Mechanical properties and mechanism analyses of rice husk ash geopolymer solidified soil
In order to study the application of the green environmental protection fluid solidified soil in engineering problems such as backfilling of a narrow fertilizer tank, the rice husk ash and geopolymer solidified engineering residue forming the fluid rice husk ash geopolymer solidified soil is propose...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Hydrogeology & Engineering Geology
2022-03-01
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| Series: | Shuiwen dizhi gongcheng dizhi |
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| Online Access: | https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202107021 |
| _version_ | 1811170270095867904 |
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| author | Fu YI Maocheng GUAN Jun LI Changbo DU |
| author_facet | Fu YI Maocheng GUAN Jun LI Changbo DU |
| author_sort | Fu YI |
| collection | DOAJ |
| description | In order to study the application of the green environmental protection fluid solidified soil in engineering problems such as backfilling of a narrow fertilizer tank, the rice husk ash and geopolymer solidified engineering residue forming the fluid rice husk ash geopolymer solidified soil is proposed. The effects of the content and particle size of the rice husk ash on the unconfined compressive strength (UCS) of the rice husk ash geopolymer stabilized soil are examined by using the test methods of the unconfined compressive strength (UCS), X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray energy spectrum analysis (EDS), and the effects of the content and particle size of the rice husk ash on the microstructure of the soil are discussed. The results show that the net pulp fluidity of the rice husk ash geopolymer solidified soil is negatively correlated with the content and particle size of the rice husk ash, and the setting time is positively correlated with the content of the rice husk ash, but is negatively correlated with the particle size of the rice husk ash. The UCS value of the rice husk ash geopolymer stabilized soil increases significantly with the increase of the content of the rice husk ash and with the decrease of the particle size. When the content of the rice husk ash increases to 10%, the strength improvement efficiency decreases, and the optimal content of the rice husk ash is 10%. During the curing process, two kinds of gels, namely hydrated sodium aluminosilicate (N-A-S-H) and hydrated calcium silicate (C-S-H), play the role of filling the internal pores and cemented soil particles, so that the whole structure tends to be complete, which is the fundamental reason for the strength improvement of the rice husk ash geopolymer stabilized soil. The research results can provide a theoretical basis for the engineering application of the rice husk ash in fluid solidified soils. |
| first_indexed | 2024-04-10T16:55:17Z |
| format | Article |
| id | doaj.art-6f5401204b0c4f9a862a3920f8ede68a |
| institution | Directory Open Access Journal |
| issn | 1000-3665 |
| language | zho |
| last_indexed | 2024-04-10T16:55:17Z |
| publishDate | 2022-03-01 |
| publisher | Editorial Office of Hydrogeology & Engineering Geology |
| record_format | Article |
| series | Shuiwen dizhi gongcheng dizhi |
| spelling | doaj.art-6f5401204b0c4f9a862a3920f8ede68a2023-02-07T08:18:09ZzhoEditorial Office of Hydrogeology & Engineering GeologyShuiwen dizhi gongcheng dizhi1000-36652022-03-014929410110.16030/j.cnki.issn.1000-3665.202107021202107021Mechanical properties and mechanism analyses of rice husk ash geopolymer solidified soilFu YI0Maocheng GUAN1Jun LI2Changbo DU3College of Architecture and Transportation, Liaoning Technical University, Fuxin, Liaoning 123000, ChinaCollege of Civil Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, ChinaCollege of Civil Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, ChinaCollege of Civil Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, ChinaIn order to study the application of the green environmental protection fluid solidified soil in engineering problems such as backfilling of a narrow fertilizer tank, the rice husk ash and geopolymer solidified engineering residue forming the fluid rice husk ash geopolymer solidified soil is proposed. The effects of the content and particle size of the rice husk ash on the unconfined compressive strength (UCS) of the rice husk ash geopolymer stabilized soil are examined by using the test methods of the unconfined compressive strength (UCS), X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray energy spectrum analysis (EDS), and the effects of the content and particle size of the rice husk ash on the microstructure of the soil are discussed. The results show that the net pulp fluidity of the rice husk ash geopolymer solidified soil is negatively correlated with the content and particle size of the rice husk ash, and the setting time is positively correlated with the content of the rice husk ash, but is negatively correlated with the particle size of the rice husk ash. The UCS value of the rice husk ash geopolymer stabilized soil increases significantly with the increase of the content of the rice husk ash and with the decrease of the particle size. When the content of the rice husk ash increases to 10%, the strength improvement efficiency decreases, and the optimal content of the rice husk ash is 10%. During the curing process, two kinds of gels, namely hydrated sodium aluminosilicate (N-A-S-H) and hydrated calcium silicate (C-S-H), play the role of filling the internal pores and cemented soil particles, so that the whole structure tends to be complete, which is the fundamental reason for the strength improvement of the rice husk ash geopolymer stabilized soil. The research results can provide a theoretical basis for the engineering application of the rice husk ash in fluid solidified soils.https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202107021fluid solidified soilgeopolymerrice husk ashunconfined compressive strengthmicro-mechanism |
| spellingShingle | Fu YI Maocheng GUAN Jun LI Changbo DU Mechanical properties and mechanism analyses of rice husk ash geopolymer solidified soil Shuiwen dizhi gongcheng dizhi fluid solidified soil geopolymer rice husk ash unconfined compressive strength micro-mechanism |
| title | Mechanical properties and mechanism analyses of rice husk ash geopolymer solidified soil |
| title_full | Mechanical properties and mechanism analyses of rice husk ash geopolymer solidified soil |
| title_fullStr | Mechanical properties and mechanism analyses of rice husk ash geopolymer solidified soil |
| title_full_unstemmed | Mechanical properties and mechanism analyses of rice husk ash geopolymer solidified soil |
| title_short | Mechanical properties and mechanism analyses of rice husk ash geopolymer solidified soil |
| title_sort | mechanical properties and mechanism analyses of rice husk ash geopolymer solidified soil |
| topic | fluid solidified soil geopolymer rice husk ash unconfined compressive strength micro-mechanism |
| url | https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202107021 |
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