Secondary consolidation of soft soils in salt-affected conditions related to sea lever rise, case study: hanoi soft soils

Nguyen Van Vu, Nguyen Ngoc Truc


In the scenario that inland areas along a coastline are affected by saline water, ground consolidation and deformation arechanged. The authors simulated the influence of saline intrusion to ground on geotechnical properties of soils by a case study of soft soils at 9 sites in Hanoi. Specimens were processed by making saturation with artificial seawater of four salt concentration levels, followed byexperiments using X-ray diffraction and one-dimensional consolidation. The results showed that the secondary consolidation  is increased in the Hanoi salt-affected soft soils. The higher salt concentration of saturated solution is applied, the higher deformation occurred. This was interpreted based on clay minerals composition present in the soils.


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soft soil, salt-affected soil, Hanoi clay, secondary consolidation, coefficient of secondary compression

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