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Field application estimation of waste soil reuse in pre drilling

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Document pages: 9 pages

Abstract: The design criteria of structural foundation of cement soil injection precast pile (SIP) show that cement emulsion obtains a conservative high compressive strength. In addition, due to the high water cement ratio, a certain amount of cement slurry will be lost to the surrounding soil. In addition, the cost increases due to the need to export materials to the outside of the construction site to dispose of waste soil. The purpose of this study is to develop a new mixing method, which uses site soil and cement hardener to replace part of cement slurry. The applicability of this method is verified by checking the basic physical properties of the new material through the field test of dynamic pile load and bonding capacity. The experimental results show that the new Flling material reduced the bleeding and reduced the loss of filling material when compared to cement milk, but the compressive strength and the results of the dynamic pile loading and bond capacity tests were lower than those obtained for cement milk. However, the new filling material satisfies the standard criterion for structure design, and the economic benefits of implementing the proposed method, including saving on the amount of cement used and reducing the costs of transporting waste soil, were confirmed.

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