应用于自愈合混凝土的真菌筛选

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摘要翻译：
由于混凝土的干燥收缩、冻融循环、钙矾石的延迟生成、钢筋锈蚀、徐变和疲劳等原因，混凝土容易开裂。由于混凝土基础设施的维护和检查需要繁重的劳动力和高昂的成本，在没有人为干预或干预的情况下，有害裂缝的自愈合可能是非常有吸引力的。本研究的目的是探索一种新的自修复方法，利用真菌作为自修复剂，促进碳酸钙沉淀，以填补混凝土结构的裂缝。近年来在土工真菌领域的研究表明，许多真菌在促进碳酸钙矿化方面起着重要作用，但在自愈合混凝土中的应用尚未见报道。因此，本研究对不同种类的真菌进行了筛选。结果表明，尽管混凝土中氢氧化钙的浸出导致pH值急剧升高，但pH调节突变体nidulans Aspergillus(MAD1445)仍能在混凝土板上生长，促进碳酸钙沉淀。
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英文标题：
《Screening of Fungi for the Application of Self-Healing Concrete》
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作者：
Rakenth R. Menon, Jing Luo, Xiaobo Chen, Hui Zhou, Zhiyong Liu,
  Guangwen Zhou, Ning Zhang, Congrui Jin
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最新提交年份：
2018
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分类信息：

一级分类：Quantitative Biology        数量生物学
二级分类：Other Quantitative Biology        其他定量生物学
分类描述：Work in quantitative biology that does not fit into the other q-bio classifications
不适合其他q-bio分类的定量生物学工作
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一级分类：Physics        物理学
二级分类：Applied Physics        应用物理学
分类描述：Applications of physics to new technology, including electronic devices, optics, photonics, microwaves, spintronics, advanced materials, metamaterials, nanotechnology, and energy sciences.
物理学在新技术中的应用，包括电子器件、光学、光子学、微波、自旋电子学、先进材料、超材料、纳米技术和能源科学。
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英文摘要：
  Concrete is susceptible to cracking owing to drying shrinkage, freeze-thaw cycles, delayed ettringite formation, reinforcement corrosion, creep and fatigue, etc. Since maintenance and inspection of concrete infrastructure require onerous labor and high costs, self-healing of harmful cracks without human interference or intervention could be of great attraction. The goal of this study is to explore a new self-healing approach in which fungi are used as a self-healing agent to promote calcium carbonate precipitation to fill the cracks in concrete structures. Recent research results in the field of geomycology have shown that many species of fungi could play an important role in promoting calcium carbonate mineralization, but their application in self-healing concrete has not been reported. Therefore, a screening of different species of fungi has been conducted in this study. Our results showed that, despite the drastic pH increase owing to the leaching of calcium hydroxide from concrete, Aspergillus nidulans (MAD1445), a pH regulatory mutant, could grow on concrete plates and promote calcium carbonate precipitation.
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PDF链接：
https://arxiv.org/pdf/1711.10386

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关键词：混凝土 Quantitative Applications intervention QUANTITATIV 裂缝 生成 真菌 study 研究