Microbial carbonate precipitation in construction materials: A review
Microbial carbonate precipitation in construction materials: A review
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DOI：
10.1016/j.ecoleng.2009.02.006
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发表时间：
2010-02-01
影响因子：
3.8
通讯作者：
Verstraete, Willy
中科院分区：
文献类型：
--
作者：
De Muynck, Willem;De Belie, Nele;Verstraete, Willy
微生物参与碳酸盐沉淀的证据导致了在建筑材料领域对这一过程的探索。最早的专利申请之一涉及通过微生物沉积的碳酸盐层（即生物沉积）来保护装饰石。这项技术的前景鼓励不同的研究小组评估替代方法，每个小组都对原始专利进行评论，并将其细菌菌株或方法推广为最佳表现。本综述的目的是对这些不同的方法进行深入比较。特别注意的研究背景，可以解释的微生物的选择和代谢途径提出。此外，通过对各种方法的评价，可以清楚地解释在有效性方面观察到的差异。此外，建议，以提高原位的生物沉积方法的可行性假设。在本文的第二部分，使用微生物诱导的碳酸盐作为粘结剂材料，即生物胶结，进行了讨论。细菌已被添加到混凝土中，以提高抗压强度和修复裂缝。目前的研究正在评估细菌作为自愈剂的潜力，用于裂缝形成后混凝土渗透性的自主降低。(C)2009 Elsevier B.V.保留所有权利。
Evidence of microbial involvement in carbonate precipitation has led to the exploration of this process in the field of construction materials. One of the first patented applications concerned the protection of ornamental stone by means of a microbially deposited carbonate layer, i.e. biodeposition. The promising results of this technique encouraged different research groups to evaluate alternative approaches, each group commenting on the original patent and promoting its bacterial strain or method as the best performing. The goal of this review is to provide an in-depth comparison of these different approaches. Special attention was paid to the research background that could account for the choice of the microorganism and the metabolic pathway proposed. In addition, evaluation of the various methodologies allowed for a clear interpretation of the differences observed in effectiveness. Furthermore, recommendations to improve the in situ feasibility of the biodeposition method are postulated. In the second part of this paper, the use of microbially induced carbonates as a binder material, i.e. biocementation, is discussed. Bacteria have been added to concrete for the improvement of compressive strength and the remediation of cracks. Current studies are evaluating the potential of bacteria as self-healing agents for the autonomous decrease of permeability of concrete upon crack formation. (C) 2009 Elsevier B.V. All rights reserved.