Effects of spray-dried co-cultured bacteria on cement mortar

Indong Jang; Dasom Son; Wonjae Kim; Woojun Park; Chongku Yi

doi:10.1016/j.conbuildmat.2020.118206

Effects of spray-dried co-cultured bacteria on cement mortar

Indong Jang, Dasom Son, Wonjae Kim, Woojun Park, Chongku Yi

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Co-cultured bacterial spores from alkaliphilic and alkali-tolerant strains exhibit superior performance compared with those from single strains because of their higher resistance to pH and harsh environments, which promotes biofilm formation and CaCO₃ precipitation. In this study, spray-dried co-cultured bacteria spores have been incorporated into cement mortar to explore their effects on its self-healing, mechanical properties, and durability. They showed high survival, decreased mortar sorptivity, and well-crystalline CaCO₃ formation; on the other hand, the 28-day compressive strength of the mortar was severely reduced, and the water porosity raised.

Original language	English
Article number	118206
Journal	Construction and Building Materials
Volume	243
DOIs	https://doi.org/10.1016/j.conbuildmat.2020.118206
Publication status	Published - 2020 May 20

Keywords

Bacteria
Co-cultured bacteria
Concrete
Self-healing
Spray-dried bacteria

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Materials Science(all)

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title = "Effects of spray-dried co-cultured bacteria on cement mortar",

abstract = "Co-cultured bacterial spores from alkaliphilic and alkali-tolerant strains exhibit superior performance compared with those from single strains because of their higher resistance to pH and harsh environments, which promotes biofilm formation and CaCO3 precipitation. In this study, spray-dried co-cultured bacteria spores have been incorporated into cement mortar to explore their effects on its self-healing, mechanical properties, and durability. They showed high survival, decreased mortar sorptivity, and well-crystalline CaCO3 formation; on the other hand, the 28-day compressive strength of the mortar was severely reduced, and the water porosity raised.",

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author = "Indong Jang and Dasom Son and Wonjae Kim and Woojun Park and Chongku Yi",

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T1 - Effects of spray-dried co-cultured bacteria on cement mortar

AU - Jang, Indong

AU - Son, Dasom

AU - Kim, Wonjae

AU - Park, Woojun

AU - Yi, Chongku

PY - 2020/5/20

Y1 - 2020/5/20

N2 - Co-cultured bacterial spores from alkaliphilic and alkali-tolerant strains exhibit superior performance compared with those from single strains because of their higher resistance to pH and harsh environments, which promotes biofilm formation and CaCO3 precipitation. In this study, spray-dried co-cultured bacteria spores have been incorporated into cement mortar to explore their effects on its self-healing, mechanical properties, and durability. They showed high survival, decreased mortar sorptivity, and well-crystalline CaCO3 formation; on the other hand, the 28-day compressive strength of the mortar was severely reduced, and the water porosity raised.

AB - Co-cultured bacterial spores from alkaliphilic and alkali-tolerant strains exhibit superior performance compared with those from single strains because of their higher resistance to pH and harsh environments, which promotes biofilm formation and CaCO3 precipitation. In this study, spray-dried co-cultured bacteria spores have been incorporated into cement mortar to explore their effects on its self-healing, mechanical properties, and durability. They showed high survival, decreased mortar sorptivity, and well-crystalline CaCO3 formation; on the other hand, the 28-day compressive strength of the mortar was severely reduced, and the water porosity raised.

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KW - Concrete

KW - Self-healing

KW - Spray-dried bacteria

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