Top Buy Now Summary References
Home
>
Section
>
Chapter

Experimental investigation of bentonite impact on self-healing of clay soils

Roushangar, K.; Aalami, M.T.; Houshyar, Y.

Arabian Journal of Geosciences 13(21): 1122

2020

ISSN/ISBN: 1866-7538
DOI: 10.1007/s12517-020-06131-x
Accession: 098607097

Article/Abstract emailed within 0-6 h
Payments are secure & encrypted
Powered by Stripe
Powered by PayPal

Summary
Compacted clay layers are known as earth dams' most common impermeable layer. However, owing to the specific nature of clay and Atterberg limits, an increase in age damage, these layers by cracking them. Despite this, the crack-healing property of clay is the main factor in closing external cracks. In this regard, in this study, a new method is used to evaluate clays' self-healing characteristic by pinhole tests with the variation of the Plasticity Index (PI). For this purpose, three soil samples from the Vanyar Dam located in Iran were treated to obtain the PI between 7 and 26 by adding different percentages of bentonite (i.e., 5%, 10%, 15%, and 20%) and the impact of bentonite percentage increase was investigated on self-healing property and outflow rate of clay soil. Subsequent to geotechnical tests, the obtained results showed that adding bentonite to the soil samples with optimum water content and 2% below it, decreases soil dispersion and makes it non-dispersive. In addition, the self-healing phenomenon was visible and predictable with the increase of bentonite in natural soil; as for the sample with 20% bentonite, this phenomenon was observed from an early age due to high PI and the potential for high inflation. Also, the sample with 20% bentonite and a moisture content of 2% less than the optimum showed the most reduction in the outflow (38%) when compared with the natural soil sample. Therefore, it can be concluded that the PI variation (between 7 and 26) can cause non-dispersivity of clay and increase the self-healing ability.

References

Yu, B.; El-Zein, A. 2019: Experimental investigation of the effect of airgaps in preventing desiccation of bentonite in geosynthetic clay liners exposed to high temperatures Geotextiles and Geomembranes 47(2): 142-153
Bergado, D.T.; Kang, K.Y. 1988: Improvement of dispersive soils by mixing with Bangkok clay or bentonite - Amélioration des sols disséminés par mélange avec de l'argile de Bangkok ou de la bentonite Symposium on Environmental Geotechnics and Problematic Soils and Rocks : 471-494
Ahmadi, A.; Foroutan, R.; Esmaeili, H.; Tamjidi, S. 2020: The role of bentonite clay and bentonite clay@MnFe2O4 composite and their physico-chemical properties on the removal of Cr(III) and Cr(VI) from aqueous media Environmental Science and Pollution Research International 27(12): 14044-14057
Elsergany, M.; Shanableh, A.; Ahsan, A. 2016: Exploratory Study to Assess the Impact of Chitosan/Bentonite Ratio on the Metal Removal Capacity of Chitosan Modified Bentonite Clay Global Nest Journal 18(2): 437-443
Shen, Z; Cao, Y; Fang, L 2017: Experimental Investigation of Rapid Stabilization of Soft Clay Soils Using Chemical Admixtures Soil Mechanics and Foundation Engineering 54(3): 202-210
Khan, M.M.; Bhatti, Q.A.; Akhlaq, M.; Ishaq, M.; Ali, D.; Jalil, A.; Asghar, J.; Alarifi, S.; Elaissari, A. 2022: Assessment of Antimicrobial Potential of Plagiochasma rupestre Coupled with Healing Clay Bentonite and AGNPS Biomed Research International 2022: 4264466
Bergado, D.; Kang, K. 1988: Improvement of dispersive soils by mixing with Bangkok clay or bentonite Environmental geotechnics and problematic soils and rocks: proceedings of the international symposium held at Asian Institute of Technology Bangkok edited by AS Balasubramaniam et al: 494
Bilondi, M.P.; Toufigh, M.M.; Toufigh, V. 2018: Experimental investigation of using a recycled glass powder-based geopolymer to improve the mechanical behavior of clay soils Construction and Building Materials 170: 302-313
Zhang, K.; Charkley, F.N. 2017: Experimental investigation on compaction and Atterberg limits characteristics of soils: Aspects of clay content using artificial mixtures KSCE Journal of Civil Engineering 21(2): 546-553
Randolph, M.F.; Lee, K.K.; Cassidy, M.J. 2013: Bearing capacity on sand overlying clay soils: experimental and finite-element investigation of potential punch-through failure Géotechnique 63(15): 1271-1284
von Maubeuge, K.P. 2022: Investigation of bentonite requirements for geosynthetic clay barriers Clay Geosynthetic Barriers: 155-163
Tumsek, F. 2019: Investigation of Deep Red Adsorption Using Bentonite Clay Modified With A SURFACTANT Fresenius Environmental Bulletin 28(11): 7816-7822
Dixit, A.; Singh, D.; Shukla, S.K. 2024: Effect of expansive soils on swelling behavior of encapsulated sodium bentonite of geosynthetic clay liner (GCL) Procedia Structural Integrity 64(C): 1-5
Benjeddou, O. 2025: Experimental investigation of the impact of wood sawdust incorporation on the physical and thermal properties of fired clay bricks Scientific Reports 15(1): 30855
Lee, J.M.; Shackelford, C.D. 2005: Impact of Bentonite Quality on Hydraulic Conductivity of Geosynthetic Clay Liners Journal of Geotechnical and Geoenvironmental Engineering 131(1): 64-77
Yang, M.; Li, H.; Yang, C.; Li, H.; Pang, Y.; Chen, Y. 2025: Experimental study of bentonite clay loaded with Ni, Fe for catalytic reforming of biomass tar Bioresource Technology Reports 29: 102076
Neretnieks, I. 1985: Diffusivities of Some Constituents in Compacted Wet Bentonite Clay and the Impact on Radionuclide Migration in the Buffer Nuclear Technology 71(2): 458-470
Lin, H.; Shi, H.; Zhou, C.; Lyu, Z. 2024: Experimental Study on Hydraulic Conductivity of Clay-Bentonite Mixed Soil Liner Cailiao Daobao/Materials Reports 38(23): 23090001
Zhang, Z.; Ye, W.; Wang, Q.; Chen, Y. 2022: Investigation on healing behavior of unsaturated GMZ bentonite pellet mixture based on compressibility Acta Geotechnica 17(10): 4461-4471
Aliev, N.D.; Grigor Yan, N.A. 1968: Effect of bentonite gilabi bentonite clay on the growth of the pathogens of intestinal infections Trudy Azerbaidzhanskogo Nauchno-Issledovatel'skogo Instituta Virusologii Mikrobiologii i Gigieny 27: 234-241