Interactions of fungi with concrete: Significant importance for bio-based self-healing concrete

被引：109

作者：

Luo, Jing ^{[1
]}

Chen, Xiaobo ^{[2
]}

Crump, Jada ^{[3
]}

Zhou, Hui ^{[2
]}

Davies, David G. ^{[4
]}

Zhou, Guangwen ^{[2
,3
]}

Zhang, Ning ^{[1
,5
]}

Jin, Congrui ^{[2
,3
]}

机构：

[1] Rutgers State Univ, Dept Plant Biol, New Brunswick, NJ 08901 USA

[2] SUNY Binghamton, Mat Sci & Engn Program, Binghamton, NY 13902 USA

[3] SUNY Binghamton, Dept Engn Mech, Binghamton, NY 13902 USA

[4] SUNY Binghamton, Dept Sci Biol, Binghamton, NY 13902 USA

[5] Rutgers State Univ, Dept Biochem & Microbiol, New Brunswick, NJ 08901 USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 164卷

关键词：

Concrete; Fungi; Self-healing; CALCIUM-OXALATE; CARBONATE PRECIPITATION; HEAVY-METALS; BIOMINERALIZATION; BACTERIA; CACO3; SOLUBILIZATION; PERMEABILITY; LIMESTONE; FILAMENTS;

D O I：

10.1016/j.conbuildmat.2017.12.233

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The goal of this study is to explore a new self-healing concept in which fungi are used as a self-healing agent to promote calcium mineral precipitation to fill the cracks in concrete. An initial screening of different species of fungi has been conducted. Fungal growth medium was overlaid onto cured concrete plate. Mycelial discs were aseptically deposited at the plate center. The results showed that, due to the dissolving of Ca(OH)(2) from concrete, the pH of the growth medium increased from its original value of 6.5 to 13.0. Despite the drastic pH increase, Trichoderma reesei (ATCC13631) spores germinated into hyphal mycelium and grew equally well with or without concrete. X-ray diffraction (XRD) and scanning electron microscope (SEM) confirmed that the crystals precipitated on the fungal hyphae were composed of calcite. These results indicate that T. reesei has great potential to be used in bio-based self-healing concrete for sustainable infrastructure. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：275 / 285

页数：11

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