Microbially induced carbonate precipitation (MICP) has been actively investigated as a promising method to improve soil properties. A burning issue impeding its wide application is the severe spatial inhomogeneity of the CaCO₃ distribution. Inspiring by the temperature sensitivity of the bacteria activity, a temperature-controlled one-phase MICP method is proposed consisting of two major steps: (1) grouting the specimen with the mixture of cementation and bacteria solutions in a low temperature; (2) inducing CaCO₃ precipitation by exposing the specimen to room temperature. A series of experiments are conducted to demonstrate the advantages of the proposed method over the normal two-phase MICP method. Specimens treated with the proposed temperature-controlled method present higher CaCO₃ contents with a roughly uniform distribution along the height of the specimen; the strength of those specimens are substantially improved with apparent dilatancy due to the effective bond network formed by the homogeneously distributed CaCO₃ precipitation. SEM images indicate that the temperature-controlled method tends to form small crystals distributing uniformly on the grain surface, which may increase the roughness of the grain and the residual stress more effectively.

微生物诱导的碳酸盐沉淀（MICP）已被积极研究作为改善土壤性质的一种有前途的方法。阻碍其广泛应用的一个迫切问题是CaCO ₃分布的严重空间不均匀性。出于对细菌活性的温度敏感性的启发，提出了一种温度控制的单相MICP方法，该方法包括两个主要步骤：（1）在低温下用胶结剂和细菌溶液的混合物对标本进行灌浆；（2）通过将样品置于室温下诱导CaCO ₃沉淀。进行了一系列实验，以证明该方法相对于常规两相MICP方法的优势。用建议的温度控制方法处理的样品呈现较高的CaCO_3个内含物沿试样高度大致均匀分布；由于均匀分布的CaCO ₃沉淀形成有效的键合网络，这些样品的强度有了明显的扩张，并得到了显着改善。SEM图像表明，温度控制方法趋于形成均匀分布在晶粒表面的小晶体，这可能会更有效地增加晶粒的粗糙度和残余应力。