Author(s): Fukue M; Lechowicz Z; Mulligan CN; Takeuchi S; Takeuchi H;

As a response to aging of cultured urease-producing microorganisms, the blending method was examined to obtain the required carbonate production amount using the apparent viability (Rcv) based on previous research. As a result, a significantly higher carbonate content than the amount of CaCl2 2H2O used was produced. Since this trend has been obtained in p ...

Article GUID: 41900613

Author(s): Fukue M; Lechowicz Z; Mulligan CN; Takeuchi S; Fujimori Y; Emori K;

Research on MICP technology for ground improvement began in the early 2000s, and since then, it has been considered as innovative research. The field of applications is showing signs of expanding from sandy soil stabilization to remediation. However, the research has not always progressed, because it is extremely difficult to evaluate the ability (viabili ...

Article GUID: 40004331

Author(s): Fukue M; Lechowicz Z; Fujimori Y; Emori K; Mulligan CN;

The estimation of optical density (OD) with viable cells is challenging for engineering purposes. In this study, the OD conversion based on previous study was used. The inhibited and retarded behavior of the microbially induced carbonate precipitation (MICP) process was examined. The experimental results showed that high Ca2+ drastically influences the in ...

Article GUID: 37176240

Author(s): Fukue M; Lechowicz Z; Fujimori Y; Emori K; Mulligan CN;

The engineering practices for applying the microbial precipitation of carbonates require a design of the blending biocement solution (BCS). The BCS is usually blended with concentrated strains NO-A10, reaction media, such as urea and CaCl2, and a solvent, i.e., water or seawater. To characterize the BCS, the unknown microbial characteristics, such as the ...

Article GUID: 35269187