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Elastic Wave Behaviors of Beta-Glucan Biopolymer-Treated Residual Soil
Biopolymers, which are polymers produced by living organisms, have been generally used in various fields such as medical, food, cosmetic, and medicine according to their mechanical and beneficial health properties. Recently, the utilization of biopolymer has been attempted for soil erosion control, aggregate stabilization, and drilling enhancement. However, the biological effect on the geotechnical behavior of soil has been poorly understood, although it is important for geotechnical engineering practice. In this study, an purified biopolymer (i.e., β-1,3/1,6-glucan) was used as an engineered soil additive to ordinary residual soil (i.e., a typical topsoil in Korea; hwangtoh). Micro (i.e., small strain) geotechnical properties of β-1,3/1,6-glucan-treated Korean residual soil were measured via nondestructive laboratory tests. In details, the elastic wave velocities of β-1,3/1,6-glucan treated soil were evaluated by using a piezoelectric sensor-embedded oedometric cell. P- and S-wave velocities were measured simultaneously with axial loading. The results show shear modulus increases as the β-1,3/1,6-glucan content in soil increases. Meanwhile, β-1,3/1,6-glucan treatment has no effect on the compressional stiffness of soil.
Elastic Wave Behaviors of Beta-Glucan Biopolymer-Treated Residual Soil
Biopolymers, which are polymers produced by living organisms, have been generally used in various fields such as medical, food, cosmetic, and medicine according to their mechanical and beneficial health properties. Recently, the utilization of biopolymer has been attempted for soil erosion control, aggregate stabilization, and drilling enhancement. However, the biological effect on the geotechnical behavior of soil has been poorly understood, although it is important for geotechnical engineering practice. In this study, an purified biopolymer (i.e., β-1,3/1,6-glucan) was used as an engineered soil additive to ordinary residual soil (i.e., a typical topsoil in Korea; hwangtoh). Micro (i.e., small strain) geotechnical properties of β-1,3/1,6-glucan-treated Korean residual soil were measured via nondestructive laboratory tests. In details, the elastic wave velocities of β-1,3/1,6-glucan treated soil were evaluated by using a piezoelectric sensor-embedded oedometric cell. P- and S-wave velocities were measured simultaneously with axial loading. The results show shear modulus increases as the β-1,3/1,6-glucan content in soil increases. Meanwhile, β-1,3/1,6-glucan treatment has no effect on the compressional stiffness of soil.
Elastic Wave Behaviors of Beta-Glucan Biopolymer-Treated Residual Soil
Chang, Ilhan (author) / Cho, Gye-Chun (author)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Technical Papers ; 1567-1575
2014-02-24
Conference paper
Electronic Resource
English
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