Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate Precipitation
Joint Authors
Wang, Zhaoyu
Zhang, Nan
Ding, Jinhua
Lu, Chen
Jin, Yong
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-08
Country of Publication
Egypt
No. of Pages
10
Abstract EN
Wind erosion phenomenon is commonly encountered in desert areas, which is harmful to engineering constructions and environment.
This study proposed an innovative microbial-induced calcium carbonate precipitation (MICP) technique to reinforce sands for mitigating natural hazards caused by the wind erosion.
A series of small-scale laboratory experiments were performed to evaluate wind erosion resistance of MICP-treated sands with different treatment cycles.
The spraying method was used to treat sand specimens, and unconfined compression (UCC) strength tests were also conducted to assess the performance of the MICP technique.
Experimental results revealed that the bulk density of treated sand was slightly increased with the number of MICP treatment cycles.
Additionally, the wind erosion rate of treated sands was significantly decreased, and the UCC strength was increased (maximum to 4 MPa) with the number of treatment cycles, which was mainly attributed to the bonding effect from the microbial-induced CaCO3 crystals among sand particles based on the scanning electron microscopy (SEM) analyses.
Such effect also facilitated to form a hard protection layer on top of the sand specimen in order to improve the wind erosion resistance of MICP-treated sands.
This technique provides an alternative method to mitigate and prevent the aggravation of desertification.
American Psychological Association (APA)
Wang, Zhaoyu& Zhang, Nan& Ding, Jinhua& Lu, Chen& Jin, Yong. 2018. Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate Precipitation. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1120402
Modern Language Association (MLA)
Wang, Zhaoyu…[et al.]. Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate Precipitation. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1120402
American Medical Association (AMA)
Wang, Zhaoyu& Zhang, Nan& Ding, Jinhua& Lu, Chen& Jin, Yong. Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate Precipitation. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1120402
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1120402