Study on Cementation Effect of Tailing Sand by Magnesium Oxide Combined with Microorganism or by MICP

WANG Bukang; JIA Cangqin; WANG Guihe; ZHANG Haonan

doi:10.13204/j.gyjzG21022609

Volume 52 Issue 11

Nov. 2022

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WANG Bukang, JIA Cangqin, WANG Guihe, ZHANG Haonan. Study on Cementation Effect of Tailing Sand by Magnesium Oxide Combined with Microorganism or by MICP[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(11): 79-83. doi: 10.13204/j.gyjzG21022609

Citation:

WANG Bukang, JIA Cangqin, WANG Guihe, ZHANG Haonan. Study on Cementation Effect of Tailing Sand by Magnesium Oxide Combined with Microorganism or by MICP[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(11): 79-83. doi: 10.13204/j.gyjzG21022609

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Study on Cementation Effect of Tailing Sand by Magnesium Oxide Combined with Microorganism or by MICP

doi: 10.13204/j.gyjzG21022609

School of Engineering and Technology, Key Laboratory of Deep Geodrilling Technology, MNR, China University of Geosciences, Beijing 100083, China

Received Date: 2021-02-26

Abstract

Abstract

Magnesium oxide combined with microorganism was used to cement tailing sand, and a comparison between cementation effect of maguesium oxide combined with microorganism and microbial induced carbonate precipitation (MICP) was conducted. The effects of the initial moisture content (in the range of 16% to 25%) of tailing sand and the magnesium oxide content (in the range of 6% to 15%), and the initial moisture content (in the range of 16% to 25%) of tailing sand during MICP on cementation were explored by unconfined compressive strength and SEM tests. The results showed that in the process of cementation with magnesium oxide combined with microorganism, the higher the initial moisture content was, the lower the unconfined compressive strength was; and the more the magnesium oxide content was, the higher the strength was; and in MICP, with the increase of the initial moisture content, the strength of specimens first decreased and then increased, and the lowest initial moisture content was 19%.
- magnesium oxide,
- microorganism,
- tailing sand,
- moisture content,
- unconfined compressive strength

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References(19)

References

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