Effect of Composition on the Compressibility and Shear Strength of Dredged Cohesive Sediment

Progressively, more dredged sediments are being reused for engineering projects. For example, the Marker Wadden is a new wetland constructed in lake Markermeer, Netherlands, with cohesive originating from bed of lake. Such often dominated by sediment particles varying amounts sand and organic matter. In addition, during after construction process, material consolidates compressed very loose state into significantly denser condition. To assess mechanical behavior this material, compressibility Markermeer samples various matter contents was analyzed incremental loading oedometer tests, whereas undrained shear strength studied using fall cone test. The theoretically assuming fractal structure applying power law constitutive equations effective stress, hydraulic conductivity, strength. These equations, usually used at low initial densities, worked well relatively high densities proved to be useful tool identify transition fines content TFC. were put context indicators traditionally soil mechanics. Samples, each an identical composition fraction (particles< 63 μm), but 9 40%, showed same when considering filler material. natural 70%, sand. oxidation observed drastically decrease strength, even amount needed exhibit sand-dominated behavior, showing importance reactivity or on