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Study on Stabilization of Soils with Enzyme X-22 and White Lime-Fly Ash

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Tutor: CaoYongMin
School: Dalian University of Technology
Course: Building Materials
Keywords: highway,pavement,road base,road sub-base,stabilizer,soil stabilization,enzyme X-
CLC: U414
Type: Master's thesis
Year:  2002
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Abstract:
The characteristics of common soils in Dalian are studied ,and enzyme X-22 which has been used well in the developed country such as USA and Canada and other stabilizers are mixed into soils, so that the mixture has the suitable properties to meet the requirement for the road base or road sub-base in the highway construction.With the experiments on the characteristics of soils and stabilizers, the types of stabilization and gelling materials, the experiment results show that the enzyme-white lime-fly ash-soil system is the most effective. After determining the properties of the enzyme X-22, white lime and fly ash, and testing the functions of the stabilizers, both single and together used, the most fitful mix ratio is determined. And then all kinds of the performance are tested and satisfy the requirement of the specification. The mechanism of stabilization and the strength creasing of the mixture are studied with the help of the results of XRD and SEM photos. The modulus of the mixture is also tested and checked by the engineering design.These studies explore the new method of the soil stabilization with the enzyme X-22 in China, and maybe benefit for the road construction in China.
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