PMID- 37570041
OWN - NLM
STAT- Publisher
LR  - 20230814
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 16
IP  - 15
DP  - 2023 Jul 29
TI  - Experimental Study on the Effect of an Organic Matrix on Improving the Strength 
      of Tailings Strengthened by MICP.
LID - 10.3390/ma16155337 [doi]
LID - 5337
AB  - In order to improve the effect of microbial-induced calcium carbonate 
      precipitation (MICP) in tailings reinforcement, sodium citrate, an organic matrix 
      with good water solubility, was selected as the crystal form adjustment template 
      for inducing calcium carbonate crystallization, and the reinforcements of 
      tailings by MICP were conducted in several experiments. The effects of sodium 
      citrate on the yield, crystal form, crystal appearance, and distribution of 
      calcium carbonate were analyzed by MICP solution test; thus, the related results 
      were obtained. These showed that the addition of a proper amount of organic 
      matrix sodium citrate could result in an increment in the yield of calcium 
      carbonate. The growth rate of calcium carbonate reached 22.6% under the optimum 
      amount of sodium citrate, and the crystals of calcium carbonate were diverse and 
      closely arranged. Based on this, the MICP reinforcement test of tailings was 
      carried out under the action of the optimum amount of sodium citrate. The 
      microscopic analysis using CT and other means showed that the calcium carbonate 
      is distributed more uniformly in tailings, and the porosity of samples is 
      significantly reduced by layered scanning analysis. The results of triaxial shear 
      tests showed that adding organic matrix sodium citrate effectively increased the 
      cohesion, internal friction angle, and peak stress of the reinforced tailings. It 
      aims to provide a novel idea, a creative approach, and a method to enhance the 
      reinforcement effect of tailings and green solidification technology in the 
      mining environment.
FAU - Hu, Lin
AU  - Hu L
AD  - School of Resource & Environment and Safety Engineering, University of South 
      China, Hengyang 421001, China.
AD  - Hunan Province Engineering Technology Research Center for Disaster Prediction and 
      Control on Mining Geotechnical Engineering, Hengyang 421001, China.
FAU - Zheng, Huaimiao
AU  - Zheng H
AD  - School of Resource & Environment and Safety Engineering, University of South 
      China, Hengyang 421001, China.
FAU - Wu, Lingling
AU  - Wu L
AD  - School of Resource & Environment and Safety Engineering, University of South 
      China, Hengyang 421001, China.
AD  - Hunan Province Engineering Technology Research Center for Disaster Prediction and 
      Control on Mining Geotechnical Engineering, Hengyang 421001, China.
FAU - Zhang, Zhijun
AU  - Zhang Z
AD  - School of Resource & Environment and Safety Engineering, University of South 
      China, Hengyang 421001, China.
AD  - Hunan Province Engineering Technology Research Center for Disaster Prediction and 
      Control on Mining Geotechnical Engineering, Hengyang 421001, China.
FAU - Yu, Qing
AU  - Yu Q
AD  - School of Resource & Environment and Safety Engineering, University of South 
      China, Hengyang 421001, China.
AD  - Hunan Province Engineering Technology Research Center for Disaster Prediction and 
      Control on Mining Geotechnical Engineering, Hengyang 421001, China.
FAU - Tian, Yakun
AU  - Tian Y
AUID- ORCID: 0009-0000-5389-9484
AD  - School of Resource & Environment and Safety Engineering, University of South 
      China, Hengyang 421001, China.
AD  - Hunan Province Engineering Technology Research Center for Disaster Prediction and 
      Control on Mining Geotechnical Engineering, Hengyang 421001, China.
FAU - He, Guicheng
AU  - He G
AD  - School of Resource & Environment and Safety Engineering, University of South 
      China, Hengyang 421001, China.
AD  - Hunan Province Engineering Technology Research Center for Disaster Prediction and 
      Control on Mining Geotechnical Engineering, Hengyang 421001, China.
LA  - eng
GR  - 52274167/National Natural Science Foundation of China/
GR  - 52274127/National Natural Science Foundation of China/
GR  - 22B0410/the Research Foundation of Education Bureau of Hunan Province/
GR  - 22A0291/the Research Foundation of Education Bureau of Hunan Province/
GR  - 20B496/the Research Foundation of Education Bureau of Hunan Province/
GR  - 2021SK1050/he Hunan Province's technology research project "Revealing the List 
      and Taking Command"/
PT  - Journal Article
DEP - 20230729
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC10420210
OTO - NOTNLM
OT  - calcium carbonate
OT  - microbial biomineralization
OT  - organic matrix
OT  - tailings
COIS- The authors declare no conflict of interest.
EDAT- 2023/08/12 10:49
MHDA- 2023/08/12 10:49
PMCR- 2023/07/29
CRDT- 2023/08/12 01:13
PHST- 2023/04/06 00:00 [received]
PHST- 2023/07/08 00:00 [revised]
PHST- 2023/07/26 00:00 [accepted]
PHST- 2023/08/12 10:49 [medline]
PHST- 2023/08/12 10:49 [pubmed]
PHST- 2023/08/12 01:13 [entrez]
PHST- 2023/07/29 00:00 [pmc-release]
AID - ma16155337 [pii]
AID - materials-16-05337 [pii]
AID - 10.3390/ma16155337 [doi]
PST - epublish
SO  - Materials (Basel). 2023 Jul 29;16(15):5337. doi: 10.3390/ma16155337.