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Shear Strength Characteristics of Artificial Soil Mixture with Pond Ash  

Kim, Kyoungo (Infra Structure Research Team, DAEWOO E&C.)
Park, Seongwan (Dept. of Civil and Environmental Engineering, Dankook Univ.)
Publication Information
Journal of the Korean GEO-environmental Society / v.14, no.10, 2013 , pp. 39-47 More about this Journal
Abstract
Recently, there have been various domestic construction activities related to the reclamation of the dredged soils to expand the land use. However, the reclaimed grounds made of the dredged soils cause various problems due to highly compressible and low shear strength nature. Particularly, this nature induces huge problems in case of the harbor facilities and road construction on the reclaimed sites. Furthermore, in the reclamation activities, the marine dredged soils are often used instead of the well sorted sand, which induces problems of compressibilities. Therefore, in this study, the mechanical characteristics of artificial soil mixture of kaolinite representing the marine dredged soils and the pond ash. A large consolidometer is designed and manufactured to produce the artificial soil mixture. To represent various mixing ratio between the fly ash and bottom ash in the pond ash, six samples with the same stress history are made with different mixing ratio among kaolinite, bottom ash and fly ash. Isotropically consolidated and undrained compression tests are performed to investigate the shear characteristics of soil mixtures. Based on the experimental results, as the components of mixed ash increase, the friction angle increase and the cohesion values decrease. Also, the porepressure parameters at failure, Af increase with the mixing components of the pond ash. The portion of bottom ash has more impact on the shear behavior than that of fly ash.
Keywords
Shear strength; Pore pressure parameter; Dredged soil; Coal ash; Reclamation; Soil mixture;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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