Physicochemical effects of pore fluid on the dynamic behavior of reconstituted marine clay

Abstract

An experimental investigation was conducted to study the effect of pore fluid chemistry on the dynamic behavior of reconstituted marine clay. Sodium chloride solution of 0.4 M and 1 M concentrations was used to induce the physicochemical changes. Strain-controlled undrained cyclic triaxial tests were carried out to evaluate the most important parameters such as shear modulus and damping ratio at a large strain range. The results showed that the effect of pore fluid was more pronounced on cyclic shear modulus values at a strain amplitude of 0.3–1%. Tests were also conducted to study the effect of physicochemical factors on the degradation of normalized modulus G_N/G₁ of marine clay specimens reconstituted with distilled water and salt solutions.

Keywords:

• Physicochemical factors
• static shear strength
• cyclic properties
• marine clay

Disclosure statement

No potential conflict of interest was reported by the authors.