Development of a geomaterial from dredged bay mud

The lack of construction materials in the coastal areas and the high cost o f importing good-quality soil creates the need for developing new technolog ies to manufacture engineered fills using low-quality materials obtained fr om a seabed. This study presents results of a series of tests conducted to obtain held data related to basic engineering properties of a geomaterial c omprised of the mud dredged from Tokyo Bay, mixed with lightweight additive s, such a foam or expanded polystyrol beads, and portland cement as a binde r. Due to discrepancies that may exist in laboratory-prepared samples, a fi eld study was launched to replicate the actual construction conditions. Rel ationships are developed to correlate various engineering properties of the geomaterial in terms of Strength, modulus of elasticity, and deformation c haracteristics.