Effect of Salinity on Rheological Behavior of Cement-Treated Dredged Clays as Fills

Xu, Guangyu; Feng, Zhe-yuan; Yin, Jie; Han, Wenxia; Ahmed, Shoaib; Miao, Yang

doi:10.1061/(asce)mt.1943-5533.0003376

Cited by 8 publications

(1 citation statement)

References 33 publications

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“…7, where the slump ow can be expressed as a power function of dynamic viscosity with a coe cient of determination at 0.94. The result herein ts that of Xu et al [50] for a cement-treated dredge clay. The presented trend suggests that the straw could effectively reinforce the dredge slurry regarding the rheological properties.…”

Section: Viscositysupporting

confidence: 90%

Evolutionary Behaviors of Straw-Reinforced Slurry for Sustainable Management of Dredging Sediment: Rheological and Fertility Properties

Qiu,

Xu,

Geng

et al. 2024

Preprint

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This study evaluates the potential of using rice straw waste as a sustainable alternative for managing the dredge sediment. The rice straw was used to reinforce the dredge slurry to realize “treating the wastes with wastes”. The dredge slurry could be relocated with enhanced rheological properties or reclaimed cultivable land by in-situ management. In this framework, the rheological and fertility properties of straw-reinforced dredge slurry were investigated with a 90-day degradation period. The increased liquid limit and fine content were observed regardless of the straw content and degradation time, and a decreased slump flow and increased dynamic viscosity were obtained after the addition of straw. Nutrients, including SOC, TN, P, and K, increase over time after straw reinforcement, suggesting effective land reclamation by straw blending. The increases were abrupt in the first 14 days, followed by a gently increasing rate. Soil pH decreases over time to the range more suitable for planting. Results suggest that effective straw reinforcement enhances the rheological properties for relocating and improves the soil fertility for in-situ tillage. This study supplements the societal image of dredge materials and waste straws in engineering and environmental applications.

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Section: Viscositysupporting

confidence: 90%