PMID- 37167349
OWN - NLM
STAT- MEDLINE
DCOM- 20230515
LR  - 20230605
IS  - 1932-6203 (Electronic)
IS  - 1932-6203 (Linking)
VI  - 18
IP  - 5
DP  - 2023
TI  - Experimental study of synergistic reinforcement of silty clay with glutinous rice 
      paste and MICP.
PG  - e0284633
LID - 10.1371/journal.pone.0284633 [doi]
LID - e0284633
AB  - The use of microbially induced calcium carbonate precipitation (MICP) technology 
      can improve the mechanical properties of silty clay, and glutinous rice paste can 
      enhance microbial activity, improve the conversion rate of CaCO3 precipitation, 
      and help increase soil strength. An MICP solidification test of silty clay was 
      carried out by adding different concentrations of aged glutinous rice slurry and 
      cementing liquid, and unconfined compressive strength tests and scanning electron 
      microscope analysis of the solidified samples were carried out. The strength 
      growth mechanism of the glutinous rice paste was investigated, and the results 
      revealed that glutinous rice slurry can improve the enzymatic activity of 
      microorganisms, that is, the microorganisms can produce more urease to decompose 
      urea, and as the amount of urease increases, the concentration of the cementing 
      solution increases, and the calcium carbonate generated by the MICP precipitates. 
      When the concentration of the added cooked glutinous rice slurry was 5%, the 
      unconfined compressive strength of the soil was the largest. In addition, the 
      scanning electron microscope analysis revealed that cooled glutinous rice slurry 
      can be used as a bridge to generate a large amount of ineffective carbonic acid. 
      Calcium atoms are connected together to form effective calcium carbonate, which 
      fills in the pores of the soil as a whole, increasing the compactness of the soil 
      and greatly improving its macroscopic mechanical strength.
CI  - Copyright: (c) 2023 Hu, Chen. This is an open access article distributed under the 
      terms of the Creative Commons Attribution License, which permits unrestricted 
      use, distribution, and reproduction in any medium, provided the original author 
      and source are credited.
FAU - Hu, Qizhi
AU  - Hu Q
AUID- ORCID: 0000-0002-6209-4087
AD  - Hubei University of Technology, Wuhan, China.
FAU - Chen, Qian
AU  - Chen Q
AD  - Hubei University of Technology, Wuhan, China.
LA  - eng
PT  - Journal Article
DEP - 20230511
PL  - United States
TA  - PLoS One
JT  - PloS one
JID - 101285081
RN  - H0G9379FGK (Calcium Carbonate)
RN  - T1FAD4SS2M (Clay)
RN  - EC 3.5.1.5 (Urease)
RN  - 0 (Soil)
SB  - IM
MH  - *Calcium Carbonate
MH  - Clay
MH  - *Oryza
MH  - Urease
MH  - Soil
PMC - PMC10174498
COIS- The authors have declared that no competing interests exist.
EDAT- 2023/05/11 19:14
MHDA- 2023/05/15 06:42
PMCR- 2023/05/11
CRDT- 2023/05/11 13:54
PHST- 2022/11/14 00:00 [received]
PHST- 2023/04/04 00:00 [accepted]
PHST- 2023/05/15 06:42 [medline]
PHST- 2023/05/11 19:14 [pubmed]
PHST- 2023/05/11 13:54 [entrez]
PHST- 2023/05/11 00:00 [pmc-release]
AID - PONE-D-22-31388 [pii]
AID - 10.1371/journal.pone.0284633 [doi]
PST - epublish
SO  - PLoS One. 2023 May 11;18(5):e0284633. doi: 10.1371/journal.pone.0284633. 
      eCollection 2023.