to a practical project.