MIXES AND STRENGTH CHRACTERISTICS OF DREDGED SOIL SOLIDIFICATION COMPOSITE

Abstract

 Dredged soil solidification composite used for blocks and artificial rocks for marine construction is manufactured by mixing dredged soil with steelmaking slag, ground granulated blast furnace slag and/or blast furnace cement, which is one of the effective utilization technologies for dredged soil. Nowadays, cementless solidification technology is often required due to the needs of fishermen and decarbonization, but in that case, it is necessary to reduce the mixing ratio of dredged soil and increase that of the binder, which consequently poses a problem of high costs of the solidification composite. In this paper, we examine the factors that reduce strength when dredged soil is mixed in high ratio, but also show that the above problem can be solved by adding slaked lime as an alkaline stimulant. In addition, we will report on the results of manufacturing real artificial rocks of dredged soil solidification composite using five types of compositions with varying mixing ratio of dredged soil, as well as the results of quality control tests.