通过地质聚合物砂中的尿溶性和非尿溶性细菌菌株对石形成潜力的实验验证

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Bashar Al Hayo¹, Orhan Canpolat¹, Nihal Doğruöz Güngör²

¹Department of Civil Engineering, Faculty of Civil Engineering, Yildiz Technical University, İstanbul 34220, Türkiye.

Materials (Basel, Switzerland)

|October 29, 2025

概括

非尿溶性细菌Viridibacillus arenosi和Bacillus zhangzhouensis显著增强了地质聚合物砂中的石沉和裂愈合. 这些细菌为改善材料性能提供了比尿解菌株更可持续的替代品.

科学领域:

地质聚合物化学和材料科学.
微生物学和生物矿物化.
可持续的建筑材料.

背景情况:

地质聚合物混凝土为传统的波特兰水泥混凝土提供了一个可持续的替代方案.
裂是混凝土结构中常见的耐久性问题.
细菌诱导的石沉是一种有前途的自我愈合技术.

研究的目的:

评估地质聚合物砂中非尿溶性细菌菌株 (Viridibacillus arenosi A6和Bacillus zhangzhouensis D25) 的石沉潜力.
为了比较非尿溶性细菌与尿溶性菌株 (Sporosarcina pasteurii SP) 的自我愈合效率.
评估细菌处理对地质聚合物砂物理和微观结构性质的影响.

主要方法:

在地质聚合物砂样本中注射细菌悬浮剂.
使用ImageJ软件评估裂愈合效率.
测量超声波脉冲速度 (UPV) 和水的透性.
对毛细血管水吸收,SEM/EDS和XRD的分析.

主要成果:

非尿解菌株D25和A6的治愈效率分别为96.9%和91.9%,超过了尿解菌株SP (77.8%).
细菌处理显著降低了水的透性,A6显示97.3%的减少,表明有效的裂密封.
SEM/EDS和XRD分析证实细菌处理的样本中存在广泛的石晶体形成和沉积,而对照样本中则没有.

结论:

非尿溶性细菌有效地促进地质聚合物砂中的石沉.
细菌诱导的石沉为地聚合物混凝土提供了更好的裂愈合和更好的耐用性.
非尿溶性细菌代表了一个可持续和高效的替代品,以尿溶性细菌的自我愈合混凝土应用.

关键词:

在MICP中,MICP是MICP.愈合效率的效率可以提高.一个注射的注射.具有自我愈合的能力.水的透性是水的透性

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