Development of liquefaction resistance performance technology using biopolymer

抄録

To prevent liquefaction, various preventive measures using cement such as consolidation process and grouting have been proposed. However, since liquefaction prevention measures using cement cause environmental problems such as groundwater pollution and increased carbon dioxide emissions, it is necessary to develop eco-friendly ground reinforcement materials. Biopolymer, an eco-friendly ground reinforcing material, is a material made through the biological activities of microorganisms, and when reinforced in the ground without damaging the vegetation environment, it has the effect of improving shear strength, water-repellent properties, vegetation, and erosion resistance increase. Accordingly, it is expected to increase the resistance to prevent liquefaction, but research on this is insufficient so far. Therefore, in this study, the effect of enhancing the liquefaction resistance strength of the biopolymer-treated samples was evaluated through the cyclic triaxial test. For the experimental conditions, the liquefaction resistance strength according to the type of biopolymer was evaluated, and the liquefaction resistance strength was compared with the untreated sample. Through the experiment, the liquefaction resistance strength enhancement ratio was evaluated according to the untreated sample, and the biopolymer effective in enhancing the liquefaction resistance strength was identified. Through this, the biopolymer is expected to be used to improve the liquefaction resistance strength in areas where liquefaction can occur.