Study on the Mechanism of Stabilizing Loess with Lime: Analysis of Mineral and Microstructure Evolution
X-ray diffraction (XRD) technique was adopted to test the mineral composition of quicklime-solidified loess with different lime-adding rates at different curing periods. Scanning electron microscopy (SEM) and nitrogen adsorption were used to analyze the microporous structure of the solidified loess....
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/6641496 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850167474683641856 |
|---|---|
| author | Yawei Ma Wenwu Chen |
| author_facet | Yawei Ma Wenwu Chen |
| author_sort | Yawei Ma |
| collection | DOAJ |
| description | X-ray diffraction (XRD) technique was adopted to test the mineral composition of quicklime-solidified loess with different lime-adding rates at different curing periods. Scanning electron microscopy (SEM) and nitrogen adsorption were used to analyze the microporous structure of the solidified loess. The unconfined compressive strength and limit moisture content of solidified loess were combined to analyze the evolution mechanism of mineral composition and microstructure of solidified loess with the change of curing period and clarify the mechanism of quicklime-solidified loess. The results showed reduced content of clay minerals and decrease in the number of large pores due to increase of hydrates and pozzolanic products during extended curing period. The solidified soil fabric transformed from a compact structure into a mesh structure composing of acicular crystal and cementation. The main reasons for strength increase and change of liquid and plastic limits with the lime-solidified loess after extended curing are the change of the substance and the microstructure. |
| format | Article |
| id | doaj-art-d7fce3d2502a47c78d2b7b861524a632 |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-d7fce3d2502a47c78d2b7b861524a6322025-08-20T02:21:11ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/66414966641496Study on the Mechanism of Stabilizing Loess with Lime: Analysis of Mineral and Microstructure EvolutionYawei Ma0Wenwu Chen1Key Laboratory of Mechanics of Disaster and Environment in Western China, Ministry of Education, Department of Geological Engineering, Lanzhou University, Lanzhou, ChinaKey Laboratory of Mechanics of Disaster and Environment in Western China, Ministry of Education, Department of Geological Engineering, Lanzhou University, Lanzhou, ChinaX-ray diffraction (XRD) technique was adopted to test the mineral composition of quicklime-solidified loess with different lime-adding rates at different curing periods. Scanning electron microscopy (SEM) and nitrogen adsorption were used to analyze the microporous structure of the solidified loess. The unconfined compressive strength and limit moisture content of solidified loess were combined to analyze the evolution mechanism of mineral composition and microstructure of solidified loess with the change of curing period and clarify the mechanism of quicklime-solidified loess. The results showed reduced content of clay minerals and decrease in the number of large pores due to increase of hydrates and pozzolanic products during extended curing period. The solidified soil fabric transformed from a compact structure into a mesh structure composing of acicular crystal and cementation. The main reasons for strength increase and change of liquid and plastic limits with the lime-solidified loess after extended curing are the change of the substance and the microstructure.http://dx.doi.org/10.1155/2021/6641496 |
| spellingShingle | Yawei Ma Wenwu Chen Study on the Mechanism of Stabilizing Loess with Lime: Analysis of Mineral and Microstructure Evolution Advances in Civil Engineering |
| title | Study on the Mechanism of Stabilizing Loess with Lime: Analysis of Mineral and Microstructure Evolution |
| title_full | Study on the Mechanism of Stabilizing Loess with Lime: Analysis of Mineral and Microstructure Evolution |
| title_fullStr | Study on the Mechanism of Stabilizing Loess with Lime: Analysis of Mineral and Microstructure Evolution |
| title_full_unstemmed | Study on the Mechanism of Stabilizing Loess with Lime: Analysis of Mineral and Microstructure Evolution |
| title_short | Study on the Mechanism of Stabilizing Loess with Lime: Analysis of Mineral and Microstructure Evolution |
| title_sort | study on the mechanism of stabilizing loess with lime analysis of mineral and microstructure evolution |
| url | http://dx.doi.org/10.1155/2021/6641496 |
| work_keys_str_mv | AT yaweima studyonthemechanismofstabilizingloesswithlimeanalysisofmineralandmicrostructureevolution AT wenwuchen studyonthemechanismofstabilizingloesswithlimeanalysisofmineralandmicrostructureevolution |