Strength characteristics and strength prediction of fluid geopolymer solidified soil

YI Fu; JIANG Shan; MU Dehui; GUAN Maocheng

doi:10.16030/j.cnki.issn.1000-3665.202205038

2023 Vol. 50, No. 1

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YI Fu, JIANG Shan, MU Dehui, GUAN Maocheng. Strength characteristics and strength prediction of fluid geopolymer solidified soil[J]. Hydrogeology & Engineering Geology, 2023, 50(1): 60-68. doi: 10.16030/j.cnki.issn.1000-3665.202205038

Citation:

YI Fu, JIANG Shan, MU Dehui, GUAN Maocheng. Strength characteristics and strength prediction of fluid geopolymer solidified soil[J]. Hydrogeology & Engineering Geology, 2023, 50(1): 60-68. doi: 10.16030/j.cnki.issn.1000-3665.202205038

Strength characteristics and strength prediction of fluid geopolymer solidified soil

1.
College of Architecture and Transportation, Liaoning Technical University, Fuxin, Liaoning　123000, China
2.
College of Civil Engineering, Liaoning Technical University, Fuxin, Liaoning　123000, China
3.
Changchun High Tech Construction and Development Co. Ltd., Changchun, Jilin　130015, China

More Information

Corresponding author: JIANG Shan, 13188009871@163.com

Received Date: 14 May 2022

Revised Date: 15 August 2022

Accepted Date: 26 September 2022

Publish Date: 15 January 2023

Abstract

Abstract

Geopolymer cementitious materials can replace cement-based cementitious materials as curing agents in engineering problems, such as backfilling of narrow fertilizer troughs, and effectively reduce pollution and energy consumption in the cement production process. There are few studies on cementitious materials. Three new green cementitious materials combined with alkali activators are used to solidify engineering slag and form fluidized geopolymer-solidified soil. The strength prediction model is established to analyze the influence of different factors on the strength. The results show that the strength of the solidified soil increases first and then decreases with the increasing modulus of the alkali activator, increases with the content of GGBS, fly ash and rice husk ash, and decreases with the increasing particle size. When the modulus of alkali activator increases to 1.2, the content of GGBS increases to 10%, the content of fly ash increases to 8%, and the content of rice husk ash increases to 11%, the strength of the solidified soil increases significantly. The average relative error of the prediction results of the strength prediction model is only 5.57%, which is relatively accurate for the solidified soil. The calculation results of the weights of each layer in the prediction model show that the curing age has the greatest impact on the strength of the solidified soil, and the particle size of rice husk ash has the minimal impact. The research results can provide theoretical support for the application of solidified soil in practical engineering.
- fluid solidified soil /
- geopolymer /
- unconfined compressive strength /
- strength prediction model /
- weight analysis

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References

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