Bio-reinforced self-healing concrete using magnetic iron oxide nanoparticles

被引：0
作者：
Mostafa Seifan
Ajit K. Sarmah
Alireza Ebrahiminezhad
Younes Ghasemi
Ali Khajeh Samani
Aydin Berenjian
机构：
[1] The University of Waikato,School of Engineering, Faculty of Science and Engineering
[2] The University of Auckland,Civil & Environmental Engineering Department, Faculty of Engineering
[3] Fasa University of Medical Sciences,Department of Medical Biotechnology, School of Medicine, and Non
[4] Shiraz University of Medical Sciences,communicable Diseases Research Centre
[5] Shiraz University of Medical Sciences,Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies
[6] Federation University Australia,Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences Research Centre
来源：
Applied Microbiology and Biotechnology | 2018年 / 102卷
关键词：
Bacteria; Concrete; Crack treatment; Immobilization; Iron oxide nanoparticle; Water absorption;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Immobilization has been reported as an efficient technique to address the bacterial vulnerability for application in bio self-healing concrete. In this study, for the first time, magnetic iron oxide nanoparticles (IONs) are being practically employed as the protective vehicle for bacteria to evaluate the self-healing performance in concrete environment. Magnetic IONs were successfully synthesized and characterized using different techniques. The scanning electron microscope (SEM) images show the efficient adsorption of nanoparticles to the Bacillus cells. Microscopic observation illustrates that the incorporation of the immobilized bacteria in the concrete matrix resulted in a significant crack healing behavior, while the control specimen had no healing characteristics. Analysis of bio-precipitates revealed that the induced minerals in the cracks were calcium carbonate. The effect of magnetic immobilized cells on the concrete water absorption showed that the concrete specimens supplemented with decorated bacteria with IONs had a higher resistance to water penetration. The initial and secondary water absorption rates in bio-concrete specimens were 26% and 22% lower than the control specimens. Due to the compatible behavior of IONs with the concrete compositions, the results of this study proved the potential application of IONs for developing a new generation of bio self-healing concrete.
引用
收藏
页码：2167 / 2178
页数：11
相关论文
共 102 条
[1]  
Babes L(1999)Synthesis of iron oxide nanoparticles used as MRI contrast agents: a parametric study J Colloid Interface Sci 212 474-482
[2]  
Bt D(2001)Calcite precipitation induced by polyurethane-immobilized Enzym Microb Technol 28 404-409
[3]  
Tanguy G(2000)Bacterial ureases in infectious diseases Microbes Infect 2 533-542
[4]  
Le Jeune JJ(1999)Ca-carbonates precipitation and limestone genesis - the microbiogeologist point of view Sediment Geol 126 9-23
[5]  
Jallet P(2012)Influence of bacteria on the compressive strength, water absorption and rapid chloride permeability of fly ash concrete Constr Build Mater 28 351-356
[6]  
Bang SS(2007)Material properties of Portland cement paste with nano-montmorillonite J Mater Sci 42 7478-7487
[7]  
Galinat JK(2016)Application of bacteria in concrete: a critical evaluation of the current status RILEM Technical Letters 1 56-61
[8]  
Ramakrishnan V(2000)Three designs for the internal release of sealants, adhesives, and waterproofing chemicals into concrete to reduce permeability Cem Concr Res 30 1969-1977
[9]  
Burne RA(2005)Synthesis and surface engineering of iron oxide nanoparticles for biomedical applications Biomaterials 26 3995-4021
[10]  
Chen YYM(2002)Key roles of pH and calcium metabolism in microbial carbonate precipitation Rev Environ Sci Biotechnol 1 3-7
12345678910