Strength Model of Unsaturated Clays with Adsorptive Effects

Modelling of Viscous Effects in Natural Clays

A Four Elements Porous Model to Estimate the Strength of Unsaturated Soils

One of the most successful relationships for effective stresses on unsaturated soils was proposed by Bishop in the middle of the last century. However, only recently Bishop ́s effective stress equation has been implemented in various constitutive models for unsaturated soils. These models have the advantage of naturally include the coupling between the hydraulic and the mechanical behavior exper...

Ceramic Properties of Pugu Kaolin Clays. Part 2: Effect of Phase Composition on Flexural Strength

Whiteware compositions prepared using Pugu kaolin and industrial grade quartz and feldspar were studied with respect to varying sintering temperatures. The strength developed was correlated to mullite (3Al2O3.2SiO2) content and the microstructure. It was observed that within the vitrification temperature range, the strength mainly depended on the mullite content and the bulk density. Above the ...

Effect of Salt Solution and Plasticity Index on undrain Shear Strength of Clays

Compacted clay liners (CCLs) are the main materials used in waste disposal landfills due to their low permeability. In this study, the effect on the shear resistant of clays with inorganic salt solutions as permeate fluid was experimentally investigated. For this purpose, NaCl inorganic salt solution at concentrations of 2, 5, 10% and deionized water were used. Laboratory direct shear and Vane ...

Model for Competitive Adsorption of Organic Cations on Clays

-The adsorption on montmorillonite of two monovalent organic cations, methylene blue (MB) and thioflavin T (TFT), was studied in four different situations: (1) separate adsorption of MB or TFT; (2) competitive adsorption of TFT and Cs; (3) competitive adsorption of the two organic cations from their equimolar solutions; and (4) adsorption of TFT on a clay whose cation-exchange capacity (CEC) ha...