Harbor dredged marine sludge is used as a substitute for sand and gravel aggregates, combined with geopolymer cementitious materials to produce anti-wave blocks, artificial reefs, and precast concrete blocks for offshore wind turbine foundations. The dredged marine sludge is treated for harmless disposal and resource utilization.

Bulk industrial solid wastes such as steel slag and fly ash undergo grinding and chemical activation to achieve cementitious activity. These materials are then combined with tailings and harbor dredged marine sludge to manufacture large-scale anti-wave blocks and artificial reefs, integrating solid waste utilization with marine engineering.

Artificial reefs are constructed using steel slag and tailings, whose rich metal content—such as iron and manganese—provides essential nutrients for seaweed growth, promoting rapid attachment and the development of marine ecosystems. Nutrient-rich additives that enhance the proliferation of marine microorganisms are incorporated into the functional artificial reefs to further accelerate algal growth.

Using steel slag, blast furnace slag, and fly ash activated with additives to create a controllable cementitious material. Together with a slurry separator, it enables rapid water drainage and sedimentation, solidifying to form a strong foundation.