Growing concerns about sustainability have escalated the importance of biocementation techniques for strengthening and protecting construction materials. The biocementation process has several advantages over conventional strength improvement techniques for cementitious materials. However, growth and maintenance of biocementing bacteria may be the cost-increasing factor. Thus, exploration of different ways to fulfil the nutritional requirements of ureolytic bacteria for biocementation has accelerated in recent years. Many researchers have come up with different natural nutrients to grow ureolytic bacteria and to impart economy to the entire biocementation process. The present study proposes the use of mixed cultures of bacteria from rhizospheric soil, grown in a medium containing all natural ingredients for the process of biocementation, thus making the process quite inexpensive. The effect of the mixed cultures of bacteria grown in a natural ingredient medium on the strength and durability aspects of cement concrete was monitored and compared with the effect of isolated species of ureolytic bacteria grown in a conventional medium.

中文翻译：

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使用天然生长成分促进细菌生长的生物水泥研究

对可持续性的日益关注已经升级了生物水泥技术在加强和保护建筑材料方面的重要性。与用于胶结材料的传统强度改进技术相比，生物水泥工艺有几个优点。然而，生物水泥细菌的生长和维持可能是成本增加的因素。因此，近年来加速探索满足尿素分解细菌对生物水泥的营养需求的不同方法。许多研究人员提出了不同的天然营养素来培养尿素分解细菌，并为整个生物水泥过程提供经济性。本研究建议使用来自根际土壤的细菌混合培养物，在含有所有天然成分的培养基中生长，用于生物胶结过程，从而使该过程相当便宜。监测了在天然成分培养基中生长的细菌混合培养物对水泥混凝土强度和耐久性方面的影响，并与在常规培养基中生长的分离的尿素分解菌种的影响进行了比较。