Effects of Chemical Additives on the Properties of Young Bay Mud |
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학술지명 Korean Geotechnical Society
저자 박동순
발표일 2012-09-27
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The sensitivity of fine-grained material is an important consideration for the analysis of geotechnical engineering, and can be influenced by the elements in the pore fluid saturating the clay. Chemical additives can be used to change the sensitivity as well as material properties typo: physico-chemical interaction in the pore fluid. The author investigated the changes in engineering properties and sensitivity of San Francisco Bay Mud (SFBM) with different chemical additives. Atterberg limits, hydrometer sedimentation tests, and fall cone tests were performed. As a result, the additions of NaCl, sea salt, CaCl2, Ca(OH)2, and cement increase the plasticity index while the addition of SHMP (Sodium Hexametaphosphate) lowers the plasticity index. As to the sensitivity by fall cone tests, CaCl2 reduced the sensitivities of wet bay mud, and other additives such as Ca(OH)2, cement, and SHMP increased the sensitivities. The sensitivity and material properties of bay mud may be effectively altered by introducing chemical agents at reasonable |