Experimental Study on the Wind Erosion Resistance of Aeolian Sand Solidified by Microbially Induced Calcite Precipitation (MICP)
Microbially induced calcite precipitation (MICP) is an emerging solidification method characterized by high economic efficiency, environmental friendliness, and durability. This study validated the reliability of the MICP sand solidification method by conducting a small-scale wind tunnel model test...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-03-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/17/6/1270 |
| _version_ | 1797240205383565312 |
|---|---|
| author | Jing Qu Gang Li Bin Ma Jia Liu Jinli Zhang Xing Liu Yijia Zhang |
| author_facet | Jing Qu Gang Li Bin Ma Jia Liu Jinli Zhang Xing Liu Yijia Zhang |
| author_sort | Jing Qu |
| collection | DOAJ |
| description | Microbially induced calcite precipitation (MICP) is an emerging solidification method characterized by high economic efficiency, environmental friendliness, and durability. This study validated the reliability of the MICP sand solidification method by conducting a small-scale wind tunnel model test using aeolian sand solidified by MICP and analyzing the effects of wind velocity (7 m/s, 10 m/s, and 13 m/s), deflation angle (0°, 15°, 30°, and 45°), wind erosion cycle (1, 3, and 5), and other related factors on the mass loss rate of solidified aeolian sand. The microstructure of aeolian sand was constructed by performing mesoscopic and microscopic testing based on X-ray diffraction analysis (XRD), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). According to the test results, the mass loss rate of solidified aeolian sand gradually increases with the increase in wind velocity, deflation angle, and wind erosion cycle. When the wind velocity was 13 m/s, the mass loss rate of the aeolian sand was only 63.6%, indicating that aeolian sand has excellent wind erosion resistance. CaCO<sub>3</sub> crystals generated by MICP were mostly distributed on sand particle surfaces, in sand particle pores, and between sand particles to realize the covering, filling, and cementing effects. |
| first_indexed | 2024-04-24T18:03:44Z |
| format | Article |
| id | doaj.art-36024386f26e4bfeb9a24c5281d53641 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-24T18:03:44Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-36024386f26e4bfeb9a24c5281d536412024-03-27T13:52:23ZengMDPI AGMaterials1996-19442024-03-01176127010.3390/ma17061270Experimental Study on the Wind Erosion Resistance of Aeolian Sand Solidified by Microbially Induced Calcite Precipitation (MICP)Jing Qu0Gang Li1Bin Ma2Jia Liu3Jinli Zhang4Xing Liu5Yijia Zhang6Shaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi’an 710123, ChinaShaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi’an 710123, ChinaShaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi’an 710123, ChinaShaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi’an 710123, ChinaState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, ChinaShaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi’an 710123, ChinaShaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi’an 710123, ChinaMicrobially induced calcite precipitation (MICP) is an emerging solidification method characterized by high economic efficiency, environmental friendliness, and durability. This study validated the reliability of the MICP sand solidification method by conducting a small-scale wind tunnel model test using aeolian sand solidified by MICP and analyzing the effects of wind velocity (7 m/s, 10 m/s, and 13 m/s), deflation angle (0°, 15°, 30°, and 45°), wind erosion cycle (1, 3, and 5), and other related factors on the mass loss rate of solidified aeolian sand. The microstructure of aeolian sand was constructed by performing mesoscopic and microscopic testing based on X-ray diffraction analysis (XRD), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). According to the test results, the mass loss rate of solidified aeolian sand gradually increases with the increase in wind velocity, deflation angle, and wind erosion cycle. When the wind velocity was 13 m/s, the mass loss rate of the aeolian sand was only 63.6%, indicating that aeolian sand has excellent wind erosion resistance. CaCO<sub>3</sub> crystals generated by MICP were mostly distributed on sand particle surfaces, in sand particle pores, and between sand particles to realize the covering, filling, and cementing effects.https://www.mdpi.com/1996-1944/17/6/1270MICPaeolian sandwind erosion resistancemodel testsolidified mechanism |
| spellingShingle | Jing Qu Gang Li Bin Ma Jia Liu Jinli Zhang Xing Liu Yijia Zhang Experimental Study on the Wind Erosion Resistance of Aeolian Sand Solidified by Microbially Induced Calcite Precipitation (MICP) Materials MICP aeolian sand wind erosion resistance model test solidified mechanism |
| title | Experimental Study on the Wind Erosion Resistance of Aeolian Sand Solidified by Microbially Induced Calcite Precipitation (MICP) |
| title_full | Experimental Study on the Wind Erosion Resistance of Aeolian Sand Solidified by Microbially Induced Calcite Precipitation (MICP) |
| title_fullStr | Experimental Study on the Wind Erosion Resistance of Aeolian Sand Solidified by Microbially Induced Calcite Precipitation (MICP) |
| title_full_unstemmed | Experimental Study on the Wind Erosion Resistance of Aeolian Sand Solidified by Microbially Induced Calcite Precipitation (MICP) |
| title_short | Experimental Study on the Wind Erosion Resistance of Aeolian Sand Solidified by Microbially Induced Calcite Precipitation (MICP) |
| title_sort | experimental study on the wind erosion resistance of aeolian sand solidified by microbially induced calcite precipitation micp |
| topic | MICP aeolian sand wind erosion resistance model test solidified mechanism |
| url | https://www.mdpi.com/1996-1944/17/6/1270 |
| work_keys_str_mv | AT jingqu experimentalstudyonthewinderosionresistanceofaeoliansandsolidifiedbymicrobiallyinducedcalciteprecipitationmicp AT gangli experimentalstudyonthewinderosionresistanceofaeoliansandsolidifiedbymicrobiallyinducedcalciteprecipitationmicp AT binma experimentalstudyonthewinderosionresistanceofaeoliansandsolidifiedbymicrobiallyinducedcalciteprecipitationmicp AT jialiu experimentalstudyonthewinderosionresistanceofaeoliansandsolidifiedbymicrobiallyinducedcalciteprecipitationmicp AT jinlizhang experimentalstudyonthewinderosionresistanceofaeoliansandsolidifiedbymicrobiallyinducedcalciteprecipitationmicp AT xingliu experimentalstudyonthewinderosionresistanceofaeoliansandsolidifiedbymicrobiallyinducedcalciteprecipitationmicp AT yijiazhang experimentalstudyonthewinderosionresistanceofaeoliansandsolidifiedbymicrobiallyinducedcalciteprecipitationmicp |