PMID- 36792676
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230216
LR  - 20230218
IS  - 2045-2322 (Electronic)
IS  - 2045-2322 (Linking)
VI  - 13
IP  - 1
DP  - 2023 Feb 15
TI  - Effects of Al(2)O(3), SiO(2) nanoparticles, and g-C(3)N(4) nanosheets on 
      biocement production from agricultural wastes.
PG  - 2720
LID - 10.1038/s41598-023-29180-0 [doi]
LID - 2720
AB  - Environmental issues are brought up concerning the production of Portland cement. 
      As a result, biocement serves as a reliable substitute for Portland cement in 
      green construction projects. This study created a brand-new technique to create 
      high-quality biocement from agricultural wastes. The technique is based on 
      nanomaterials that improve and accelerate the "Microbially Induced Calcite 
      Precipitation (MICP)" process, which improves the quality of the biocement 
      produced. The mixture was further mixed with the addition of 5 mg/l of graphitic 
      carbon nitride nanosheets (g-C(3)N(4) NSs), alumina nanoparticles (Al(2)O(3) 
      NPs), or silica nanoparticles (SiO(2) NPs). The cement: sand ratio was 1:3, the 
      ash: cement ratio was 1:9, and water: cement ratio was 1:2. Cubes molds were 
      prepared, and then cast and compacted. Subsequent de-molding, all specimens were 
      cured in nutrient broth-urea (NBU) media until testing at 28 days. The medium was 
      replenished at an interval of 7 days. The results show that the addition of 
      5 mg/l of g-C(3)N(4) NSs with corncob ash delivered the highest "Compressive 
      Strength" and the highest "Flexural Strength" of biocement mortar cubes of 18 and 
      7.6 megapascal (MPa), respectively; and an acceptable "Water Absorption" (5.42%) 
      compared to all other treatments. This treatment delivered a "Compressive 
      Strength", "Flexural Strength", and "Water Absorption" reduction of 1.67, 1.26, 
      and 1.21 times the control (standard Portland cement). It was concluded that 
      adding 5 mg/l of g-C(3)N(4) NSs to the cementitious mixture enhances its 
      properties, where the resulting biocement is a promising substitute for 
      conventional Portland cement. Adding nanomaterials to cement reduces its 
      permeability to ions, increasing its strength and durability. The use of these 
      nanomaterials can enhance the performance of concrete infrastructures. The use of 
      nanoparticles is an effective solution to reduce the environmental impact 
      associated with concrete production.
CI  - (c) 2023. The Author(s).
FAU - Abdelsalam, Essam M
AU  - Abdelsalam EM
AD  - Department of ​Laser Applications in Metrology, Photochemistry and Agriculture 
      (LAMPA), National Institute of Laser Enhanced Sciences (NILES), Cairo University, 
      Giza, Egypt. abdelsalam@niles.cu.edu.eg.
FAU - Samer, Mohamed
AU  - Samer M
AD  - Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, 
      Giza, Egypt. msamer@agr.cu.edu.eg.
FAU - Seifelnasr, Amira
AU  - Seifelnasr A
AD  - Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, 
      Giza, Egypt.
FAU - Moselhy, Mohamed A
AU  - Moselhy MA
AD  - Department of Microbiology, Faculty of Agriculture, Cairo University, Giza, 
      Egypt.
FAU - Ibrahim, Hatem H A
AU  - Ibrahim HHA
AD  - Department of Structural Engineering, Faculty of Engineering, Cairo University, 
      Giza, Egypt.
FAU - Faried, Maryam
AU  - Faried M
AD  - Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, 
      Giza, Egypt.
FAU - Attia, Yasser A
AU  - Attia YA
AD  - Department of ​Laser Applications in Metrology, Photochemistry and Agriculture 
      (LAMPA), National Institute of Laser Enhanced Sciences (NILES), Cairo University, 
      Giza, Egypt. yasserniles@niles.cu.edu.eg.
LA  - eng
PT  - Journal Article
DEP - 20230215
PL  - England
TA  - Sci Rep
JT  - Scientific reports
JID - 101563288
SB  - IM
PMC - PMC9932060
COIS- The authors declare no competing interests.
EDAT- 2023/02/16 06:00
MHDA- 2023/02/16 06:01
PMCR- 2023/02/15
CRDT- 2023/02/15 23:19
PHST- 2022/11/09 00:00 [received]
PHST- 2023/01/31 00:00 [accepted]
PHST- 2023/02/15 23:19 [entrez]
PHST- 2023/02/16 06:00 [pubmed]
PHST- 2023/02/16 06:01 [medline]
PHST- 2023/02/15 00:00 [pmc-release]
AID - 10.1038/s41598-023-29180-0 [pii]
AID - 29180 [pii]
AID - 10.1038/s41598-023-29180-0 [doi]
PST - epublish
SO  - Sci Rep. 2023 Feb 15;13(1):2720. doi: 10.1038/s41598-023-29180-0.