Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate Precipitation

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 er...

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Main Authors: Zhaoyu Wang, Nan Zhang, Jinhua Ding, Chen Lu, Yong Jin
Format: Article
Language:English
Published: Wiley 2018-01-01
Series:Advances in Materials Science and Engineering
Online Access:http://dx.doi.org/10.1155/2018/3463298
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author Zhaoyu Wang
Nan Zhang
Jinhua Ding
Chen Lu
Yong Jin
author_facet Zhaoyu Wang
Nan Zhang
Jinhua Ding
Chen Lu
Yong Jin
author_sort Zhaoyu Wang
collection DOAJ
description 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.
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publisher Wiley
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series Advances in Materials Science and Engineering
spelling doaj-art-d2ad7c0f5baf448aa6c7b9aeba1b576e2025-02-03T06:11:21ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/34632983463298Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate PrecipitationZhaoyu Wang0Nan Zhang1Jinhua Ding2Chen Lu3Yong Jin4College of Civil Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, ChinaDepartment of Civil Engineering, The University of Texas at Arlington, Arlington, TX 76019, USACollege of Civil Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, ChinaCollege of Civil Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, ChinaCollege of Civil Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, ChinaWind 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.http://dx.doi.org/10.1155/2018/3463298
spellingShingle Zhaoyu Wang
Nan Zhang
Jinhua Ding
Chen Lu
Yong Jin
Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate Precipitation
Advances in Materials Science and Engineering
title Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate Precipitation
title_full Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate Precipitation
title_fullStr Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate Precipitation
title_full_unstemmed Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate Precipitation
title_short Experimental Study on Wind Erosion Resistance and Strength of Sands Treated with Microbial-Induced Calcium Carbonate Precipitation
title_sort experimental study on wind erosion resistance and strength of sands treated with microbial induced calcium carbonate precipitation
url http://dx.doi.org/10.1155/2018/3463298
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AT nanzhang experimentalstudyonwinderosionresistanceandstrengthofsandstreatedwithmicrobialinducedcalciumcarbonateprecipitation
AT jinhuading experimentalstudyonwinderosionresistanceandstrengthofsandstreatedwithmicrobialinducedcalciumcarbonateprecipitation
AT chenlu experimentalstudyonwinderosionresistanceandstrengthofsandstreatedwithmicrobialinducedcalciumcarbonateprecipitation
AT yongjin experimentalstudyonwinderosionresistanceandstrengthofsandstreatedwithmicrobialinducedcalciumcarbonateprecipitation