PMID- 37188710
OWN - NLM
STAT- MEDLINE
DCOM- 20230517
LR  - 20230606
IS  - 2045-2322 (Electronic)
IS  - 2045-2322 (Linking)
VI  - 13
IP  - 1
DP  - 2023 May 15
TI  - Effect of Bacillus subtilis on mechanical and self-healing properties in mortar 
      with different crack widths and curing conditions.
PG  - 7844
LID - 10.1038/s41598-023-34837-x [doi]
LID - 7844
AB  - This research aimed to investigate the effectiveness of Bacillus subtilis (B. 
      subtilis) in self-healing cracks in concrete and enhancing concrete strength 
      through microbial induced calcium carbonate precipitation (MICP). The study 
      evaluated the ability of the mortar to cover cracks within 28 days, taking into 
      account the width of the crack, and observed the recovery of strength after 
      self-healing. The use of microencapsulated endospores of B. subtilis was also 
      examined for its impact on the strength of concrete. The compressive, splitting 
      tensile, and flexural strengths of normal mortar were compared to those of 
      biological mortar, and it was found that biological mortar had a higher strength 
      capacity. Microstructure analysis using SEM and EDS showed that bacterial growth 
      increased calcium production, contributing to the improved mechanical properties 
      of the bio-mortar.
CI  - (c) 2023. The Author(s).
FAU - Yamasamit, Nattapong
AU  - Yamasamit N
AD  - Department of Civil Engineering, Faculty of Engineering, Thammasat School of 
      Engineering, Thammasat University, Pathum Thani, Thailand.
FAU - Sangkeaw, Panisa
AU  - Sangkeaw P
AD  - Department of Civil Engineering, Faculty of Engineering, Thammasat School of 
      Engineering, Thammasat University, Pathum Thani, Thailand.
FAU - Jitchaijaroen, Wittaya
AU  - Jitchaijaroen W
AD  - Department of Civil Engineering, Faculty of Engineering, Thammasat School of 
      Engineering, Thammasat University, Pathum Thani, Thailand.
FAU - Thongchom, Chanachai
AU  - Thongchom C
AD  - Department of Civil Engineering, Faculty of Engineering, Thammasat School of 
      Engineering, Thammasat University, Pathum Thani, Thailand. 
      tchanach@engr.tu.ac.th.
FAU - Keawsawasvong, Suraparb
AU  - Keawsawasvong S
AD  - Department of Civil Engineering, Faculty of Engineering, Thammasat School of 
      Engineering, Thammasat University, Pathum Thani, Thailand.
FAU - Kamchoom, Viroon
AU  - Kamchoom V
AD  - Excellent Centre for Green and Sustainable Infrastructure, Department of Civil 
      Engineering, School of Engineering, King Mongkut's Institute of Technology 
      Ladkrabang (KMITL), Bangkok, Thailand.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20230515
PL  - England
TA  - Sci Rep
JT  - Scientific reports
JID - 101563288
RN  - H0G9379FGK (Calcium Carbonate)
SB  - IM
MH  - *Bacillus subtilis/chemistry
MH  - *Construction Materials/microbiology
MH  - Calcium Carbonate/chemistry
MH  - Spores, Bacterial
PMC - PMC10185526
COIS- The authors declare no competing interests.
EDAT- 2023/05/16 01:09
MHDA- 2023/05/17 06:42
PMCR- 2023/05/15
CRDT- 2023/05/15 23:17
PHST- 2023/02/27 00:00 [received]
PHST- 2023/05/09 00:00 [accepted]
PHST- 2023/05/17 06:42 [medline]
PHST- 2023/05/16 01:09 [pubmed]
PHST- 2023/05/15 23:17 [entrez]
PHST- 2023/05/15 00:00 [pmc-release]
AID - 10.1038/s41598-023-34837-x [pii]
AID - 34837 [pii]
AID - 10.1038/s41598-023-34837-x [doi]
PST - epublish
SO  - Sci Rep. 2023 May 15;13(1):7844. doi: 10.1038/s41598-023-34837-x.