珍珠岩
水泥
材料科学
粘液
偏高岭土
涂层
复合材料
方解石
基质(水族馆)
矿物三氧化物骨料
芯(光纤)
硅酸钙
化学工程
化学
矿物学
牙科
植物
地质学
工程类
海洋学
生物
医学
作者
Han Meng,Xiaojun Lü,Shahid Hussain,Asma Shaheen,Guiwu Liu
出处
期刊:Journal of Nanoelectronics and Optoelectronics
[American Scientific Publishers]
日期:2021-11-01
卷期号:16 (11): 1828-1833
被引量:5
标识
DOI:10.1166/jno.2021.3130
摘要
To improve the weather resistance of Bacillus mucilaginous L3 in cement-based materials, we used the expanded perlite as an immobilization carrier of B. mucilaginous L3, and prepared core–shell-structured microcapsules using a metakaolin-sodium silicate mixed solution as the coating shell. Such immobilization by microcapsules can ensure the high weather resistance of B. mucilaginous L3 in cement-based materials, and was characterized by relevant methods. The cement-based materials containing self-healing microcapsules demonstrated high weather resistance, and can heal the largest cracks width of 0.85 mm. The expanded perlite offered the microbes with attachment sites and a survival and protection space. The self-healing grains coated with high-activity metakaolin can contact well with the substrate in the concrete, which showed excellent integrity. The minerals separated out by the self-healing microbes were high-purity calcite-like calcium carbonate and exhibited high healing ability.
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