Influence of interlayer cations on the water sorption and swelling–shrinkage of MX80 bentonite

Montes-H, G.; Duplay, Joëlle; Martínez, Lizeth; Géraud, Yves; Rousset-Tournier, B.

doi:10.1016/s0169-1317(03)00130-3

Cited by 92 publications

(41 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Following an equivalent procedure-i.e., using ESEM combined with digital image analysis, Montes-H et al (2003b) studied at microscopic scale the swelling-shrinkage behaviour of a Ca-saturated bentonite when subjected to a wetting/drying episode. The study was complemented at macroscopic scale by determining the water retention properties of the same bentonite following equivalent hydraulic paths and using vapour equilibrium technique.…”

Section: Esem Applications Monitoring Microstructural Changes Along mentioning

confidence: 99%

See 1 more Smart Citation

Microstructure Investigation in Unsaturated Soils: A Review with Special Attention to Contribution of Mercury Intrusion Porosimetry and Environmental Scanning Electron Microscopy

2008

View full text Add to dashboard Cite

With the advent of modern microstructural testing techniques and microstructure based constitutive models the microstructural characterisation of soils is gaining prominence. This paper reviews the history of microstructure investigation in unsaturated soils and discusses the engineering significance of this research to date. After a brief overview of the main microstructural techniques, the paper focuses on the evaluation of the current state of use and the development of two widely used techniques to study the microstructure of partially saturated soils, namely mercury intrusion porosimetry and the environmental scanning electron microscopy. The details of these techniques, their advantages and limitations, are first covered, followed by the presentation of selected test results. These results highlight the use of these techniques for understanding different hydro-mechanical behavioural features observed at macroscopic scale. Specifically, the paper shows the use of these techniques to explore the fundamental properties of water retention characteristics, water permeability, and micro and macrostructural interactions along different hydro-mechanical paths.

show abstract

Section: Esem Applications Monitoring Microstructural Changes Along mentioning

confidence: 99%

“…17 Reversible swelling-shrinkage response of a Casaturated bentonite using ESEM and digital image analysis (lower plot). Reversible water retention properties obtained at macroscale on the same bentonite following equivalent hydraulic paths (upper plot) (adapted from Montes-H et al 2003b) …”

Section: Summary and Concluding Remarksmentioning

confidence: 99%

Microstructure Investigation in Unsaturated Soils: A Review with Special Attention to Contribution of Mercury Intrusion Porosimetry and Environmental Scanning Electron Microscopy

2008

View full text Add to dashboard Cite

show abstract

“…Twenty grams portions of the clay were treated with 1 mol·L -1 NaCl solution. The suspension was vigorously shaken at room temperature with magnetic agitation for 1 h. Then, the cation-saturated montmorillonite was separated by centrifugation (30 min at 19,000 rpm) and decantation of the supernatant solutions [17]. This process was repeated three times.…”

Section: Methodsmentioning

confidence: 99%

High Resolution Gas Adsorption Study on Montmorillonite Clays from Côte d’Ivoire: Assessment of Surface Energetic Properties

Kpangni¹,

Andji²,

Adouby³

et al. 2012

MSA

View full text Add to dashboard Cite

The surface heterogeneity of two samples of montmorillonite clays from Katiola (Côte d'Ivoire), referenced K 1 and K 2 , has been explored by low-pressure of argon and nitrogen adsorption at 77 K. The adsorption isotherms of the studied samples have been modelled by the Derivative Isotherms Summation method (DIS method) in a satisfactory manner, with the help of local isotherms to argon and nitrogen. The use of the DIS method allowed us to quantify the basal and lateral surfaces, then to determine the total surface of studied materials. Beyond the quantitative aspect, the DIS method permitted us to determine the lamellarity index of the clay grains and to describe the two studied samples of a family of high energy site (-14 kT to nitrogen), that shows a strong affinity for the polar adsorbates.

show abstract

“…Kaolinite, acidified illite and degraded chlorite has the expansibility. Hence, a complex cracking (opening/closing of cracks) is characteristic for the loess (Montes-H et al 2003;Montes et al 2004). …”

Section: Cracksmentioning

confidence: 99%

Cracking and water seepage of Xiashu loess used as landfill cover under wetting–drying cycles

Wang

et al. 2015

Environ Earth Sci

View full text Add to dashboard Cite

This paper intends to investigate the antiseepage characteristics of Xiashu loess used as landfill cover under wetting-drying cycles. A series of tests were performed to systematically evaluate the surface cracks, pores, the hydraulic conductivity and water seepage of the soil under wetting-drying cycles. The cracking tests indicated that the cracking intensity factor (CIF) increased with the number of wetting-drying cycles. After three wettingdrying cycles, the CIF gradually reached a stable value. The influence of the compactness of the compacted clay was significant to cracking. After four drying-wetting cycles, the CIF of compacted clay with relatively low compactness (q = 1.65 g/cm 3 , W 5 = 25 %) was 0.15, and the CIF of compacted clay with higher compactness (q = 1.65 g/cm 3 , W 3 = 21 %) was only 0.06. With the increase in the number of wetting-drying cycles, the accumulated pore volume of the soil particles increased and the maximum pore size was nearly unchanged. After four drying-wetting cycles, the proportion and average diameter of macro-pore in the soil particles were both increased. However, the proportion and average diameter of the meso-pore slightly decreased. Furthermore, the proportion and average diameter of the micro-pores were unchanged. After four wetting-drying cycles, the hydraulic conductivity of the compacted soil was at 8.3 9 10 -7 -1.5 9 10 -5 cm/s, which was increased about three orders of magnitude compared with the compacted soil without cracks. The hydraulic conductivity of compacted soil increased linearly as cracks increased. The hydraulic conductivity of compacted soil also gradually increased to a stable value as the pore volume increased. After 1 month of wetting-drying cycles, the cracks of soil with low compactness had extended to a depth of 15 cm below the soil surface while the cracks of soil with higher compactness only reached a depth of 5 cm.

show abstract

Influence of interlayer cations on the water sorption and swelling–shrinkage of MX80 bentonite

Cited by 92 publications

References 6 publications

Microstructure Investigation in Unsaturated Soils: A Review with Special Attention to Contribution of Mercury Intrusion Porosimetry and Environmental Scanning Electron Microscopy

Microstructure Investigation in Unsaturated Soils: A Review with Special Attention to Contribution of Mercury Intrusion Porosimetry and Environmental Scanning Electron Microscopy

High Resolution Gas Adsorption Study on Montmorillonite Clays from Côte d’Ivoire: Assessment of Surface Energetic Properties

Cracking and water seepage of Xiashu loess used as landfill cover under wetting–drying cycles

Contact Info

Product

Resources

About

Influence of interlayer cations on the water sorption and swelling–shrinkage of MX80 bentonite

Cited by 92 publications

References 6 publications

Microstructure Investigation in Unsaturated Soils: A Review with Special Attention to Contribution of Mercury Intrusion Porosimetry and Environmental Scanning Electron Microscopy

Microstructure Investigation in Unsaturated Soils: A Review with Special Attention to Contribution of Mercury Intrusion Porosimetry and Environmental Scanning Electron Microscopy

High Resolution Gas Adsorption Study on Montmorillonite Clays from C&#244;te d’Ivoire: Assessment of Surface Energetic Properties

Cracking and water seepage of Xiashu loess used as landfill cover under wetting–drying cycles

Contact Info

Product

Resources

About

High Resolution Gas Adsorption Study on Montmorillonite Clays from Côte d’Ivoire: Assessment of Surface Energetic Properties