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      • 모래-벤토나이트 혼합물의 지반 공학적 특성에 관한 기초 연구

        권무남 ( Kwon Moo Nam ),유택항 ( Yu Taek Hang ) 한국농공학회 1997 韓國農工學會誌 : 전원과 자원 Vol.39 No.6

        The study was conducted in order to investigate the basic geotechnical properties of sand-bentonite mixtures with the various bentonite contents. The results obtained are as follows: 1. Optimum moisture content of sand-bentonite mixtures was approximately 17.10~18.52% corresponding to the maximum dry density of 1.58~1.64gf/cm<sup>3</sup>. As the bentonite contents and curing peroid increased, both the maximum dry density and optimum moisture content of sand-bentonite mixtures increased. 2. The unconfined compressive strength of sand-bentonite mixtures increased as the increase of bentonite content, but it did not change along the curing period. 3. The sand-bentonite mixtures ruptured at 8~15% of the axial strain and the maximum shearing stress was about 0.70kgf/cm<sup>2</sup>. 4. According to the increase of bentonite content, the cohesion intercept and internal friction of the sand-bentonite mixtures increased slightly in the shear test, while the cqhesion intercept increased largely, and the internal friction angle decreased largely in the triaxial test. 5. Both the initial void ratio and swelling of the sand-bentonite mixtures were very low with respect to the consolidation pressure increase. 6. The swelling and shrinkage of sand~bentonite mixtures increased slightly according to the increment of bentonite content.

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