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Dynamic Soil Properties of Enzymatic Cement-Stabilised Clay
https://orcid.org/http://orcid.org/0000-0002-4039-2606
https://orcid.org/http://orcid.org/0000-0003-2257-5801
The usage of nontraditional additives in the field of ground improvement of cohesive soils became imperative because some of them can lessen the deleterious effect on the environment. Enzymes extracted from natural sources are useful in modifying the soil-strength and stiffness. Degradation of shear modulus and accumulation of pore water pressure under dynamic soil conditions need to be considered before constructing any structures with weak sub-strata, exceptionally soft clay. The present study aims at improving the dynamic soil properties of soft clay by stabilising with a bio-enzyme. A series of cyclic triaxial tests were conducted to analyse the effect on various features like shear modulus, damping ratio, pore pressure ratio, etc., with the various cyclic shear strains (%). The degradation of shear modulus and accumulation of pore water pressure decrease with an increase in shear strain amplitude in untreated clay soil samples. A similar but improved trend was observed in the treated soils with the optimum bio-enzyme dosage and 1% cement. From the results, it can be concluded that the enzymatic cement-stabilised clay responds to the earthquake and other similar dynamic soil conditions than the natural soft clay. This technique can be used in the field of geotechnical earthquake engineering, which can reduce the ground amplification in soil-strata encountered with soft clay.
Dynamic Soil Properties of Enzymatic Cement-Stabilised Clay
https://orcid.org/http://orcid.org/0000-0002-4039-2606
https://orcid.org/http://orcid.org/0000-0003-2257-5801
The usage of nontraditional additives in the field of ground improvement of cohesive soils became imperative because some of them can lessen the deleterious effect on the environment. Enzymes extracted from natural sources are useful in modifying the soil-strength and stiffness. Degradation of shear modulus and accumulation of pore water pressure under dynamic soil conditions need to be considered before constructing any structures with weak sub-strata, exceptionally soft clay. The present study aims at improving the dynamic soil properties of soft clay by stabilising with a bio-enzyme. A series of cyclic triaxial tests were conducted to analyse the effect on various features like shear modulus, damping ratio, pore pressure ratio, etc., with the various cyclic shear strains (%). The degradation of shear modulus and accumulation of pore water pressure decrease with an increase in shear strain amplitude in untreated clay soil samples. A similar but improved trend was observed in the treated soils with the optimum bio-enzyme dosage and 1% cement. From the results, it can be concluded that the enzymatic cement-stabilised clay responds to the earthquake and other similar dynamic soil conditions than the natural soft clay. This technique can be used in the field of geotechnical earthquake engineering, which can reduce the ground amplification in soil-strata encountered with soft clay.
Dynamic Soil Properties of Enzymatic Cement-Stabilised Clay
https://orcid.org/http://orcid.org/0000-0002-4039-2606
https://orcid.org/http://orcid.org/0000-0003-2257-5801
The usage of nontraditional additives in the field of ground improvement of cohesive soils became imperative because some of them can lessen the deleterious effect on the environment. Enzymes extracted from natural sources are useful in modifying the soil-strength and stiffness. Degradation of shear modulus and accumulation of pore water pressure under dynamic soil conditions need to be considered before constructing any structures with weak sub-strata, exceptionally soft clay. The present study aims at improving the dynamic soil properties of soft clay by stabilising with a bio-enzyme. A series of cyclic triaxial tests were conducted to analyse the effect on various features like shear modulus, damping ratio, pore pressure ratio, etc., with the various cyclic shear strains (%). The degradation of shear modulus and accumulation of pore water pressure decrease with an increase in shear strain amplitude in untreated clay soil samples. A similar but improved trend was observed in the treated soils with the optimum bio-enzyme dosage and 1% cement. From the results, it can be concluded that the enzymatic cement-stabilised clay responds to the earthquake and other similar dynamic soil conditions than the natural soft clay. This technique can be used in the field of geotechnical earthquake engineering, which can reduce the ground amplification in soil-strata encountered with soft clay.
Dynamic Soil Properties of Enzymatic Cement-Stabilised Clay
Lecture Notes in Civil Engineering
Sitharam, T. G. (editor) / Dinesh, S. V. (editor) / Jakka, Ravi (editor) / Thomas, Geethu (author) / Rangaswamy, Kodi (author)
2021-04-01
10 pages
Article/Chapter (Book)
Electronic Resource
English
Dynamic Soil Properties of Enzymatic Cement-Stabilised Clay
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