Application of a Microbial Immobilization Technique in Remediation of Concrete Cracks

9802127 Bang一种新的方法已经在研究中被引导来克服混凝土修复中的困难，集中在混凝土裂缝的微生物修复的几个增强特性上;含有微生物的填充材料的高保留性，渗透性的降低，以及裂缝填充物和混凝土之间的高结合强度，其可以承受环境变化。 具体而言，本研究采用固定化技术修复混凝土裂缝，其中微生物细胞封装在聚合物中诱导碳酸钙沉淀以填充差距并增强强度以进行选择性胶结。 计划在固定化细胞系统中进行广泛的动力学研究，以了解方解石沉淀与填充材料和混凝土之间的化学键合的关系。 动力学研究的结果将使用数学模型按比例放大，并直接纳入现场应用。

9802127 Bang A new approach has been directed in the research to overcome the difficulties in concrete remediation, focusing on several reinforcement properties of microbial remediation of cracks in concrete; high retention of filling materials containing microorganisms, reduction of permeability, and high bonding strength between crack filling and concrete which can sustain environmental changes. In detail, the research is to employ an immobilization technique for remediation of cracks in concrete, where microbial cells encapsulated in polymers induce calcium carbonate precipitation to fill up the gap and enhance the strength for selective cementation. Extensive kinetic studies in the immobolized cell system are planned to understand the relationship of calcite precipitation to the chemical bonding between filling materials and concrete. Results from the kinetic studies will then be scaled up using mathematical models and directly incorporated into field application.