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Plasticity Characteristics of Geopolymer Stabilized Expansive Soil
https://orcid.org/https://orcid.org/0000-0001-9890-9674
https://orcid.org/https://orcid.org/0000-0002-5818-3415
Marginal and weak soils are conventionally stabilized by cement and lime in civil engineering applications. However, the production process of these traditional stabilizers is energy intensive and it also serves as a major source of greenhouse gas emission leading to serious problems like global warming. But due to scarcity or non-availability of suitable soils at construction sites, use of cement is unavoidable. Geopolymer is a new generation alternative binding material for conventional cement. This is primarily produced from industrial wastes and rich in aluminosilicates when activated with alkalis. It has high strength, low cost, low energy consumption and it emits fewer greenhouse gases during synthesis. This study explores the efficiencies of ground granulated blast furnace slag (GGBS)-based geopolymer binder in stabilizing the expansive soil. The expansive soil is mixed with 0 to 20% of GGBS at 5% intervals and is activated with sodium hydroxide solutions of 0.5, 1, 2, 4, 6 and 8 M. The consistency limits, swelling and shrinkage characteristics of geopolymer treated soils are evaluated at curing periods of 0, 3, 7, 30 and 90 days. It is found that the plasticity characteristics and expansive properties of stabilized soil are strongly influenced by the geopolymer contents and the curing periods.
Plasticity Characteristics of Geopolymer Stabilized Expansive Soil
https://orcid.org/https://orcid.org/0000-0001-9890-9674
https://orcid.org/https://orcid.org/0000-0002-5818-3415
Marginal and weak soils are conventionally stabilized by cement and lime in civil engineering applications. However, the production process of these traditional stabilizers is energy intensive and it also serves as a major source of greenhouse gas emission leading to serious problems like global warming. But due to scarcity or non-availability of suitable soils at construction sites, use of cement is unavoidable. Geopolymer is a new generation alternative binding material for conventional cement. This is primarily produced from industrial wastes and rich in aluminosilicates when activated with alkalis. It has high strength, low cost, low energy consumption and it emits fewer greenhouse gases during synthesis. This study explores the efficiencies of ground granulated blast furnace slag (GGBS)-based geopolymer binder in stabilizing the expansive soil. The expansive soil is mixed with 0 to 20% of GGBS at 5% intervals and is activated with sodium hydroxide solutions of 0.5, 1, 2, 4, 6 and 8 M. The consistency limits, swelling and shrinkage characteristics of geopolymer treated soils are evaluated at curing periods of 0, 3, 7, 30 and 90 days. It is found that the plasticity characteristics and expansive properties of stabilized soil are strongly influenced by the geopolymer contents and the curing periods.
Plasticity Characteristics of Geopolymer Stabilized Expansive Soil
https://orcid.org/https://orcid.org/0000-0001-9890-9674
https://orcid.org/https://orcid.org/0000-0002-5818-3415
Marginal and weak soils are conventionally stabilized by cement and lime in civil engineering applications. However, the production process of these traditional stabilizers is energy intensive and it also serves as a major source of greenhouse gas emission leading to serious problems like global warming. But due to scarcity or non-availability of suitable soils at construction sites, use of cement is unavoidable. Geopolymer is a new generation alternative binding material for conventional cement. This is primarily produced from industrial wastes and rich in aluminosilicates when activated with alkalis. It has high strength, low cost, low energy consumption and it emits fewer greenhouse gases during synthesis. This study explores the efficiencies of ground granulated blast furnace slag (GGBS)-based geopolymer binder in stabilizing the expansive soil. The expansive soil is mixed with 0 to 20% of GGBS at 5% intervals and is activated with sodium hydroxide solutions of 0.5, 1, 2, 4, 6 and 8 M. The consistency limits, swelling and shrinkage characteristics of geopolymer treated soils are evaluated at curing periods of 0, 3, 7, 30 and 90 days. It is found that the plasticity characteristics and expansive properties of stabilized soil are strongly influenced by the geopolymer contents and the curing periods.
Plasticity Characteristics of Geopolymer Stabilized Expansive Soil
Lecture Notes in Civil Engineering
Dey, Ashim Kanti (editor) / Mandal, Jagat Jyoti (editor) / Manna, Bappaditya (editor) / Mishra, Manaswini (author) / Sahoo, Soumyaprakash (author) / Singh, Suresh Prasad (author)
Indian Young Geotechnical Engineers Conference ; 2019 ; Silchar, India
Proceedings of the 7th Indian Young Geotechnical Engineers Conference ; Chapter: 25 ; 225-234
2022-03-17
10 pages
Article/Chapter (Book)
Electronic Resource
English
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