Investigation of engineering properties of liquefied stabilized soil reinforced fiber material

Dr. Do Tuan Anh*, B.A Vu Thi Ngoc Linh** – *Division of Quality Management, Hoa Binh University; **Faculty of Industrial Fine Arts and Architecture, Hoa Binh University

Tóm tắt:

In Japan, the Liquefied-Stabilized Soil (LSS), which is one of premixing cement treated-soil, has been popular as a recycling method for excavated soil. Meanwhile, in Vietnam, the soils excavated from construction sites are considered a serious problem. It becomes more and more difficult to find reclamation sites for disposing excavated soil. Because of the lack of reclamation sites, it causes the environmental pollution. Therefore, this serious problem can be solved if LSS will be applied in Vietnam. In general, LSS is made based on standard design chart of mixture proportion. Recently, in order to improve more advantages of LSS, there are some suggestions that LSS can be decreased a slurry density to reduced vertical earth pressure. However, there is a lack of study on strength and deformation properties of the LSS decreased to slurry density. In this study, influence of slurry density on strength and deformation properties of LSS reinforced with fiber material was discussed. A series of Consolidated-Undrained triaxial compression tests (CUB tests) have been carried out for some samples of fiber-reinforced LSS (at 0,10 kg/m3) prepared by two slurry densities at curing days of 28 days. It was found that the strength of LSS prepared by low slurry density decreased, and an effect of reinforcement was seen on strength and deformation of LSS prepared by low slurry density.

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Từ khóa: Liquefied-Stabilized Soil. strength, Deforemation, triaxial test, shurry density