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A review on utilization of pozzolanic materials in microbial concrete

Xuejiao Zhu (UGent) , Nele De Belie (UGent) and Varenyam Achal
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Abstract
Microbial calcite precipitation has been intensively studied recently for the improvement of compressive strength and durability of concrete, including those with pozzolanic materials such as metakaolin (MK), fly ash (FA), and silica fume (SF). Such materials possess high pozzolanic activity and have become an essential part of high strength and high performance concrete mix design. However, when replacing cement at high proportion, it has been found that such materials can cause a decrease of freeze-thaw resistance and early age strength of concrete. To remedy the defects, microbial calcite precipitation, a continuous extracellular cementation process dominated by bacteria, has been used to improve the engineering properties of such concrete. This article gives an overview of the biocementation process for the improvement of compressive strength and durability of concrete where cement was partially replaced with mk, fa, and sf. It has been found that properties like compressive strength, and durability of pozzolanic concrete can be improved with microbial calcite precipitation.
Keywords
pozzolanic macterials, bacteria, microbial concrete, durability

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MLA
Zhu, Xuejiao, et al. “A Review on Utilization of Pozzolanic Materials in Microbial Concrete.” Final Conference of RILEM TC 253-MCI : Microorganisms-Cementitious Materials Interactions, edited by Alexandra Bertron and Henk Jonkers, vol. 2, RILEM Publications, 2018, pp. 543–50.
APA
Zhu, X., De Belie, N., & Achal, V. (2018). A review on utilization of pozzolanic materials in microbial concrete. In A. Bertron & H. Jonkers (Eds.), Final Conference of RILEM TC 253-MCI : Microorganisms-Cementitious Materials Interactions (Vol. 2, pp. 543–550). Paris: RILEM Publications.
Chicago author-date
Zhu, Xuejiao, Nele De Belie, and Varenyam Achal. 2018. “A Review on Utilization of Pozzolanic Materials in Microbial Concrete.” In Final Conference of RILEM TC 253-MCI : Microorganisms-Cementitious Materials Interactions, edited by Alexandra Bertron and Henk Jonkers, 2:543–50. Paris: RILEM Publications.
Chicago author-date (all authors)
Zhu, Xuejiao, Nele De Belie, and Varenyam Achal. 2018. “A Review on Utilization of Pozzolanic Materials in Microbial Concrete.” In Final Conference of RILEM TC 253-MCI : Microorganisms-Cementitious Materials Interactions, ed by. Alexandra Bertron and Henk Jonkers, 2:543–550. Paris: RILEM Publications.
Vancouver
1.
Zhu X, De Belie N, Achal V. A review on utilization of pozzolanic materials in microbial concrete. In: Bertron A, Jonkers H, editors. Final Conference of RILEM TC 253-MCI : Microorganisms-Cementitious Materials Interactions. Paris: RILEM Publications; 2018. p. 543–50.
IEEE
[1]
X. Zhu, N. De Belie, and V. Achal, “A review on utilization of pozzolanic materials in microbial concrete,” in Final Conference of RILEM TC 253-MCI : Microorganisms-Cementitious Materials Interactions, Toulouse, 2018, vol. 2, pp. 543–550.
@inproceedings{8599131,
  abstract     = {{Microbial calcite precipitation has been intensively studied recently for the improvement of
compressive strength and durability of concrete, including those with pozzolanic materials such
as metakaolin (MK), fly ash (FA), and silica fume (SF). Such materials possess high pozzolanic
activity and have become an essential part of high strength and high performance concrete mix
design. However, when replacing cement at high proportion, it has been found that such
materials can cause a decrease of freeze-thaw resistance and early age strength of concrete. To
remedy the defects, microbial calcite precipitation, a continuous extracellular cementation
process dominated by bacteria, has been used to improve the engineering properties of such
concrete. This article gives an overview of the biocementation process for the improvement of
compressive strength and durability of concrete where cement was partially replaced with mk,
fa, and sf. It has been found that properties like compressive strength, and durability of
pozzolanic concrete can be improved with microbial calcite precipitation.}},
  author       = {{Zhu, Xuejiao and De Belie, Nele and Achal, Varenyam}},
  booktitle    = {{Final Conference of RILEM TC 253-MCI : Microorganisms-Cementitious Materials Interactions}},
  editor       = {{Bertron, Alexandra and Jonkers, Henk}},
  isbn         = {{9782351582077}},
  keywords     = {{pozzolanic macterials,bacteria,microbial concrete,durability}},
  language     = {{eng}},
  location     = {{Toulouse}},
  pages        = {{543--550}},
  publisher    = {{RILEM Publications}},
  title        = {{A review on utilization of pozzolanic materials in microbial concrete}},
  volume       = {{2}},
  year         = {{2018}},
}