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In this paper, a study on whether the use of polymer would affect the engineering properties of marine clay during and after the consolidation stage was carried out. A polymer, polyacrylamide (PAM) was used in this study. Unconfined compressive tests and permeability tests on PAM-treated soil were conducted. The testing results were compared with the results of untreated marine clay. The test results indicated that anionic PAM with 2.0 g/kg by dry weight dosage was the most effective for the sedimentation process of soil slurry with 200% water content. At this dosage, the volume of the slurry can be reduced by 29.3% within the first 2 hours in this study. The unconfined compressive strength of anionic PAM treated marine clay at 14 and 28 days were about 360% and 135% higher than that of untreated marine clay with the same curing time, respectively. However, the permeability reduced by an insignificant amount. A microstructural study was also carried out and the results show that after treatment, more edge-to-face contacts between soil particles were observed, which could be related to the increase in shear strength and the decrease in permeability of the soil.
Kou et al. (Fri,) studied this question.