Dissertation > Industrial Technology > Building Science > Soil mechanics,foundation engineering > Foundation > Artificial foundation reinforcement > Earth Cushioning

Test Research on Characteristic of Solidified Structural Strength Increase for Dredger Fill

Author LiJiaChun
Tutor LeiXueWen
School Wuhan University of Science and Technology
Course Geotechnical Engineering
Keywords dredger fill of littoral facies hardener sedimentation column SEM microcosmic frame
CLC TU472.2
Type Master's thesis
Year 2010
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Following the highly development of economic, the built of infrastructure construction speed up in China. But facing the rapid development of urbanization and city infrastructure construction, people began to use artificial fill-up foundation and hydraulic fill to solve the problem of the limitation in land providing.Because it is vast of our country, different place has various level of economics development. Hydraulic fill constriction which use the sludge has the engineering advantage of having the high level of void ratio, compressibility, water content and low ability of bearing capacity. As such engineering advantages we mentioned above, so we need to carefully research the structural strength’s growth process of solidification in the hydraulic fill constriction. This Paper takes the dredger fill of littoral facies in the south area in our country as the object of study, and use the indoor triaxial test、sedimentation column、cylinder settlement experiment to do the comparative study of structural strength in the different experimental condition by using various hardeners. The Paper also use the SEM experiment to study the microcosmic evolvement rules of Research on reinforce dredger fill of littoral facies with sedimentation column.The works and conclusions of this Paper:Firs of all, I contract the effect of solidification by using several different common hardeners, and then get the best combined program.Secondly, I use the model of sedimentation column to do the Full-size condition research of the different structural strength establishment in various hardeners and drainage conditions,and then get the best dealing program.Thirdly, I use a lot of large tube of 2000ml to do the settlement observation in various hardeners and rates of water content, and then get the best mixing proportion of hardeners and the best condition of the rate of water content.Fourthly, I get the different SEM of undisturbed soil and dredger fill, and research this SEM to get the Microstructure characteristics of different soil patterns.Last but not the least, I Summarizes the results of this study and outlook the future directions and methods

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